Abrégé

A downhole system has a plurality of telemetry systems and a control system configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system and how the information is to be transmitted on the given telemetry system.

Classes IPC  ?

• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/14 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques
• H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie
• E21B 7/04 - Forage dirigé
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

Methods and apparatus for identifying downhole dynamics in a drilling system are provided. Acceleration-detecting sensors are mounted at multiple locations near to a drill bit, such as at a drill collar. The sensors may be spaced 90° apart along a circumference of the drill collar. The sensors detect acceleration measurements in a plane orthogonal to the drill string's axis of rotation, with respect to a first reference frame that moves with the drill string. The acceleration measurements are received by a processor and processed to determine rotational and revolution positions of the drill string within the wellbore with respect to a static reference frame. Whirl dynamics may, in particular, be determined based on the results in real time.

Classes IPC  ?

• E21B 21/08 - Commande ou surveillance de la pression ou de l'écoulement du fluide de forage, p. ex. remplissage automatique des trous de forage, commande automatique de la pression au fond
• E21B 7/04 - Forage dirigé
• E21B 44/04 - Commande automatique de l'avance de l'outil en réponse au couple fourni par le moyen d'entraînement
• E21B 47/007 - Mesure des contraintes dans le cuvelage ou la tige de forage
• E21B 47/024 - Détermination de l'inclinaison ou de la direction des dispositifs dans le trou de forage
• G01P 15/18 - Mesure de l'accélérationMesure de la décélérationMesure des chocs, c.-à-d. d'une variation brusque de l'accélération dans plusieurs dimensions

Abrégé

A downhole system has a plurality of telemetry systems and a control system configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system and how the information is to be transmitted on the given telemetry system.

Classes IPC  ?

• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/14 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques
• H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie
• E21B 7/04 - Forage dirigé
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

A gap sub assembly for electromagnetic telemetry used in downhole drilling. The gap sub comprises a female part comprising a female mating section and a male part comprising a male mating section. The male mating section is matingly received within the female mating section and electrically isolated therefrom. One or more electrically insulating bodies secure the male part axially and torsionally relative to the female part. The electrically insulating bodies also electrically isolate the male part from the female part. The electrically insulating bodies can be installed through apertures in the female part or at least some of the electrically insulating bodies can be installed before the male mating section is inserted into the female mating section. The electrically insulating bodies can be held in place on the male mating section using a retention apparatus such as a ring, a scarf, pods or an adhesive.

Classes IPC  ?

• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• H01B 3/12 - Isolateurs ou corps isolants caractérisés par le matériau isolantEmploi de matériaux spécifiés pour leurs propriétés isolantes ou diélectriques composés principalement de substances inorganiques céramiques
• F16L 25/01 - Structure ou détails de raccords de tuyaux non prévus dans les groupes ou présentant in intérêt autre que celui visé par ces groupes spécialement adaptés pour réaliser une conduction électrique entre les deux extrémités raccordées des tuyaux ou entre leurs éléments
• E21B 17/02 - AccouplementsJoints
• E21B 17/042 - AccouplementsJoints entre tige et trépan, ou entre tiges filetés

Abrégé

Methods and apparatus for identifying downhole dynamics in a drilling system are provided. Acceleration-detecting sensors are mounted at multiple locations near to a drill bit, such as at a drill collar. The sensors may be spaced 90° apart along a circumference of the drill collar. The sensors detect acceleration measurements in a plane orthogonal to the drill string's axis of rotation, with respect to a first reference frame that moves with the drill string. The acceleration measurements are received by a processor and processed to determine rotational and revolution positions of the drill string within the wellbore with respect to a static reference frame. Whirl dynamics may, in particular, be determined based on the results in real time.

Classes IPC  ?

• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• E21B 47/007 - Mesure des contraintes dans le cuvelage ou la tige de forage
• E21B 44/04 - Commande automatique de l'avance de l'outil en réponse au couple fourni par le moyen d'entraînement
• E21B 47/024 - Détermination de l'inclinaison ou de la direction des dispositifs dans le trou de forage
• G01P 15/18 - Mesure de l'accélérationMesure de la décélérationMesure des chocs, c.-à-d. d'une variation brusque de l'accélération dans plusieurs dimensions
• E21B 7/04 - Forage dirigé
• E21B 21/08 - Commande ou surveillance de la pression ou de l'écoulement du fluide de forage, p. ex. remplissage automatique des trous de forage, commande automatique de la pression au fond

Abrégé

A fluid pressure pulse generator apparatus for a telemetry tool comprising a stator and a rotor. The stator comprises a stator body and a plurality of radially extending stator projections spaced around the stator body and the spaced stator projections define stator flow channels extending therebetween. The rotor comprises a rotor body and a plurality of radially extending rotor projections spaced around the rotor body. The rotor projections are axially adjacent the stator projections and the rotor is rotatable relative to the stator such that the rotor projections move in and out of fluid communication with the stator flow channels to create fluid pressure pulses in fluid flowing through the stator flow channels. At least one of the rotor projections and at least one of the stator projections has a standard outer diameter. At least one of the rotor projections and/or at least one of the stator projections has a reduced outer diameter. The reduced outer diameter rotor and/or stator projections provide bypass channels for flow of fluid and allow for generation of a pattern of different fluid pressure pulses.

Classes IPC  ?

• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits
• E21B 4/02 - Moyens d'entraînement de type rotatif par fluide
• E21B 47/06 - Mesure de la température ou de la pression

Abrégé

An active downhole antenna located in a borehole receives electromagnetic (EM) telemetry transmissions from sources in adjacent boreholes. The antenna comprises a processor operable do decode and measure signal to noise ratio of received transmissions. Data received at the active antenna is transmitted to surface using a high-speed data communication network. The active antenna may handle data communications from multiple downhole EM telemetry transmitters.

Classes IPC  ?

• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio
• H04B 13/02 - Systèmes de transmission dans lesquels le milieu de propagation est constitué par la terre ou une grande masse d'eau la recouvrant, p. ex. télégraphie par le sol
• H04B 17/309 - Mesure ou estimation des paramètres de qualité d’un canal
• E21B 47/14 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques
• G01S 5/02 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques
• G01S 11/06 - Systèmes pour déterminer la distance ou la vitesse sans utiliser la réflexion ou la reradiation utilisant les ondes radioélectriques utilisant des mesures d'intensité
• H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue

Abrégé

A downhole probe of a drilling rig has a probe sleeve for protecting the downhole probe. The probe sleeve may be made of a metal or a polymer such as polyphenylene sulfide. The probe sleeve may be heat-shrinkable to provide a tight fit between the downhole probe and the probe sleeve. The probe sleeve may include one or more protrusions shaped to engage a centralizer surrounding at least part of the downhole probe. The one or more protrusions may be arranged to prevent rotation of the centralizer relative to the probe sleeve. The probe sleeve may be made using a modified extrusion process and may include reinforcement to add strength to weld-lines along the length of the probe sleeve. The protrusions may also be used as reinforcement.

Classes IPC  ?

• B29C 48/09 - Objets dont la section transversale comporte des cavités partiellement ou entièrement fermées, p. ex. tuyaux ou canaux
• B29C 48/88 - Traitement thermique de l’écoulement de matière extrudée, p. ex. refroidissement
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• E21B 17/10 - Protecteurs contre l'usureDispositifs de centrage
• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio
• B29C 61/02 - Rétrécissement thermique
• B29C 48/32 - Filières ou matrices d’extrusion avec une ouverture annulaire, p. ex. pour former des objets tubulaires
• B29C 48/00 - Moulage par extrusion, c.-à-d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désiréeAppareils à cet effet

Abrégé

One or more seals may be provided in a gap sub to prevent the ingress of drilling fluid into an insulating gap between a male member of the gap sub and a female member of the gap sub. A first seal may comprise an internal gap sub seal provided near the tip of the male member of the gap sub. A second seal may comprise an external gap sub seal provided near the tip of the female member of the gap sub. The first and second seals may comprise non-conductive materials. The first and second seals may each comprise one or more O-rings. The first and second seals may comprise one or more lips, protrusions or flanges to engage the male and/or female members of the gap sub for maintaining contact with the male and/or female members during deformation of the gap sub.

Classes IPC  ?

• F16L 25/02 - Structure ou détails de raccords de tuyaux non prévus dans les groupes ou présentant in intérêt autre que celui visé par ces groupes spécialement adaptés pour isoler électriquement l'une de l'autre les extrémités raccordées des tuyaux
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• E21B 17/04 - AccouplementsJoints entre tige et trépan, ou entre tiges
• F16L 13/10 - Raccords collés ou cimentés
• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio

Abrégé

A downhole system has a plurality of telemetry systems and a control system configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system and how the information is to be transmitted on the given telemetry system.

Classes IPC  ?

• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/14 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques
• H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie
• E21B 7/04 - Forage dirigé
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

An assembly for receiving telemetry signals from downhole equipment is located at a top end of a drill string above a drill rig floor. The assembly may be configured to receive multiple types of telemetry signals, for example, two or more of electromagnetic telemetry, mud pulse telemetry and drill string acoustic telemetry signals. The assembly may comprise a cap comprising a coupling and an end separated by an electrically-insulating gap region. The end of the cap may be connected to a grounding system for the drill rig.

Classes IPC  ?

• G01V 3/00 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• H04L 29/08 - Procédure de commande de la transmission, p.ex. procédure de commande du niveau de la liaison
• H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou pour obtenir des valeurs mesurées
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• E21B 17/02 - AccouplementsJoints
• E21B 33/06 - Obturateurs anti-éruption
• E21B 47/06 - Mesure de la température ou de la pression
• E21B 3/02 - Moyens d'entraînement de surface pour forage par rotation

Abrégé

A downhole system has a plurality of telemetry systems and a control system configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system and how the information is to be transmitted on the given telemetry system.

Classes IPC  ?

• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/14 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques
• H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie
• E21B 7/04 - Forage dirigé
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

An assembly for use in subsurface drilling includes a downhole probe supported by a centralizer. The centralizer comprises a tubular member that extends around the downhole probe. A wall of the centralizer is fluted to provide inward contact points that support the downhole probe and outward contact points that bear against a bore wall of a section of drill string. The downhole probe may be supported for substantially its entire length.

Classes IPC  ?

• E21B 17/10 - Protecteurs contre l'usureDispositifs de centrage
• E21B 17/16 - Masses-tiges
• E21B 23/01 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour ancrer les outils ou similaires
• E21B 23/02 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour verrouiller les outils ou autres éléments sur des supports ou dans des retraits entre sections adjacentes du tubage
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
• E21B 7/00 - Procédés ou matériels particuliers pour le forage
• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio
• E21B 47/017 - Protection des instruments de mesure
• E21B 47/107 - Localisation des fuites, intrusions ou mouvements du fluide utilisant des moyens acoustiques
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• E21B 47/135 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio utilisant des ondes lumineuses, p. ex. ondes infrarouges ou ultraviolettes
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

A vehicle for detecting fields relevant to the suitability of a location for EM telemetry reception. The vehicle may include a magnetometer, a voltage monitoring system and position sensors. A wireless transmitter may transmit readings from the meters, monitoring systems and/or sensors to a receiver. The vehicle may include equipment for inserting or removing ground conductors for use in receiving electromagnetic telemetry signals. The vehicle may be driven or may drive itself autonomously. The vehicle may obtain measurements of magnetic field and/or potential differences at spaced apart locations along a path. Data obtained by the vehicle may be analyzed to identify hot spots. After selecting hot spots, the vehicle may be configured to insert ground conductors at selected locations within the hot spots. After installing ground rods, the vehicle may be configured to continuously monitor the area to maintain an optimum configuration of ground conductors.

Classes IPC  ?

• G01V 3/17 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation spécialement adaptée à l'utilisation pendant le transport, p. ex. par une personne, un véhicule ou un bateau fonctionnant au moyen d'ondes électromagnétiques
• G01V 3/30 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation spécialement adaptée au carottage fonctionnant au moyen d'ondes électromagnétiques
• G01V 3/34 - Transmission de données aux appareils d'enregistrement ou de traitementEnregistrement de données
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio

Abrégé

A gap joint for use with a gap sub for electromagnetic telemetry. The gap joint has a replaceable uphole shoulder on the male gap joint component, which may be composed of a sacrificial material, to extend gap joint useful life where there is electrolysis of the component outside diameter. The gap joint also has a thicker outside diameter seal to reduce the risk of underlying O-ring extrusion and failure, again extending gap joint useful life. The thicker seal may also be able to withstand higher pressures before collapsing or experiencing punctures in unsupported areas. The replaceable shoulder and outside diameter seal can be used separately or together in a gap joint.

Classes IPC  ?

• E21B 17/04 - AccouplementsJoints entre tige et trépan, ou entre tiges
• E21B 17/02 - AccouplementsJoints
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

Data is communicated from sensors at a downhole location near a drill bit to surface equipment. Communication to the surface equipment may be direct or may pass through a series of nodes. The nodes in some cases are intelligently reconfigured to achieve desired data rates, achieve power management goals, and/or compensate for failed nodes.

Classes IPC  ?

• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/04 - Mesure de la profondeur ou du niveau du liquide

Abrégé

A fluid pressure pulse generator for a telemetry tool comprising a stator and a rotor. The stator comprising a stator body and a plurality of radially extending stator projections spaced around the stator body, whereby adjacently spaced stator projections define stator flow channels extending therebetween. The rotor comprising a rotor body and a plurality of radially extending rotor projections spaced around the rotor body. The rotor projections are axially adjacent the stator projections and the rotor is rotatable relative to the stator such that the rotor projections move in and out of fluid communication with the stator flow channels to generate fluid pressure pulses in fluid flowing through the stator flow channels. At least one of the rotor projections has an angled rotor bypass channel which moves in and out of fluid communication with the stator flow channels as the rotor rotates relative to the stator, the angled rotor bypass channel extending through or along a surface of the at least one rotor projection and having a fluid inlet and a fluid outlet downhole and lateral relative to the fluid inlet. The angled rotor bypass channel providing a self-correction mechanism causing the rotor to rotate to an open flow position when there is failure of the telemetry tool.

Classes IPC  ?

• E21B 34/08 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits sensibles à l'écoulement ou à la pression du fluide obtenu
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/14 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

An assembly for securing a probe retention member at a desired location within a tubular interior such as in a drill string collar. The assembly may use one or more securing members external to the retention member. In some embodiments most of the stresses from the probe retention structures of the retention member are isolated.

Classes IPC  ?

• E21B 17/02 - AccouplementsJoints
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
• E21B 23/03 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour mettre en place des outils sur les supports ou dans les retraits ou poches excentrées ou pour les en retirer
• F16D 1/08 - Accouplements pour établir une liaison rigide entre deux arbres coaxiaux ou d'autres éléments mobiles d'une machine pour montage d'un organe sur un arbre ou à l'extrémité d'un arbre avec moyeu de serrageAccouplements pour établir une liaison rigide entre deux arbres coaxiaux ou d'autres éléments mobiles d'une machine pour montage d'un organe sur un arbre ou à l'extrémité d'un arbre avec moyeu et clavette longitudinale

Abrégé

A method for establishing downlink telemetry communication to a downhole system involves placing into a drillstring a telemetry transcoder, and advancing the drillstring so the telemetry transcoder is below the surface. The method then transmits downlink EM telemetry signals from surface equipment. These signals are received at the telemetry transcoder which retransmits the signals as mud pulse signals. The mud pulse signals are received at the downhole system.

Classes IPC  ?

• G01V 1/44 - SéismologieProspection ou détection sismique ou acoustique spécialement adaptées au carottage en utilisant des générateurs et des récepteurs situés dans le même puits
• G01V 3/30 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation spécialement adaptée au carottage fonctionnant au moyen d'ondes électromagnétiques
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide
• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio

Abrégé

A downhole system comprises a main sensor, such as a gamma sensor, and a backup sensor. The backup sensor may be of a different type from the main sensor. In some embodiments the backup sensor is a high reliability sensor that may have a different sensitivity from the main sensor. The system operates both the main and backup sensors and generates calibration data for the backup sensor. If the main sensor fails the calibration data may be applied to process data from the backup sensor to yield an estimate of the data that the main sensor would have yielded if it had remained operational. The calibration data may compensate for temperature variations and/or temporal drift, for example.

Classes IPC  ?

• G01V 13/00 - Fabrication, étalonnage, nettoyage ou réparation des instruments ou dispositifs couverts par les groupes
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
• G01V 5/04 - Prospection ou détection au moyen de rayonnement ionisant, p. ex. de la radioactivité naturelle ou provoquée spécialement adaptée au carottage
• G01T 7/00 - Détails des instruments de mesure des radiations
• G01V 5/12 - Prospection ou détection au moyen de rayonnement ionisant, p. ex. de la radioactivité naturelle ou provoquée spécialement adaptée au carottage en utilisant des sources de radiation nucléaire primaire ou des rayons X en utilisant des sources de rayons gamma ou de rayons X

Abrégé

An assembly for use in subsurface drilling includes a downhole probe supported in a drill string section by centralizing features of a centralizer that is slidably removable from the drill string section. The centralizer may comprise a tubular body having a bore defined through it. A bore wall of the centralizer is fluted to provide inward contact points that support the downhole probe. The downhole probe may be supported for substantially its entire length. The centralizer may optionally comprise and/or be coated with a vibration damping and/or electrically insulating material.

Classes IPC  ?

• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
• E21B 17/10 - Protecteurs contre l'usureDispositifs de centrage

Abrégé

An assembly for use in subsurface drilling includes a downhole probe supported by a centralizer. The centralizer comprises a tubular member that extends around the downhole probe. A wall of the centralizer is fluted to provide inward contact points that support the downhole probe and outward contact points that bear against a bore wall of a section of drill string. The downhole probe may be supported for substantially its entire length.

Classes IPC  ?

• E21B 17/10 - Protecteurs contre l'usureDispositifs de centrage
• E21B 17/16 - Masses-tiges
• E21B 23/01 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour ancrer les outils ou similaires
• E21B 23/02 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour verrouiller les outils ou autres éléments sur des supports ou dans des retraits entre sections adjacentes du tubage
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
• E21B 7/00 - Procédés ou matériels particuliers pour le forage
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

A measurement-while-drilling (MWD) telemetry system comprises a downhole MWD telemetry tool comprising a mud pulse (MP) telemetry unit and an electromagnetic (EM) telemetry unit. The MWD telemetry tool can be configured to transmit data in an EM-only telemetry mode using only the EM telemetry unit, in an MP-only mode using only the MP telemetry unit, or in a concurrent telemetry mode using both the EM and MP telemetry units concurrently. When transmitting data in the concurrent telemetry mode, the telemetry tool can be configured to transmit in a concurrent confirmation mode wherein the same telemetry data is transmitted by each of the EM and MP telemetry units, or in a concurrent shared mode wherein some of the telemetry data is transmitted by the EM telemetry unit, and the rest of the telemetry data is transmitted by the MP telemetry unit. The telemetry tool can be programmed to change its operating telemetry mode in response to a downlink command sent by an operator at surface.

Classes IPC  ?

• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

Apparatus for measuring surface profiles within passages such as the interiors of pipes, tubing, casing or the like includes an optical scanning system that acquires digital data that directly identifies the surface profiles. A temperature control system facilitates operation in high temperature environments. The optical scanning system may include a camera located between a light source and a conical mirror. Light deflecting elements may guide light from the light source to the conical mirror along a path that reverses direction.

Classes IPC  ?

• G01N 21/03 - Détails de structure des cuvettes
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• G02B 23/02 - Télescopes ou lunettes d'approche, p. ex. jumellesPériscopesInstruments pour voir à l'intérieur de corps creuxViseursPointage optique ou appareils de visée comprenant des prismes ou des miroirs
• G02B 23/24 - Instruments pour regarder l'intérieur de corps creux, p. ex. endoscopes à fibres
• G01N 21/954 - Inspection de la surface intérieure de corps creux, p. ex. d'alésages

Abrégé

A gap joint for use with a gap sub for electromagnetic telemetry. The gap joint has a replaceable uphole shoulder on the male gap joint component, which may be composed of a sacrificial material, to extend gap joint useful life where there is electrolysis of the component outside diameter. The gap joint also has a thicker outside diameter seal to reduce the risk of underlying O-ring extrusion and failure, again extending gap joint useful life. The thicker seal may also be able to withstand higher pressures before collapsing or experiencing punctures in unsupported areas. The replaceable shoulder and outside diameter seal can be used separately or together in a gap joint.

Classes IPC  ?

• E21B 17/10 - Protecteurs contre l'usureDispositifs de centrage
• E21B 12/02 - Indicateurs d'usure
• E21B 17/02 - AccouplementsJoints
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio
• E21B 17/04 - AccouplementsJoints entre tige et trépan, ou entre tiges
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

Connectors and connection systems for connecting two tubing sections together are provided. The connectors can include: a first end having an outer surface and adapted for insertion into an end of the tubing section and a second end adapted for connection to a second connector. The connector can have an attachment block in one aspect with a first threaded aperture and a second threaded aperture passing through it so that axial screws and radial screws can secure the connector to the end of a tubing section before it is connected to another connector. In another aspect, the connector can have an attachment slot provided in an outer surface of the first end of the connector sized to fit a retaining clips so that axial screws can secure the connector to an end of a tubing section before the connector is connected to another connector.

Classes IPC  ?

• E21B 17/046 - AccouplementsJoints entre tige et trépan, ou entre tiges avec nervures, goupilles ou mâchoires et rainures complémentaires ou similaires, p. ex. accrochage à baïonnette
• E21B 17/04 - AccouplementsJoints entre tige et trépan, ou entre tiges
• F16L 21/08 - Raccords avec manchon ou douille avec moyens additionnels de verrouillage
• H02G 3/06 - Joints pour connecter des longueurs de tubes de protection les unes aux autres ou à l'enveloppe, p. ex. à la boîte de distributionInstallations de câbles ou de lignes électriques ou de leurs tubes de protection dans ou sur des immeubles, des structures équivalentes ou des véhicules Détails assurant la continuité électrique dans le joint

Produits et services

Downhole drilling hardware and equipment for oil and gas exploration and/or production, namely, centralizers for downhole tools, downhole collars, gap subs, and carriers for lifting downhole tools Downhole survey and measurement hardware and equipment for oil and gas exploration and/or production, namely data telemetry transmitters, data telemetry receivers, surface equipment for transmitting and receiving data telemetry, automated control systems, electronic interfaces for control systems, pulse valves, short hop transmitters and receivers, sensors, connectivity devices for establishing downhole networks, and downhole measurement and logging tools comprising sensors and data telemetry components; computer software for collecting, processing, reporting, and reviewing data collected by downhole sensors in hardware and equipment for oil and gas exploration and/or production; kits comprising one or more of the foregoing goods; parts and fittings for the foregoing goods Oil and gas well drilling services; oil and gas well production and completion monitoring services; rental of hardware and equipment for oil and gas exploration and/or production, namely data telemetry transmitters, data telemetry receivers, centralizers for downhole tools, surface equipment for transmitting and receiving data telemetry, automated control systems, electronic interfaces for control systems, pulse valves, short hop transmitters and receivers, sensors, downhole collars, including gap subs, carriers for lifting downhole tools, connectivity devices for establishing downhole networks, downhole measurement and logging tools comprising sensors and data telemetry components, and kits comprising one or more of the foregoing goods; repair, maintenance and cleaning of hardware and equipment for oil and gas exploration and/or production, namely data telemetry transmitters, data telemetry receivers, centralizers for downhole tools, surface equipment for transmitting and receiving data telemetry, automated control systems, electronic interfaces for control systems, pulse valves, short hop transmitters and receivers, sensors, downhole collars, including gap subs, carriers for lifting downhole tools, connectivity devices for establishing downhole networks, downhole measurement and logging tools comprising sensors and data telemetry components, and kits comprising one or more of the foregoing goods Providing downhole-to-surface, surface-to-downhole and/or downhole-to-downhole data telemetry and data processing for the oil and gas industry, namely, telemetric communication in the nature of electronic transmission of data for the purpose of providing guidance and geological feedback during oil and gas exploration and production Engineering services for the oil and gas industry; custom design and development of technological solutions for the oil and gas industry; oil and gas well logging services; technical support services in the nature of customer support services for hardware and equipment for oil and gas exploration and/or production; tracking and analyzing data relating to the performance, reliability, location and troubleshooting of hardware and equipment for oil and gas exploration and/or production

Abrégé

An electromagnetic telemetry system adjusts telemetry parameters which may include carrier frequency, signal amplitude and/or data encoding protocol to achieve reliable data transmission and to conserve power. In some embodiments, sweep signals transmit a range of carrier frequencies and the parameters are determined in part by analyzing the received sweep signals. In some embodiments, different parameters are selected automatically based on a mode of drilling.

Classes IPC  ?

• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• H04W 52/02 - Dispositions d'économie de puissance
• H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
• H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou pour obtenir des valeurs mesurées
• H04W 52/24 - Commande de puissance d'émission [TPC Transmission power control] le TPC étant effectué selon des paramètres spécifiques utilisant le rapport signal sur parasite [SIR Signal to Interference Ratio] ou d'autres paramètres de trajet sans fil
• H04B 17/318 - Force du signal reçu

Abrégé

Arrangements for retaining coiled battery internals in a coiled orientation within a cell casing, in which end caps and/or sleeves are provided with at least one inward-facing protuberance for engaging and securing the coiled battery internals, and means for securing and aligning pouch cell batteries within a sleeve.

Classes IPC  ?

• H01M 2/02 - Bacs, fourreaux ou enveloppes
• H01M 2/04 - Couvercles ou couvertures
• E21B 41/00 - Matériel ou accessoires non couverts par les groupes
• E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide
• H01M 2/10 - Montures; Dispositifs de suspension; Amortisseurs; Dispositifs de manutention ou de transport; Supports
• H01M 2/16 - Séparateurs; Membranes; Diaphragmes; Eléments d'espacement caractérisés par le matériau
• H01M 2/26 - Connexions d'électrodes
• H01M 2/14 - Séparateurs; Membranes; Diaphragmes; Eléments d'espacement
• H01M 2/18 - Séparateurs; Membranes; Diaphragmes; Eléments d'espacement caractérisés par la forme
• H01M 2/12 - Events ou autres aménagements mécaniques pour faciliter l'échappement des gaz
• H01M 2/08 - Matériaux de scellement
• H01M 10/39 - Accumulateurs non prévus dans les groupes fonctionnant à haute température
• H01M 10/052 - Accumulateurs au lithium

Abrégé

Arrangements for retaining coiled battery internals in a coiled orientation within a cell casing, in which end caps and/or sleeves are provided with at least one inward-facing protuberance for engaging and securing the coiled battery internals, and means for securing and aligning pouch cell batteries within a sleeve.

Classes IPC  ?

• H01M 2/02 - Bacs, fourreaux ou enveloppes
• H01M 2/04 - Couvercles ou couvertures
• E21B 41/00 - Matériel ou accessoires non couverts par les groupes
• E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide
• H01M 2/10 - Montures; Dispositifs de suspension; Amortisseurs; Dispositifs de manutention ou de transport; Supports
• H01M 2/16 - Séparateurs; Membranes; Diaphragmes; Eléments d'espacement caractérisés par le matériau
• H01M 2/26 - Connexions d'électrodes
• H01M 2/14 - Séparateurs; Membranes; Diaphragmes; Eléments d'espacement
• H01M 2/18 - Séparateurs; Membranes; Diaphragmes; Eléments d'espacement caractérisés par la forme
• H01M 2/12 - Events ou autres aménagements mécaniques pour faciliter l'échappement des gaz
• H01M 2/08 - Matériaux de scellement
• H01M 10/39 - Accumulateurs non prévus dans les groupes fonctionnant à haute température
• H01M 10/052 - Accumulateurs au lithium

Abrégé

A gap sub assembly for electromagnetic telemetry used in downhole drilling. The gap sub comprises a female part comprising a female mating section and a male part comprising a male mating section. The male mating section is matingly received within the female mating section and electrically isolated therefrom. One or more electrically insulating bodies secure the male part axially and torsionally relative to the female part. The electrically insulating bodies also electrically isolate the male part from the female part. The electrically insulating bodies can be installed through apertures in the female part or at least some of the electrically insulating bodies can be installed before the male mating section is inserted into the female mating section. The electrically insulating bodies can be held in place on the male mating section using a retention apparatus such as a ring, a scarf, pods or an adhesive.

Classes IPC  ?

• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• H01B 3/12 - Isolateurs ou corps isolants caractérisés par le matériau isolantEmploi de matériaux spécifiés pour leurs propriétés isolantes ou diélectriques composés principalement de substances inorganiques céramiques
• F16L 25/01 - Structure ou détails de raccords de tuyaux non prévus dans les groupes ou présentant in intérêt autre que celui visé par ces groupes spécialement adaptés pour réaliser une conduction électrique entre les deux extrémités raccordées des tuyaux ou entre leurs éléments
• E21B 17/02 - AccouplementsJoints
• E21B 17/042 - AccouplementsJoints entre tige et trépan, ou entre tiges filetés

Abrégé

A wireless communications system for a downhole drilling operation comprises surface communications equipment and a downhole telemetry tool. The surface communications equipment comprises a surface EM communications module with an EM downlink transmitter configured to transmit an EM downlink transmission at a frequency between 0.01 Hz and 0.1 Hz. The downhole telemetry tool is mountable to a drill string and has a downhole electromagnetic (EM) communications unit with an EM downlink receiver configured to receive the EM downlink transmission. The downhole EM communications unit can further comprise an EM uplink transmitter configured to transmit an EM uplink transmission at a frequency greater than 0.5 Hz, in which case the surface EM communications module further comprises an EM uplink receiver configured to receive the EM uplink transmission. More particularly, the downhole EM uplink transmitter can be configured to transmit the EM uplink transmission at a frequency that is at least ten times higher than the EM downlink transmission frequency.

Classes IPC  ?

• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• E21B 17/02 - AccouplementsJoints
• G01V 3/26 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation spécialement adaptée au carottage fonctionnant au moyen de champs magnétiques ou électriques produits ou modifiés par la formation terrestre environnante ou par les dispositifs de détection
• G01V 3/30 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation spécialement adaptée au carottage fonctionnant au moyen d'ondes électromagnétiques
• G01V 3/34 - Transmission de données aux appareils d'enregistrement ou de traitementEnregistrement de données

Abrégé

Methods and apparatus for identifying downhole dynamics in a drilling system are provided. Acceleration-detecting sensors are mounted at multiple locations near to a drill bit, such as at a drill collar. The sensors may be spaced 90° apart along a circumference of the drill collar. The sensors detect acceleration measurements in a plane orthogonal to the drill string's axis of rotation, with respect to a first reference frame that moves with the drill string. The acceleration measurements are received by a processor and processed to determine rotational and revolution positions of the drill string within the wellbore with respect to a static reference frame. Whirl dynamics may, in particular, be determined based on the results in real time.

Classes IPC  ?

• E21B 44/00 - Systèmes de commande automatique spécialement adaptés aux opérations de forage, c.-à-d. systèmes à fonctionnement autonome ayant pour rôle d'exécuter ou de modifier une opération de forage sans l'intervention d'un opérateur humain, p. ex. systèmes de forage commandés par ordinateurSystèmes spécialement adaptés à la surveillance de plusieurs variables ou conditions de forage
• E21B 7/00 - Procédés ou matériels particuliers pour le forage
• G01L 3/26 - Dispositifs pour mesurer le rendement, c.-à-d. le rapport de la puissance de sortie à celle d'entrée
• G01L 5/26 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques pour déterminer la caractéristique de couple en fonction du nombre de tours par unité de temps

Abrégé

A wireless communications system for a downhole drilling operation comprises a drill string, surface communications equipment, and a downhole telemetry tool. The surface communications equipment comprises a surface EM communications module with an EM downlink transmitter configured to transmit through at least a portion of the drill string an EM downlink transmission at a frequency between 0.5 Hz and 180 kHz. The downhole telemetry tool is mountable to a drill string and has a downhole electromagnetic (EM) communications unit with an EM downlink receiver configured to receive the EM downlink transmission. The downhole EM communications unit can further comprise an EM uplink transmitter configured to transmit an EM uplink transmission at a frequency between 0.5 Hz and 180 kHz, in which case the surface EM communications module further comprises an EM uplink receiver configured to receive the EM uplink transmission.

Classes IPC  ?

• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio
• G08C 17/02 - Dispositions pour transmettre des signaux caractérisées par l'utilisation d'une voie électrique sans fil utilisant une voie radio
• H04B 7/24 - Systèmes de transmission radio, c.-à-d. utilisant un champ de rayonnement pour communication entre plusieurs postes
• H04L 25/02 - Systèmes à bande de base Détails

Abrégé

A downhole system provides a data interface to a first downhole tool such as a steerable rotary tool. The data interface uses a close proximity data connection such as a connection between inductive loops or coils or a direct wired or optical connection. The interface provides data to a second downhole tool in a drill string section adjacent to the first downhole tool. In some embodiments data is passed to a third downhole tool that includes a telemetry transmitter. The third downhole tool may comprise a MWD (measurement while drilling) tool.

Classes IPC  ?

• E21B 17/03 - AccouplementsJoints entre la tige ou le tube de forage et le moteur de forage, p. ex. entre la tige de forage et le marteau
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• E21B 17/02 - AccouplementsJoints
• E21B 17/042 - AccouplementsJoints entre tige et trépan, ou entre tiges filetés
• H04B 5/00 - Systèmes de transmission en champ proche, p. ex. systèmes à transmission capacitive ou inductive

Abrégé

A seal and seal assembly for a fluid pressure pulse generating tool. The seal comprises an annular seal section comprising an internal sealing surface and an external sealing surface; and an annular heel section. The seal assembly comprises a seal assembly housing with a longitudinally extending bore therethrough for receiving a driveshaft of the tool and the seal enclosed by the seal assembly housing and configured to surround a portion of the driveshaft. The internal sealing surface of the seal is configured to be in sealing contact with the driveshaft and the external sealing surface of the seal is configured to be in sealing contact with an internal surface of the seal assembly housing. The annular heel section of the seal is configured to provide an interference fit with the driveshaft or with the internal surface of the seal assembly housing.

Classes IPC  ?

• G08B 21/00 - Alarmes réagissant à une seule condition particulière, indésirable ou anormale, et non prévues ailleurs
• G01V 1/04 - Production d'énergie sismique Détails
• G01V 1/137 - Production d'énergie sismique en utilisant des fluides comme moyens d'entraînement hydrauliques, p. ex. en utilisant des fluides à haute pression dont les fluides s'échappent du générateur d'une manière pulsée, p. ex. pour produire des explosions
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

A telemetry system with a plurality of controllers and telemetry systems, where the controllers are configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system.

Classes IPC  ?

• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/024 - Détermination de l'inclinaison ou de la direction des dispositifs dans le trou de forage
• E21B 47/06 - Mesure de la température ou de la pression
• E21B 49/00 - Test pour déterminer la nature des parois des trous de forageEssais de couchesProcédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits

Abrégé

A method for using a downhole probe. The method comprises providing a probe, at least one vertical cross section of the probe having an area of at least pi inches squared. The method further comprises inserting the probe into a bore of a drill collar and passing a drilling fluid through the bore of drill collar at a flow velocity of less than 41 feet per second.

Classes IPC  ?

• E21B 17/16 - Masses-tiges
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
• E21B 17/10 - Protecteurs contre l'usureDispositifs de centrage

Abrégé

A range of apparatus and methods for providing local and long range data telemetry within a wellbore is described. These apparatus and methods may be combined in a wide variety of ways. In some embodiments data is transmitted across a gap in a drill string using signals of a higher frequency for which an electrical impedance of the gap or of a filter connected across the gap is low. Low-frequency EM telemetry signals may be applied across the gap. The gap and any filter connected across the gap present a high impedance to the low-frequency EM telemetry signals. The described technology may be applied for transferring sensor readings between downhole electrical packages. In some embodiments sensors are electrically connected across electrically insulating gaps in the drill string.

Classes IPC  ?

• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production

Abrégé

A fluid pressure pulse generator apparatus for a telemetry tool comprising a stator and a rotor. The stator comprises a stator body and a plurality of radially extending stator projections spaced around the stator body and the spaced stator projections define stator flow channels extending therebetween. The rotor comprises a rotor body and a plurality of radially extending rotor projections spaced around the rotor body. The rotor projections are axially adjacent the stator projections and the rotor is rotatable relative to the stator such that the rotor projections move in and out of fluid communication with the stator flow channels to create fluid pressure pulses in fluid flowing through the stator flow channels. At least one of the rotor projections and at least one of the stator projections has a standard outer diameter. At least one of the rotor projections and/or at least one of the stator projections has a reduced outer diameter. The reduced outer diameter rotor and/or stator projections provide bypass channels for flow of fluid and allow for generation of a pattern of different fluid pressure pulses.

Classes IPC  ?

• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits
• E21B 44/00 - Systèmes de commande automatique spécialement adaptés aux opérations de forage, c.-à-d. systèmes à fonctionnement autonome ayant pour rôle d'exécuter ou de modifier une opération de forage sans l'intervention d'un opérateur humain, p. ex. systèmes de forage commandés par ordinateurSystèmes spécialement adaptés à la surveillance de plusieurs variables ou conditions de forage

Abrégé

An active downhole antenna located in a borehole receives electromagnetic (EM) telemetry transmissions from sources in adjacent boreholes. The antenna comprises a processor operable do decode and measure signal to noise ratio of received transmissions. Data received at the active antenna is transmitted to surface using a high-speed data communication network. The active antenna may handle data communications from multiple downhole EM telemetry transmitters.

Classes IPC  ?

• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio
• H04B 13/02 - Systèmes de transmission dans lesquels le milieu de propagation est constitué par la terre ou une grande masse d'eau la recouvrant, p. ex. télégraphie par le sol
• G01S 5/00 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance
• G01S 11/00 - Systèmes pour déterminer la distance ou la vitesse sans utiliser la réflexion ou la reradiation

Abrégé

One or more seals may be provided in a gap sub to prevent the ingress of drilling fluid into an insulating gap between a male member of the gap sub and a female member of the gap sub. A first seal may comprise an internal gap sub seal provided near the tip of the male member of the gap sub. A second seal may comprise an external gap sub seal provided near the tip of the female member of the gap sub. The first and second seals may comprise non-conductive materials. The first and second seals may each comprise one or more O-rings. The first and second seals may comprise one or more lips, protrusions or flanges to engage the male and/or female members of the gap sub for maintaining contact with the male and/or female members during deformation of the gap sub.

Classes IPC  ?

• E21B 17/04 - AccouplementsJoints entre tige et trépan, ou entre tiges
• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio
• F16L 25/02 - Structure ou détails de raccords de tuyaux non prévus dans les groupes ou présentant in intérêt autre que celui visé par ces groupes spécialement adaptés pour isoler électriquement l'une de l'autre les extrémités raccordées des tuyaux

Abrégé

A telemetry system useful in drilling operations receives and displays telemetry data. The telemetry system also determines and displays information regarding the status of the telemetry transmission. The telemetry system may display which data will be updated next, when the update is expected to be complete, and how reliable is the currently displayed data. The system can facilitate efficient drilling operations.

Classes IPC  ?

• G01V 3/00 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits

Abrégé

A measurement-while-drilling (MWD) telemetry system comprises a downhole MWD telemetry tool comprising a mud pulse (MP) telemetry unit and an electromagnetic (EM) telemetry unit. The MWD telemetry tool can be configured to transmit data in an EM-only telemetry mode using only the EM telemetry unit, in an MP-only mode using only the MP telemetry unit, or in a concurrent telemetry mode using both the EM and MP telemetry units concurrently. When transmitting data in the concurrent telemetry mode, the telemetry tool can be configured to transmit in a concurrent confirmation mode wherein the same telemetry data is transmitted by each of the EM and MP telemetry units, or in a concurrent shared mode wherein some of the telemetry data is transmitted by the EM telemetry unit, and the rest of the telemetry data is transmitted by the MP telemetry unit. The telemetry tool can be programmed to change its operating telemetry mode in response to a downlink command sent by an operator at surface.

Classes IPC  ?

• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage

Abrégé

A downhole probe of a drilling rig has a probe sleeve for protecting the downhole probe. The probe sleeve may be made of a metal or a polymer such as polyphenylene sulfide. The probe sleeve may be heat-shrinkable to provide a tight fit between the downhole probe and the probe sleeve. The probe sleeve may include one or more protrusions shaped to engage a centralizer surrounding at least part of the downhole probe. The one or more protrusions may be arranged to prevent rotation of the centralizer relative to the probe sleeve. The probe sleeve may be made using a modified extrusion process and may include reinforcement to add strength to weld-lines along the length of the probe sleeve. The protrusions may also be used as reinforcement.

Classes IPC  ?

• E21B 47/017 - Protection des instruments de mesure
• E21B 44/00 - Systèmes de commande automatique spécialement adaptés aux opérations de forage, c.-à-d. systèmes à fonctionnement autonome ayant pour rôle d'exécuter ou de modifier une opération de forage sans l'intervention d'un opérateur humain, p. ex. systèmes de forage commandés par ordinateurSystèmes spécialement adaptés à la surveillance de plusieurs variables ou conditions de forage
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire

Abrégé

A telemetry tool comprising a pulser assembly, a primary seal, a fluid pressure pulse generator and a secondary seal. The pulser assembly comprises a housing and a driveshaft extending out of an opening in the housing. The primary seal surrounds and seals against the driveshaft to seal the opening in the housing. The fluid pressure pulse generator comprises a stator with a bore therethrough configured to fixedly attach to the housing or to a drill collar surrounding the fluid pressure pulse generator, and a rotor fixedly attached to the driveshaft. The driveshaft and rotor rotate relative to the fixed stator to generate pressure pulses in mud flowing through the fluid pressure pulse generator. The secondary seal is seated in the stator bore and surrounds and seals against a portion of the driveshaft extended out of the housing or a portion of the rotor to reduce the amount of mud, grit and debris impinging on the primary seal which could otherwise cause wear or damage the primary seal.

Classes IPC  ?

• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

A gap joint for use with a gap sub for electromagnetic telemetry. The gap joint has a replaceable uphole shoulder on the male gap joint component, which may be composed of a sacrificial material, to extend gap joint useful life where there is electrolysis of the component outside diameter. The gap joint also has a thicker outside diameter seal to reduce the risk of underlying O-ring extrusion and failure, again extending gap joint useful life. The thicker seal may also be able to withstand higher pressures before collapsing or experiencing punctures in unsupported areas. The replaceable shoulder and outside diameter seal can be used separately or together in a gap joint.

Classes IPC  ?

• E21B 17/02 - AccouplementsJoints
• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio

Abrégé

An insulating collar for a gap sub assembly for electromagnetic (EM) telemetry used in downhole drilling is disclosed. The gap sub assembly comprises a female member comprising a female mating section and a male member comprising a male mating section and a gap section. The male mating section is matingly received within the female mating section and electrically isolated therefrom. The insulating collar is positioned on the gap section. The collar is made up of a framework with a plurality of discrete bodies spaced about the framework and a portion of each of the discrete bodies protrudes above the framework. Either the framework or the discrete bodies are made of an electrical insulator material to electrically isolate one end of the collar from the other end of the collar. The collar therefore electrically isolates the male member from the female member and the male member, female member and insulating collar function as the “gap sub” for EM telemetry.

Classes IPC  ?

• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 17/02 - AccouplementsJoints
• E21B 17/042 - AccouplementsJoints entre tige et trépan, ou entre tiges filetés
• E21B 17/046 - AccouplementsJoints entre tige et trépan, ou entre tiges avec nervures, goupilles ou mâchoires et rainures complémentaires ou similaires, p. ex. accrochage à baïonnette
• F16L 15/08 - Raccords avec filetageFormes des filetages pour ces raccords avec des éléments supplémentaires
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• F16L 25/02 - Structure ou détails de raccords de tuyaux non prévus dans les groupes ou présentant in intérêt autre que celui visé par ces groupes spécialement adaptés pour isoler électriquement l'une de l'autre les extrémités raccordées des tuyaux

Abrégé

An assembly for use in subsurface drilling includes a downhole probe supported by a locking mechanism with a bore of a drill string section. The probe comprises a first spider and a second spider at the uphole and downhole sections of the probe. The locking mechanism secures the probes in the bore against axial and rotational movement relative the drill string section.

Classes IPC  ?

• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
• E21B 23/03 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour mettre en place des outils sur les supports ou dans les retraits ou poches excentrées ou pour les en retirer
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage

Produits et services

(1) Hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools, downhole drill collars namely gap subs, lifting and hoisting equipment for lifting downhole tools, and parts and fittings for all of the foregoing goods; kits comprising hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools; kits comprising hardware and equipment for oil and gas exploration and production, namely downhole drill collars namely gap subs; kits comprising hardware and equipment for oil and gas exploration and production, namely lifting and hoisting equipment for lifting downhole tools. (2) Hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters, data telemetry receivers, surface equipment for transmitting and receiving data telemetry, namely data telemetry transmitters, data telemetry receivers, display computers, surface decoder and encoder software for processing telemetry data signals, surface antenna rods, surface downlink stakes made of conductive materials, electronic cables and connections, automated control systems comprising electrical control modules and software and firmware for use in data collection and data reporting of data collected by downhole tools and system control of downhole exploration and production processes and downhole tools, electronic display units for control systems of downhole exploration and production processes and downhole tools, pulse valves, namely electronic valves for controlling fluids, short hop transmitters and receivers, sensors, namely sensors for temperature, sensors for pressure, sensors for formation evaluation properties such as gamma sensors and resistivity sensors, sensors for current and voltage measurement of transmitted telemetry signals, inclination sensors, azimuth sensors, RPM sensors, acceleration sensors, shock sensors, vibration sensors, and telemetry reception sensors, connectivity devices for establishing downhole networks namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface decoder and encoder software for processing telemetry data signals, surface antenna rods, surface downlink stakes made of conductive materials, probes and downhole drill collars for downhole tools namely gap subs, probes and tool centralizers for downhole tools being centralizers for probe positioning, and software and firmware for use in data collection and data reporting of data collected by downhole tools, and system control of downhole exploration and production processes and downhole tools, downhole measurement and logging tools comprising sensors and data telemetry components, and parts and fittings for all of the foregoing goods; computer software for collecting, processing, reporting, and reviewing data collected by downhole sensors in hardware and equipment for oil and gas exploration and production; kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters; kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry receivers; kits comprising hardware and equipment for oil and gas exploration and production, namely surface equipment for transmitting and receiving data telemetry, namely data telemetry transmitters, data telemetry receivers, display computers, surface decoder and encoder software for processing telemetry data signals, surface antenna rods, surface downlink stakes made of conductive materials, electronic cables and connections; kits comprising hardware and equipment for oil and gas exploration and production, namely automated control systems comprising electrical control modules and software and firmware for use in data collection and data reporting of data collected by downhole tools and system control of downhole exploration and production processes and downhole tools; kits comprising hardware and equipment for oil and gas exploration and production, namely electronic display units for control systems of downhole exploration and production processes and downhole tools; kits comprising hardware and equipment for oil and gas exploration and production, namely pulse valves, namely electronic valves for controlling fluids; kits comprising hardware and equipment for oil and gas exploration and production, namely short hop transmitters and receivers; kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for temperature; kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for pressure; kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for formation evaluation properties such as gamma sensors and resistivity sensors; kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for current and voltage measurement of transmitted telemetry signals; kits comprising hardware and equipment for oil and gas exploration and production, namely inclination sensors; kits comprising hardware and equipment for oil and gas exploration and production, namely azimuth sensors; kits comprising hardware and equipment for oil and gas exploration and production, namely RPM sensors; kits comprising hardware and equipment for oil and gas exploration and production, namely acceleration sensors; kits comprising hardware and equipment for oil and gas exploration and production, namely shock sensors; kits comprising hardware and equipment for oil and gas exploration and production, namely vibration sensors; kits comprising hardware and equipment for oil and gas exploration and production, namely telemetry reception sensors; kits comprising hardware and equipment for oil and gas exploration and production, namely connectivity devices for establishing downhole networks namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface decoder and encoder software for processing telemetry data signals, surface antenna rods, surface downlink stakes made of conductive materials, probes and downhole drill collars for downhole tools namely gap subs, probes and tool centralizers for downhole tools being centralizers for probe positioning, and software and firmware for use in data collection and data reporting of data collected by downhole tools, and system control of downhole exploration and production processes and downhole tools; kits comprising hardware and equipment for oil and gas exploration and production, namely downhole measurement and logging tools comprising sensors and data telemetry components; kits comprising hardware and equipment for oil and gas exploration and production, namely computer software for collecting, processing, reporting, and reviewing data collected by downhole sensors in hardware and equipment for oil and gas exploration and production. (1) Repair, maintenance and cleaning of hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters, data telemetry receivers, centralizers for downhole tools being centralizers for probe positioning, surface equipment for transmitting and receiving data telemetry, namely data telemetry transmitters, data telemetry receivers, display computers, surface antenna rods, surface downlink stakes made of conductive materials, electronic cables and connections, automated control systems comprising electrical control modules, electronic display units for control systems of downhole exploration and production processes and downhole tools, pulse valves, namely electronic valves for controlling fluids, short hop transmitters and receivers, sensors, namely sensors for temperature, sensors for pressure, sensors for formation evaluation properties such as gamma sensors and resistivity sensors, sensors for current and voltage measurement of transmitted telemetry signals, inclination sensors, azimuth sensors, RPM sensors, acceleration sensors, shock sensors, vibration sensors, and telemetry reception sensors, downhole drill collars, and gap subs, lifting and hoisting equipment for lifting downhole tools, connectivity devices for establishing downhole networks namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface antenna rods, and surface downlink stakes made of conductive materials, probes and hoisting connectors for transporting downhole probes, probes and tool centralizers for downhole tools being centralizers for probe positioning, downhole measurement and logging tools comprising sensors and data telemetry components; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry receivers; repair, maintenance and cleaning of kits comprising oil and gas exploration and production, namely centralizers for downhole tools being centralizers for probe positioning; repair, maintenance and cleaning of kits comprising surface equipment for transmitting and receiving data telemetry, namely, data telemetry transmitters, data telemetry receivers, display computers, surface antenna rods, surface downlink stakes made of conductive materials, and electronic cables and connections; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely automated control systems comprising electrical control modules; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely electronic display interfaces for control systems of downhole exploration and production processes and downhole tools; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely pulse valves, namely electronic valves for controlling fluids; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely short hop transmitters and receivers; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for temperature; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for pressure; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for formation evaluation properties such as gamma sensors and resistivity sensors; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for current and voltage measurement of transmitted telemetry signals; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely inclination sensors; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely azimuth sensors; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely RPM sensors; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely acceleration sensors; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely shock sensors; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely vibration sensors; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely telemetry reception sensors; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely downhole drill collars, and gap subs; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely lifting and hoisting equipment for lifting downhole tools; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely connectivity devices for establishing downhole networks namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface antenna rods, surface downlink stakes made of conductive materials, probes and hoisting connectors for transporting downhole probes, probes and tool centralizers for downhole tools being centralizers for probe positioning; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely downhole measurement and logging tools comprising sensors and data telemetry components; oil and gas well drilling services; rental of hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools, pulse valves namely electronic valves for controlling fluids, downhole drill collars, and gap subs, lifting and hoisting equipment for lifting downhole tools, probes and hoisting connectors for transporting downhole probes, probes and tool centralizers for downhole tools being centralizers for probe positioning; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools being centralizers for probe positioning; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely pulse valves, namely electronic valves for controlling fluids; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely downhole drill collars, and gap subs; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely lifting and hoisting equipment for lifting downhole tools; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely probes and hoisting connectors for transporting downhole probes, probes and tool centralizers for downhole tools being centralizers for probe positioning. (2) Repair, maintenance and cleaning of hardware and equipment for oil and gas exploration and production, namely surface equipment for transmitting and receiving data telemetry, namely surface decoder and encoder software for processing telemetry data signals, and automated control systems comprising software and firmware for use in data collection and data reporting of data collected by downhole tools and system control of downhole exploration and production processes and downhole tools, surface equipment for transmission and reception of telemetry, namely, surface decoder and encoder software for processing telemetry data signals and software and firmware for use in data collection and data reporting of data collected by downhole tools, and system control of downhole exploration and production processes and downhole tools; repair, maintenance and cleaning of kits comprising surface equipment for transmitting and receiving data telemetry, namely surface decoder and encoder software for processing data telemetry signals; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely automated control systems comprising software and firmware for use in data collection and data reporting of data collected by downhole tools and system control of downhole exploration and production processes and downhole tools; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely connectivity devices for establishing downhole networks namely, surface equipment for transmission and reception of telemetry, namely surface decoder and encoder software for processing telemetry data signals, and software and firmware for use in data collection and data reporting of data collected by downhole tools, and system control of downhole exploration and production processes and downhole tools; mechanical, electrical and software engineering services in the field of developing hardware, equipment and software for the oil and gas industry; custom design and development of hardware, equipment and software for the oil and gas industry; oil and gas well logging services; customer support services, namely, troubleshooting in the nature of diagnosing problems with hardware and equipment for oil and gas exploration and production; tracking and analyzing data relating to the performance, reliability, location and troubleshooting of hardware and equipment for oil and gas exploration and production; oil and gas well production and completion monitoring services; rental of hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters, data telemetry receivers, surface equipment for transmitting and receiving data telemetry, namely data telemetry transmitters, data telemetry receivers, display computers, surface decoder and encoder software for processing telemetry data signals, surface antenna rods, surface downlink stakes made of conductive materials, electronic cables and connections, automated control systems comprising electrical control modules and software and firmware for use in data collection and data reporting of data collected by downhole tools and system control of downhole exploration and production processes and downhole tools, electronic display units for control systems of downhole exploration and production processes and downhole tools, short hop transmitters and receivers, sensors, namely sensors for temperature, sensors for pressure, sensors for formation evaluation properties such as gamma sensors and resistivity sensors, sensors for current and voltage measurement of transmitted telemetry signals, inclination sensors, azimuth sensors, RPM sensors, acceleration sensors, shock sensors, vibration sensors, and telemetry reception sensors, connectivity devices for establishing downhole networks namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface decoder and encoder software for processing telemetry data signals, surface antenna rods, surface downlink stakes made of conductive materials, and software and firmware for use in data collection and data reporting of data collected by downhole tools, and system control of downhole exploration and production processes and downhole tools, and downhole measurement and logging tools comprising sensors and data telemetry components; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry receivers; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools being centralizers for probe positioning; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely surface equipment for transmitting and receiving data telemetry, namely data telemetry transmitters, data telemetry receivers, display computers, surface decoder and encoder software for processing telemetry data signals, surface antenna rods, surface downlink stakes made of conductive materials, electronic cables and connections; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely automated control systems comprising electrical control modules and software and firmware for use in data collection and data reporting of data collected by downhole tools and system control of downhole exploration and production processes and downhole tools; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely electronic display units for control systems of downhole exploration and production processes and downhole tools; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely short hop transmitters and receivers; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for temperature; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for pressure; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for formation evaluation properties such as gamma sensors and resistivity sensors; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for current and voltage measurement of transmitted telemetry signals; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely inclination sensors; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely azimuth sensors; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely RPM sensors; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely acceleration sensors; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely shock sensors; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely vibration sensors; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely telemetry reception sensors; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely connectivity devices for establishing downhole networks namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface decoder and encoder software for processing telemetry data signals, surface antenna rods, surface downlink stakes made of conductive materials, and software and firmware for use in data collection and data reporting of data collected by downhole tools, and system control of downhole exploration and production processes and downhole tools; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely downhole measurement and logging tools comprising sensors and data telemetry components; oil and gas well services providing downhole-to-surface, surface-to-downhole and downhole-to-downhole data telemetry and data processing for the oil and gas industry, namely guidance and geological feedback and telemetric communication for telemetry tool utilization and optimization consulting, and monitoring of data during oil and gas exploration and production for scientific research purposes.

Abrégé

Method and apparatus for transmitting data to or from a downhole tool while the tool is at or near the surface using a wireless data link. A downhole tool comprising a gap sub having a tubular section with first and second longitudinally spaced-apart electrically-conducting parts that are electrically isolated from each other. An electromagnetic telemetry transmitter is connected to apply a potential difference between the first and second electrically conductive parts. A single-wire bus provides a data connection between one of the first and second electrically conductive parts and a data processor.

Classes IPC  ?

• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou pour obtenir des valeurs mesurées

Abrégé

A downhole probe is adapted to be supported in drill string sections having different internal diameters with the use of a set of interchangeable centralizers. Each centralizer is dimensioned to snugly receive the downhole probe and to bear against the bore wall of a drill-string section. Interchangeable axial supports such as spiders may also be provided in a set. The downhole probe may comprise a slick body. As drilling progresses the downhole probe may be adapted to be received in drill string sections of varying diameters.

Classes IPC  ?

• E21B 17/16 - Masses-tiges
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
• E21B 17/10 - Protecteurs contre l'usureDispositifs de centrage
• E21B 23/01 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour ancrer les outils ou similaires
• E21B 23/02 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour verrouiller les outils ou autres éléments sur des supports ou dans des retraits entre sections adjacentes du tubage
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• E21B 7/00 - Procédés ou matériels particuliers pour le forage
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

A pressure compensation device for a downhole fluid pressure pulse generator comprising: a membrane sleeve; a membrane support with a bore for receiving a drive-shaft, a central section which receives the membrane sleeve, a male mating section on each side, each having a groove extending around an external surface and at least one opening aligned with the groove; a pair of female mating components with a bore and a channel in an internal surface, each female mating component configured to mate with one of the male mating sections to axially clamp the membrane sleeve between the membrane support and the female mating components; and a pair of retaining rings each received between the male mating section groove and the female mating component channel, where the retaining rings are accessible through the opening in the male mating section and radially expandable into a space in the female mating component to unseat the retaining ring from the groove for removal.

Classes IPC  ?

• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

A device and method for retaining a sacrificial wear sleeve on the exterior of an in-pipe device such as an electronics package or probe. In one embodiment, the retention mechanism comprises a ring having a protuberance or lip extending parallel to and against the end of the sleeve, thus pressing the end of the sleeve against the external surface of the device. This has the advantage, in situations where fluids are flowing through the pipe and around the device, of reducing the risk of fluids moving beneath the sleeve and damaging it and/or the underlying device external surface. In another embodiment, the retention mechanism is of unitary construction with the device itself and comprises a protuberance or lip extending parallel to and against the end of the sleeve, thus pressing the end of the sleeve against the external surface of the device.

Classes IPC  ?

• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire

Abrégé

A measurement-while-drilling (MWD) telemetry system comprises a downhole MWD telemetry tool comprising a mud pulse (MP) telemetry unit and an electromagnetic (EM) telemetry unit. The MWD telemetry tool can be configured to transmit data in an EM-only telemetry mode using only the EM telemetry unit, in an MP-only mode using only the MP telemetry unit, or in a concurrent telemetry mode using both the EM and MP telemetry units concurrently. When transmitting data in the concurrent telemetry mode, the telemetry tool can be configured to transmit in a concurrent confirmation mode wherein the same telemetry data is transmitted by each of the EM and MP telemetry units, or in a concurrent shared mode wherein some of the telemetry data is transmitted by the EM telemetry unit, and the rest of the telemetry data is transmitted by the MP telemetry unit. The telemetry tool can be programmed to change its operating telemetry mode in response to a downlink command sent by an operator at surface.

Classes IPC  ?

• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage

Abrégé

An electromagnetic telemetry system adjusts telemetry parameters which may include carrier frequency, signal amplitude and/or data encoding protocol to achieve reliable data transmission and to conserve power. In some embodiments, sweep signals transmit a range of carrier frequencies and the parameters are determined in part by analyzing the received sweep signals. In some embodiments, different parameters are selected automatically based on a mode of drilling.

Classes IPC  ?

• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• H04W 52/02 - Dispositions d'économie de puissance
• H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
• H04B 17/318 - Force du signal reçu

Abrégé

A pressure measurement apparatus for a downhole measurement-while-drilling tool comprises a feed through connector and a pressure transducer. The feed through connector comprises a body with a first end and an opposite second end, at least one electrical interconnection extending axially through the body and out of the first and second ends, and a pressure transducer receptacle in the first end and a communications bore extending from the receptacle to the second end. The pressure transducer is seated in the receptacle such that a pressure at the first end can be measured, and comprises at least one electrical contact that extends from the pressure transducer through the communication bore and out of the second end. The pressure transducer can take pressure measurements used to predict wear of a primary seal in a motor subassembly of the tool, detect a pressure-related battery failure event, and control operation of a dual pulse height fluid pressure pulse generator.

Classes IPC  ?

• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits
• E21B 47/06 - Mesure de la température ou de la pression
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire

Abrégé

A method and apparatus for downhole data transmission. The method comprising monitoring electrical impedance properties of a downhole formation by applying an electrical signal between a first portion and a second portion of a drill string that are electrically insulated from each other by an insulating portion, selecting a frequency for transmitting data by electromagnetic telemetry based at least in part on the monitored electrical impedance and transmitting the data by encoding the data in a waveform having the selected frequency and applying the waveform between the first portion and the second portion of the drill string.

Classes IPC  ?

• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 49/00 - Test pour déterminer la nature des parois des trous de forageEssais de couchesProcédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• G01V 3/20 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation spécialement adaptée au carottage fonctionnant par propagation de courant électrique
• G08C 19/12 - Systèmes de transmission de signaux électriques dans lesquels le signal transmis est la fréquence ou la phase d'un courant alternatif
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits

Abrégé

A method for selecting a drilling fluid pressure pulse transmission frequency in a downhole telemetry tool comprises: emitting a frequency sweep wave in a drilling fluid that comprises pressure pulses over a range of frequencies and over a period of time; measuring a pressure of the drilling fluid at the telemetry tool while the frequency sweep wave is being emitted; determining a signal strength at each frequency in the range of frequencies from the measured pressure of the drilling fluid; and selecting at least one frequency in the range of frequencies that meets a selected signal strength threshold as a telemetry signal transmission frequency for the telemetry tool. The method can further comprise encoding the at least one selected frequency in a header message and transmitting the header message to surface using pressure pulse telemetry, and then encoding telemetry data into a pressure pulse telemetry signal and transmitting the pressure pulse telemetry signal to surface at the at least one selected frequency.

Classes IPC  ?

• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

A fluid pressure pulse generator for a downhole telemetry tool comprising a stator and a rotor. The stator comprises a stator flow diverter radially extending across a flow path for fluid flowing through the fluid pressure pulse generator and having one or more than one stator flow channel therethrough through which the fluid flows. The rotor comprises a rotor flow diverter radially extending across the flow path for fluid flowing through the fluid pressure pulse generator and having one or more than one rotor flow channel therethrough through which the fluid flows. The rotor flow diverter is axially adjacent the stator flow diverter and the rotor flow diverter is rotatable relative to the stator flow diverter to move the one or more than one rotor flow channel in and out of fluid communication with the one or more than one stator flow channel to create fluid pressure pulses in the fluid flowing through the fluid pressure pulse generator. A rotor/driveshaft coupling releasably couples the driveshaft of a probe of the tool and the rotor such that the probe can be decoupled from the rotor and removed from a sub housing the fluid pressure pulse generator.

Classes IPC  ?

• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits
• F01C 1/02 - "Machines" ou machines motrices à piston rotatif du type à engrènement, c.-à-d. avec mouvement de translation circulaire des organes coopérants, tous les organes ayant le même nombre de dents ou de parties équivalentes de prise

Abrégé

A flow bypass sleeve for a fluid pressure pulse generator of a downhole telemetry tool. The fluid pressure pulse generator comprising a stator having one or more flow channels or orifices through which drilling fluid flows and a rotor which rotates relative to the stator to move in and out of fluid communication with the flow channels or orifices to create fluid pressure pulses in the drilling fluid flowing through the fluid pressure pulse generator. The flow bypass sleeve is configured to attach to a drill collar which housing the telemetry tool and comprises a body with a bore therethrough which receives the fluid pressure pulse generator. The body includes at least one longitudinally extending bypass channel comprising a groove longitudinally extending along an internal surface of the body or an aperture longitudinally extending through the body. The bypass channel extends across at least a portion of both the stator and the rotor when the fluid pressure pulse generator is received in the flow bypass sleeve such that the drilling fluid flows along the bypass channel as well as flowing through the flow channels or orifices. The bypass channel diverts drilling fluid around the fluid pressure pulse generator and may be dimensioned to control the amount of drilling fluid being diverted.

Classes IPC  ?

• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

An electromagnetic telemetry signal generating assembly comprises a first section of drill string, a second section of drill string, a gap sub configured to insulate the first section from the second section, and a power source configured to provide a first voltage to a control circuit. The control circuit is configured to drive a second voltage between the sections of drill string. The gap sub provides a gap of at least 12 inches (30 cm). The second voltage may be different than the first voltage.

Classes IPC  ?

• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 17/02 - AccouplementsJoints

Abrégé

The embodiments described herein generally relate to a method and apparatus for providing a back up system of Directional and Inclination (D&I) information to be gathered and transmitted in addition to primary D&I sensors currently employed in industry. A downhole probe assembly including primary sensors, back up sensors and a controller is disclosed. The primary sensors comprise primary accelerometers and primary magnetometers configured to gather information relating to each of orthogonal axes X, Y and Z. The back up sensors comprise back up accelerometers configured to gather information relating to each of orthogonal axes X, Y and Z, the back up accelerometers being solid state accelerometers. The controller is in electrical communication with the primary sensors and the back up sensors. The controller is configured to receive and process information from the primary sensors and the back up sensors so that information from the back up accelerometers can be used when one or more of the primary accelerometers fail, which may allow drilling operations to continue despite such failure.

Classes IPC  ?

• E21B 47/024 - Détermination de l'inclinaison ou de la direction des dispositifs dans le trou de forage
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/022 - Détermination de l'inclinaison ou de la direction du trou de forage, p. ex. à l'aide de géomagnétisme
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire

Abrégé

An assembly for receiving telemetry signals from downhole equipment is located at a top end of a drill string above a drill rig floor. The assembly may be configured to receive multiple types of telemetry signals, for example, two or more of electromagnetic telemetry, mud pulse telemetry and drill string acoustic telemetry signals. The assembly may comprise a cap comprising a coupling and an end separated by an electrically-insulating gap region. The end of the cap may be connected to a grounding system for the drill rig.

Classes IPC  ?

• G01V 3/00 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• H04L 29/08 - Procédure de commande de la transmission, p.ex. procédure de commande du niveau de la liaison
• H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou pour obtenir des valeurs mesurées
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• E21B 17/02 - AccouplementsJoints
• E21B 33/06 - Obturateurs anti-éruption
• E21B 47/06 - Mesure de la température ou de la pression
• E21B 3/02 - Moyens d'entraînement de surface pour forage par rotation

Abrégé

An assembly for securing a probe retention member at a desired location within a tubular interior such as in a drill string collar, using one or more securing members external to the retention member or isolating most of the stresses from the probe retention structures of the retention member.

Classes IPC  ?

• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• F16B 1/00 - Dispositifs pour assembler des éléments structuraux ou parties de machines ou bien pour empêcher tout mouvement relatif entre eux
• F16B 11/00 - Assemblage d'éléments structuraux ou parties de machines par collage ou en les pressant l'un contre l'autre, p. ex. soudage sous pression à froid
• F16D 1/06 - Accouplements pour établir une liaison rigide entre deux arbres coaxiaux ou d'autres éléments mobiles d'une machine pour montage d'un organe sur un arbre ou à l'extrémité d'un arbre

Produits et services

Hardware and equipment for oil and gas exploration and production, namely, centralizers being machine tools for probe positioning, and structural parts for centralizers, namely, gap subs, downhole subs, and replacement components for gap subs and downhole subs; oil and gas exploration equipment, namely, turbine power generators and downhole probe carriers being mechanical hoists for transporting downhole probes, mechanical couplers for machines, and mechanical seals Hardware and equipment for oil and gas exploration and production, namely, data telemetry transmitters, data telemetry receivers, surface equipment for receiving uplink data telemetry, namely, display computers, surface decoder and encoder software, surface antenna rods, and surface downlink stakes being downhole surface probes, electrical cables and connectors, automated control systems comprising electrical controllers, data collection, data reporting, and system control firmware and software, pulse valves being electronic valves for controlling fluids, downhole measurement and logging tools comprising sensors, namely, sensors for temperature, sensors for pressure, sensors for formation evaluation properties such as gamma sensors and resistivity sensors, sensors for current and voltage measurement of transmitted telemetry signals, inclination sensors, azimuth sensors, RPM sensors, acceleration sensors, shock sensors, vibration sensors, directional sensors, and telemetry reception sensors, and data telemetry components, namely, measurement, logging and communication probes, power sources, namely, batteries, connectivity devices for establishing downhole networks, namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface decoder and encoder software, surface antenna rods, and surface downlink stakes being downhole surface probes, and data collection, data reporting, and system control firmware and software, replacement components or subcomponents for data telemetry transmitters, data telemetry receivers, surface equipment in the nature of computer hardware, electric cables and connectors, automated control systems comprising computer hardware, downhole measurement and logging tools being computer hardware, and connectivity devices, namely, electrical connectors, electronic boards being computer hardware, batteries and remote controls for motors; computer software for collecting, processing, reporting, and reviewing data collected by downhole sensors in hardware and equipment for oil and gas exploration and production Data processing for the oil and gas industry Rental of hardware and equipment for oil and gas exploration and production, excluding computer hardware, namely, data telemetry transmitters, data telemetry receivers, centralizers for downhole tools, gap subs, surface equipment for receiving uplink data telemetry, automated control systems, electronic interfaces for control systems, pulse valves, downhole measurement and logging tools comprising sensors, data telemetry components, and connectivity devices for establishing downhole networks, namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, surface antenna rods, and surface downlink stakes, cables and connections, probe and tool carrier subs, probe and tool centralizers; repair, maintenance and cleaning of hardware and equipment for oil and gas exploration and production, namely, data telemetry transmitters, data telemetry receivers, centralizers for downhole tools, gap subs, surface equipment for receiving uplink data telemetry, automated control systems, electronic interfaces for control systems, pulse valves, downhole measurement and logging tools comprising sensors and data telemetry components, and connectivity devices for establishing downhole networks, namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface antenna rods, and/or surface downlink stakes, cables and connections, probe and tool carrier subs, probe and tool centralizers for oil and gas exploration and production Engineering services for the oil and gas industry in the field of developing hardware, equipment and software for the oil and gas industry; custom design and development of technological solutions for the oil and gas industry, namely, mechanical and electrical equipment, tools and devices, for use on surface and downhole, with associated hardware, firmware, and software, for telemetric communication and control of downhole and surface devices; oil and gas well exploration and production services, namely, oil and gas well logging services; customer support services, namely, troubleshooting in the nature of diagnosing problems with hardware and equipment for oil and gas exploration and production; oil and gas well services providing downhole-to-surface, surface-to-downhole and/or downhole-to-downhole data telemetry, telemetry tool utilization and optimization consulting; rental of computer hardware and related software for oil and gas exploration and production, namely, data telemetry transmitters, data telemetry receivers, surface equipment for receiving uplink data telemetry, automated control systems, electronic interfaces for control systems, downhole measurement and logging tools comprising sensors, data telemetry components, and connectivity devices for establishing downhole networks, namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface decoder and encoder software, surface antenna rods, data collection, data reporting, and system control firmware and software for oil and gas exploration and production; repair and maintenance of software for use in oil and gas exploration and production, including surface decoder and encoder software, and data collection, data reporting, and system control firmware and software

Abrégé

A method for establishing downlink telemetry communication to a downhole system involves placing into a drillstring a telemetry transcoder, and advancing the drillstring so the telemetry transcoder is below the surface. The method then transmits downlink EM telemetry signals from surface equipment. These signals are received at the telemetry transcoder which retransmits the signals as mud pulse signals. The mud pulse signals are received at the downhole system.

Classes IPC  ?

• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits
• E21B 47/26 - Stockage des données en fond de puits, p. ex. dans une mémoire ou sur un support d'enregistrement

Abrégé

A telemetry method transmits data by MP telemetry to a telemetry relay system which retransmits the data by EM telemetry. The method avoids the need to incorporate MP telemetry pressure transducers into rig equipment and permits telemetry from regions unfavorable for EM telemetry because of depth and/or characteristics surrounding formations.

Classes IPC  ?

• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits
• E21B 47/02 - Détermination de l'inclinaison ou de la direction
• E21B 4/02 - Moyens d'entraînement de type rotatif par fluide

Abrégé

Data is communicated from sensors at a downhole location near a drill bit to surface equipment. Communication to the surface equipment may be direct or may pass through a series of nodes. The nodes in some cases are intelligently reconfigured to achieve desired data rates, achieve power management goals, and/or compensate for failed nodes.

Classes IPC  ?

• G01V 3/00 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/04 - Mesure de la profondeur ou du niveau du liquide

Abrégé

A telemetry system with a plurality of controllers and telemetry systems, where the controllers are configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system.

Classes IPC  ?

• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits
• E21B 47/024 - Détermination de l'inclinaison ou de la direction des dispositifs dans le trou de forage
• E21B 49/00 - Test pour déterminer la nature des parois des trous de forageEssais de couchesProcédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits
• E21B 47/06 - Mesure de la température ou de la pression

Abrégé

A component mounting apparatus for holding a rigid component in a downhole bore or a downhole collar based application includes a first body including first and second parallel spaced apart component holders disposed in a first common plane and a first support connecting the component holders together. The first and second parallel spaced apart component holders are operable to receive and grip a rigid component between the first and second parallel spaced apart component holders. Various component mounting assemblies and configurations may be realized using the component mounting apparatus described. The component mounting apparatus and various mounting assemblies may be used to mount a printed circuit board in a cylindrical enclosure or tubular housing, for example.

Classes IPC  ?

• H05K 7/14 - Montage de la structure de support dans l'enveloppe, sur cadre ou sur bâti
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire

Abrégé

A downhole system comprises a main sensor, such as a gamma sensor, and a backup sensor. The backup sensor may be of a different type from the main sensor. In some embodiments the backup sensor is a high reliability sensor that may have a different sensitivity from the main sensor. The system operates both the main and backup sensors and generates calibration data for the backup sensor. If the main sensor fails the calibration data may be applied to process data from the backup sensor to yield an estimate of the data that the main sensor would have yielded if it had remained operational. The calibration data may compensate for temperature variations and/or temporal drift, for example.

Classes IPC  ?

• G01V 5/12 - Prospection ou détection au moyen de rayonnement ionisant, p. ex. de la radioactivité naturelle ou provoquée spécialement adaptée au carottage en utilisant des sources de radiation nucléaire primaire ou des rayons X en utilisant des sources de rayons gamma ou de rayons X
• G01V 13/00 - Fabrication, étalonnage, nettoyage ou réparation des instruments ou dispositifs couverts par les groupes

Abrégé

A fluid pressure pulse generator for a downhole telemetry tool comprising a stator and a rotor. The stator has a stator body and a plurality of radially extending stator projections spaced around the stator body, with adjacently spaced stator projections defining stator flow channels extending therebetween. The rotor has a rotor body and a plurality of radially extending rotor projections spaced around the rotor body, with adjacently spaced rotor projections defining rotor flow channels extending therebetween. The rotor projections are axially adjacent the stator projections. The rotor is rotatable relative to the stator and is configured to oscillate from an open flow position an equal span of clockwise and counter clockwise rotation to first and second restricted flow positions. In the open flow position the rotor projections align with the stator projections with an axial central line of the stator projections circumferentially offset from an axial central line of the rotor projections and the rotor flow channels are in fluid communication with the stator flow channels so that drilling fluid flows through the fluid pressure pulse generator apparatus. In the first and second restricted flow positions the rotor projections are in fluid communication with the stator flow channels to create a pressure pulse in the drilling fluid flowing through the fluid pressure pulse generator apparatus. The equal span of clockwise and counter clockwise rotation is selected so that a gap is formed between the rotor projections and the stator projections in at least one of the first and second restricted flow positions for flow of drilling fluid therethrough and a greater proportion of the rotor projections is in fluid communication with the stator flow channels in one of the first and second restricted flow positions than in the other of the first and second restricted flow positions. The fluid pressure pulse generator creates pressure pulses with different pulse heights through symmetrical rotation of the rotor relative to the stator.

Classes IPC  ?

• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits
• E21B 34/08 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits sensibles à l'écoulement ou à la pression du fluide obtenu
• G01V 1/52 - Détails de structure

Abrégé

A downhole system has a plurality of telemetry systems and a control system configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system and how the information is to be transmitted on the given telemetry system.

Classes IPC  ?

• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/14 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques
• H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie
• E21B 7/04 - Forage dirigé
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

Methods, techniques, and systems for transmitting a data frame of an electromagnetic (EM) telemetry signal to or from a downhole location can be performed using multi-channel transmissions in which at least two different channels at two different frequencies are used to send a long header and the data frame. At least a portion of the long header is transmitted at a first frequency, and at least a portion of the data frame and any remaining portion of the long header not transmitted at the first frequency are transmitted at one or more additional frequencies different from each other and the first frequency. In one example, only two channels are used: one channel is used to transmit all of the long header, another channel is used to transmit all of the data frame, and either of the channels is used to transmit an identifier identifying the type of the data frame.

Classes IPC  ?

• H04J 9/00 - Systèmes multiplex dans lesquels chaque canal est représenté par un type différent de modulation de la porteuse
• H04L 5/06 - Canaux caractérisés par le type de signal les signaux étant représentés par différentes fréquences
• H04L 7/06 - Commande de vitesse ou de phase au moyen de signaux de synchronisation les signaux de synchronisation différant des signaux d'information en amplitude, polarité ou fréquence
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• G08C 19/14 - Systèmes de transmission de signaux électriques dans lesquels le signal transmis est la fréquence ou la phase d'un courant alternatif utilisant une combinaison de fréquences fixes

Abrégé

A fluid pressure pulse generator for a downhole telemetry tool comprising a stator and a rotor. The stator comprises a stator body and a plurality of radially extending stator projections spaced around the stator body, whereby adjacently spaced stator projections define stator flow channels extending therebetween. The rotor comprises a rotor body and a plurality of radially extending rotor projections spaced around the rotor body. The rotor projections are axially adjacent to the stator projections and the rotor is rotatable relative to the stator such that the rotor projections move in and out of fluid communication with the stator flow channels to create fluid pressure pulses in fluid flowing through the stator flow channels. The rotor projections may be positioned downhole of the stator projections and include a self-correction mechanism to move the rotor to an open flow position where the rotor projections are out of fluid communication with the stator flow channels if the telemetry tool fails. The stator body may be configured to fixedly attach to a pulser assembly of the downhole telemetry tool and the rotor may be configured to fixedly attach to a driveshaft of the pulser assembly with the driveshaft and/or the rotor body received within the bore of the stator body such that the stator projections are positioned between the pulser assembly and the rotor projections.

Classes IPC  ?

• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

A fluid pressure pulse generator apparatus for a telemetry tool comprising a stator and a rotor. Rotor projections are axially adjacent and rotatable relative to stator projections between an open flow position where the rotor projections axially align with the stator projections and a restricted flow position where the rotor projections axially align with the stator flow channels to create fluid pressure pulses in fluid flowing through the stator flow channels. At least one uphole radial face comprises a stopper portion which is uphole relative to at least a portion of the axially aligned downhole radial face and/or at least one downhole radial face comprises a stopper portion which is downhole relative to at least a portion of the axially aligned uphole radial face, such that the stopper portion limits the span of rotation of the rotor relative to the stator.

Classes IPC  ?

• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

A measurement-while-drilling system is integrated into a mud motor. The measurement-while-drilling system includes sensors which may include inclination and tool face sensors, for example, located near to the drill bit. Data from the near bit sensors is transmitted by way of telemetry, for example, EM telemetry. The mud motor may include a rotating electrical coupling which provides good electrical productivity between an uphole coupling of the mud motor and the rotating mandrel. The EM telemetry transmitter may include an electrically-insulating gap integrated with the mandrel of the mud motor.

Classes IPC  ?

• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 4/02 - Moyens d'entraînement de type rotatif par fluide

Abrégé

A gap sub assembly for electromagnetic telemetry used in downhole drilling is disclosed. The gap sub comprises a female part comprising a female mating section and a male part comprising a male mating section. The male mating section is matingly received within the female mating section and electrically isolated therefrom. One or more electrically insulating bodies secure the male part axially and torsionally relative to the female part. The electrically insulating bodies also electrically isolate the male part from the female part. The electrically insulating bodies can be installed through apertures in the female part or at least some of the electrically insulating bodies can be installed before the male mating section is inserted into the female mating section. The electrically insulating bodies can be held in place on the male mating section using a retention apparatus such as a ring, a scarf, pods or an adhesive.

Classes IPC  ?

• E21B 17/04 - AccouplementsJoints entre tige et trépan, ou entre tiges
• E21B 17/042 - AccouplementsJoints entre tige et trépan, ou entre tiges filetés
• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio
• H01B 17/38 - Accessoires, garniture, p. ex. capuchons, capotsÉléments de fixation prévus à cet effet
• H01B 3/12 - Isolateurs ou corps isolants caractérisés par le matériau isolantEmploi de matériaux spécifiés pour leurs propriétés isolantes ou diélectriques composés principalement de substances inorganiques céramiques

Abrégé

A drill string section receives an electronics package. A flow channel extends through an aperture in the electronics package. The flow channel carries a flow of drilling fluid through the drill string section. The flow channel is sealed to a body of the drill string section. The electronics package need not be pressure-rated.

Classes IPC  ?

• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• E21B 17/02 - AccouplementsJoints
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage

Abrégé

A drill string section includes one or two tool joints that are removable from a body. Tool joints with different thread configurations may be interchangeably used with the same body. The tool joints have a compact construction that can facilitate making the drill string section short. The body overlaps with threads of one or both of the tool joints. The drill string section has non-exclusive application between a mud motor and a drill bit.

Classes IPC  ?

• E21B 17/02 - AccouplementsJoints
• E21B 17/03 - AccouplementsJoints entre la tige ou le tube de forage et le moteur de forage, p. ex. entre la tige de forage et le marteau
• E21B 17/04 - AccouplementsJoints entre tige et trépan, ou entre tiges
• E21B 17/042 - AccouplementsJoints entre tige et trépan, ou entre tiges filetés
• E21B 17/043 - AccouplementsJoints entre tige et trépan, ou entre tiges filetés avec moyens de verrouillage
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage

Abrégé

A gap sub has electrically-conductive parts held together by electrical insulators which engage in channels formed in the parts. The electrical insulators hold the parts in a spaced-apart electrically-insulated relationship. In some embodiments, the electrical insulators are removable to allow separation of the parts. An insulating oil or other fluid may fill the gap.

Classes IPC  ?

• E21B 17/02 - AccouplementsJoints
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• E21B 17/042 - AccouplementsJoints entre tige et trépan, ou entre tiges filetés
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
• E21B 4/02 - Moyens d'entraînement de type rotatif par fluide

Abrégé

A jig and method useful for coupling and/or uncoupling drill string sections. In some embodiments, the jig comprises a body having an outer surface for engaging a torqueing tool and a cavity extending from a first end to a second end of the body and an engagement means at the first end of the body. The engagement means may be dimensioned to non-rotationally engage an outer surface of a first end of a drill string section and the cavity may be sized to fit about a drill string section.

Classes IPC  ?

• E21B 3/04 - Tables de rotation
• E21B 19/16 - Branchement ou débranchement des accouplements de tubes ou de joints
• E21B 17/042 - AccouplementsJoints entre tige et trépan, ou entre tiges filetés

Abrégé

Methods and systems for testing connectivity in an EM telemetry system for transmission of a ground originating uplink EM telemetry signal. The methods and systems comprise a switch coupled to the link and configured to selectively connect the link to a test signal generator or a signal receiver, the test signal generator configured to generate a test signal and to supply it to a ground conductor, and the current within the link is measured to determine whether the link and ground conductor can properly transmit the ground originating uplink EM telemetry signal.

Classes IPC  ?

• G01V 3/00 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou pour obtenir des valeurs mesurées

Produits et services

(1) Hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools, gap subs, and parts and fittings for all of the foregoing goods; kits comprising hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools; kits comprising hardware and equipment for oil and gas exploration and production, namely gap subs. (2) Hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters, data telemetry receivers, surface equipment for receiving uplink data telemetry, automated control systems comprising electrical control modules, data collection, data reporting and system control firmware and software, electronic display interfaces for control systems, pulse valves, short hop transmitters and receivers, connectivity devices for establishing downhole networks namely, transceivers, repeaters, hubs, bridges, switches, routers and gateways, downhole measurement and logging tools comprising sensors and data telemetry components, and parts and fittings for all of the foregoing goods; computer software for collecting, processing, reporting, and reviewing data collected by downhole sensors in hardware and equipment for oil and gas exploration and production; kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters; kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry receivers; kits comprising hardware and equipment for oil and gas exploration and production, namely surface equipment for receiving uplink data telemetry; kits comprising hardware and equipment for oil and gas exploration and production, namely automated control systems comprising electrical control modules, data collection, data reporting and system control firmware and software; kits comprising hardware and equipment for oil and gas exploration and production, namely electronic display interfaces for control systems; kits comprising hardware and equipment for oil and gas exploration and production, namely pulse valves; kits comprising hardware and equipment for oil and gas exploration and production, namely short hop transmitters and receivers; kits comprising hardware and equipment for oil and gas exploration and production, namely connectivity devices for establishing downhole networks namely, transceivers, repeaters, hubs, bridges, switches, routers and gateways; kits comprising hardware and equipment for oil and gas exploration and production, namely downhole measurement and logging tools comprising sensors and data telemetry components; kits comprising computer software for collecting, processing, reporting, and reviewing data collected by downhole sensors in hardware and equipment for oil and gas exploration and production. (1) Oil and gas well drilling services; oil and gas well production and completion monitoring services; rental of hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters, data telemetry receivers, centralizers for downhole tools, gap subs, surface equipment for receiving uplink data telemetry, automated control systems comprising electrical control modules, data collection, data reporting and system control firmware and software, electronic display interfaces for control systems, pulse valves, short hop transmitters and receivers, connectivity devices for establishing downhole networks namely, transceivers, repeaters, hubs, bridges, switches, routers and gateways, and downhole measurement and logging tools comprising sensors and data telemetry components; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry receivers; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely gap subs; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely surface equipment for receiving uplink data telemetry; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely automated control systems comprising electrical control modules, data collection, data reporting and system control firmware and software; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely electronic display interfaces for control systems; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely pulse valves; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely short hop transmitters and receivers; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely connectivity devices for establishing downhole networks namely, transceivers, repeaters, hubs, bridges, switches, routers and gateways; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely downhole measurement and logging tools comprising sensors and data telemetry components; repair, maintenance and cleaning of hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters, data telemetry receivers, centralizers for downhole tools, gap subs, surface equipment for receiving uplink data telemetry, automated control systems comprising electrical control modules, data collection, data reporting and system control firmware and software, electronic display interfaces for control systems, pulse valves, short hop transmitters and receivers, connectivity devices for establishing downhole networks, namely transceivers, repeaters, hubs, bridges, switches, routers and gateways, and downhole measurement and logging tools comprising sensors and data telemetry components; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry receivers; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely gap subs; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely surface equipment for receiving uplink data telemetry; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely automated control systems comprising electrical control modules, data collection, data reporting and system control firmware and software; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely electronic display interfaces for control systems; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely pulse valves; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely short hop transmitters and receivers; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely connectivity devices for establishing downhole networks namely, transceivers, repeaters, hubs, bridges, switches, routers and gateways; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely downhole measurement and logging tools comprising sensors and data telemetry components. (2) Providing downhole-to-surface, surface-to-downhole and downhole-to-downhole data telemetry and data processing for the oil and gas industry, namely guidance and geological feedback, telemetric communication and monitoring of data during oil and gas exploration and production. (3) Engineering services in the field of developing hardware, equipment and software for the oil and gas industry; custom design and development of hardware, equipment and software for the oil and gas industry; oil and gas well logging services; customer support services, namely troubleshooting in the nature of diagnosing problems with hardware and equipment for oil and gas exploration and production; tracking and analyzing data relating to the performance, reliability, location and troubleshooting of hardware and equipment for oil and gas exploration and production.

Abrégé

An assembly for use in subsurface drilling includes a downhole downhole probe supported by a centralizer. The centralizer comprises a tubular member that extends around the downhole probe. A wall of the centralizer is fluted to provide inward contact points that support the downhole probe and outward contact points that bear against a bore wall of a section of drill string. The downhole probe may be supported for substantially its entire length.

Classes IPC  ?

• E21B 17/10 - Protecteurs contre l'usureDispositifs de centrage
• E21B 17/16 - Masses-tiges
• E21B 23/01 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour ancrer les outils ou similaires
• E21B 23/02 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour verrouiller les outils ou autres éléments sur des supports ou dans des retraits entre sections adjacentes du tubage
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
• E21B 7/00 - Procédés ou matériels particuliers pour le forage
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

A method for sealing a gap sub wherein injected material is used to secure a seal member in a gap. The seal member is positioned in the gap, and the material is then injected into the gap and against the seal member, seating the seal member and securing it in place once the material solidifies. The injected material is preferably electrically non-conductive.

Classes IPC  ?

• F16J 15/02 - Joints d'étanchéité entre surfaces immobiles entre elles
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• F16J 15/06 - Joints d'étanchéité entre surfaces immobiles entre elles avec garniture solide comprimée entre les surfaces à joindre
• E21B 17/02 - AccouplementsJoints

Abrégé

A sealing member or gasket for sealing a space between two adjacent surfaces, the sealing member having at least one non-helical circumferential extension or ridge configured for size-on-size or press fit engagement with a corresponding recess in at least one of the surfaces being sealed. The sealing member can be formed by molding followed by insertion between the two adjacent surfaces, or by positioning the surfaces adjacent one another and then injecting or pouring the sealing member material into the space and allowing it to solidify in place.

Classes IPC  ?

• F16J 15/10 - Joints d'étanchéité entre surfaces immobiles entre elles avec garniture solide comprimée entre les surfaces à joindre par garniture non métallique
• F16L 17/025 - Raccords avec garnitures adaptées à une étanchéité par pression de fluide avec segments d'étanchéité disposés entre la surface extérieure du tuyau et la surface intérieure d'un manchon ou d'une douille les segments d'étanchéité comportant des nervures radiales
• F16L 21/02 - Raccords avec manchon ou douille avec segments d'étanchéité élastiques entre le tuyau et le manchon ou entre le tuyau et la douille, p. ex. avec des segments roulants ou autres segments profilés préfabriqués
• F16J 15/06 - Joints d'étanchéité entre surfaces immobiles entre elles avec garniture solide comprimée entre les surfaces à joindre
• F16J 15/14 - Joints d'étanchéité entre surfaces immobiles entre elles au moyen d'un matériau en grains ou en matière plastique ou d'un fluide

Abrégé

A downhole apparatus for measuring drilling fluid characteristics. The downhole apparatus may comprise one or more sensors located within a housing. The sensors may include one or more of an imaging device, a resistivity/conductivity sensor, a temperature sensor, a pressure sensor, a flowmeter and a fluid density sensor. The downhole apparatus may also include a controller for receiving measurements and/or determining optimal electromagnetic telemetry transmission settings. The downhole apparatus may also comprise a transmitter for transmitting the measurements and/or the optimal electromagnetic transmission settings. The downhole apparatus may be operated to determine optimal transmission settings for an electromagnetic telemetry system. Optimal transmission settings may include settings relating to one or more of frequency, amplitude, voltage, current, and power.

Classes IPC  ?

• G01V 3/00 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage

Abrégé

A measurement-while-drilling (MWD) telemetry system comprises a downhole MWD telemetry tool comprising a mud pulse (MP) telemetry unit and an electromagnetic (EM) telemetry unit. The MWD telemetry tool can be configured to transmit data in an EM-only telemetry mode using only the EM telemetry unit, in an MP-only mode using only the MP telemetry unit, or in a concurrent telemetry mode using both the EM and MP telemetry units concurrently. When transmitting data in the concurrent telemetry mode, the telemetry tool can be configured to transmit in a concurrent confirmation mode wherein the same telemetry data is transmitted by each of the EM and MP telemetry units, or in a concurrent shared mode wherein some of the telemetry data is transmitted by the EM telemetry unit, and the rest of the telemetry data is transmitted by the MP telemetry unit. The telemetry tool can be programmed to change its operating telemetry mode in response to a downlink command sent by an operator at surface.

Classes IPC  ?

• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage

Abrégé

Method and apparatus for transmitting data to or from a downhole tool while the tool is at or near the surface using a wireless data link. A downhole tool comprising a gap sub having a tubular section with first and second longitudinally spaced-apart electrically-conducting parts that are electrically isolated from each other. An electromagnetic telemetry transmitter is connected to apply a potential difference between the first and second electrically conductive parts. A single-wire bus provides a data connection between one of the first and second electrically conductive parts and a data processor.

Classes IPC  ?

• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio
• E21B 17/04 - AccouplementsJoints entre tige et trépan, ou entre tiges
• G08C 17/02 - Dispositions pour transmettre des signaux caractérisées par l'utilisation d'une voie électrique sans fil utilisant une voie radio

Abrégé

A device and method for retaining a sacrificial wear sleeve on the exterior of an in-pipe device such as an electronics package or probe. In one embodiment, the retention mechanism comprises a ring having a protuberance or lip extending parallel to and against the end of the sleeve, thus pressing the end of the sleeve against the external surface of the device. This has the advantage, in situations where fluids are flowing through the pipe and around the device, of reducing the risk of fluids moving beneath the sleeve and damaging it and/or the underlying device external surface. In another embodiment, the retention mechanism is of unitary construction with the device itself and comprises a protuberance or lip extending parallel to and against the end of the sleeve, thus pressing the end of the sleeve against the external surface of the device.

Classes IPC  ?

• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forageProtection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
• E21B 47/017 - Protection des instruments de mesure
• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio

Abrégé

A pressure compensation device for a downhole fluid pressure pulse generator comprising: a membrane sleeve; a membrane support with a bore for receiving a driveshaft, a central section which receives the membrane sleeve, a male mating section on each side, each having a groove extending around an external surface and at least one opening aligned with the groove; a pair of female mating components with a bore and a channel in an internal surface, each female mating component configured to mate with one of the male mating sections to axially clamp the membrane sleeve between the membrane support and the female mating components; and a pair of retaining rings each received between the male mating section groove and the female mating component channel, where the retaining rings are accessible through the opening in the male mating section and radially expandable into a space in the female mating component to unseat the retaining ring from the groove for removal.

Classes IPC  ?

• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits
• E21B 44/00 - Systèmes de commande automatique spécialement adaptés aux opérations de forage, c.-à-d. systèmes à fonctionnement autonome ayant pour rôle d'exécuter ou de modifier une opération de forage sans l'intervention d'un opérateur humain, p. ex. systèmes de forage commandés par ordinateurSystèmes spécialement adaptés à la surveillance de plusieurs variables ou conditions de forage
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits

Abrégé

A device and method for securing a sleeve (for sacrificial wear and/or electrical isolation) inside a conduit. In one embodiment, the retention device sits adjacent one end of the sleeve and comprises a ring having a protuberance or lip extending parallel to and against the end of the sleeve, thus pressing the end of the sleeve against the inner surface of the conduit. This has the advantage, in situations where fluids are flowing through the conduit, of reducing the risk of fluids moving behind the sleeve and collapsing it inwardly.

Classes IPC  ?

• F16L 57/06 - Protection des tuyaux ou d'objets de forme similaire contre les dommages ou les usures internes ou externes contre l'usure
• F16L 57/00 - Protection des tuyaux ou d'objets de forme similaire contre les dommages ou les usures internes ou externes
• F16L 58/02 - Protection des tuyaux ou des accessoires pour tuyaux contre la corrosion ou l'entartrage au moyen de revêtements internes ou externes
• F16L 58/10 - Revêtements caractérisés par les matériaux utilisés de caoutchouc ou de matériaux plastiques

Abrégé

A method for determining a rotational position of a rotor in a fluid pressure pulse generator of a downhole telemetry tool comprises: for at least one rotational position of the rotor, determining an expected pressure of a drilling fluid at the fluid pressure pulse generator that corresponds to the at least one rotational position; forming a rotor position map of rotor rotational positions and corresponding expected drilling fluid pressures from the at least one rotational position of the rotor and the corresponding determined expected pressure; measuring a pressure of the drilling fluid at the fluid pressure pulse generator, and determining the rotational position of the rotor at the measured pressure by associating the measured pressure to an expected pressure and corresponding rotor rotational position in the rotor position map.

Classes IPC  ?

• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits
• E21B 47/24 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits par des pulsations positives dans la boue de forage utilisant une vanne de restriction du débit dans la tige de forage

Abrégé

An electromagnetic telemetry system adjusts telemetry parameters which may include carrier frequency, signal amplitude and/or data encoding protocol to achieve reliable data transmission and to conserve power. In some embodiments, sweep signals transmit a range of carrier frequencies and the parameters are determined in part by analyzing the received sweep signals. In some embodiments, different parameters are selected automatically based on a mode of drilling.

Classes IPC  ?

• H04W 52/02 - Dispositions d'économie de puissance
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou pour obtenir des valeurs mesurées
• H04W 52/24 - Commande de puissance d'émission [TPC Transmission power control] le TPC étant effectué selon des paramètres spécifiques utilisant le rapport signal sur parasite [SIR Signal to Interference Ratio] ou d'autres paramètres de trajet sans fil
• H04B 17/318 - Force du signal reçu
• H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence

Abrégé

The embodiments described herein generally relate a downhole probe assembly incorporating a Bluetooth device for wirelessly transmitting electrical information between the downhole probe assembly and a surface electronic interface such as a computer when the probe assembly is above ground. The downhole probe assembly includes sensors for sensing downhole conditions; a controller in electrical communication with the sensors and configured to receive and process information from the sensors; a housing enclosing the one or more than one sensor and the controller; the Bluetooth device in electrical communication with the controller; and an end cap assembly fitted at one end of the housing. The end cap assembly partially surrounds the Bluetooth device and is configured for transmission of the electrical information therethrough. Also described is an end cap assembly for fitting to one end of a downhole probe assembly including a transmission module mated with and electrically connected to the Bluetooth device. The end cap assembly includes an end cap having an end cap mating section configured to mate with a mating section of the transmission module to form a chamber enclosing the Bluetooth device between the transmission module and the end cap. A known downhole probe assembly can be retrofitted with the Bluetooth device and end cap subassembly. The end cap subassembly is configured and adapted to promote signal transmission between the Bluetooth device and a surface computer or other electronic interface.

Classes IPC  ?

• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• H04W 84/18 - Réseaux auto-organisés, p. ex. réseaux ad hoc ou réseaux de détection

Abrégé

A range of apparatus and methods for providing local and long range data telemetry within a wellbore is described. These apparatus and methods may be combined in a wide variety of ways. In some embodiments data is transmitted across a gap in a drill string using signals of a higher frequency for which an electrical impedance of the gap or of a filter connected across the gap is low. Low-frequency EM telemetry signals may be applied across the gap. The gap and any filter connected across the gap present a high impedance to the low-frequency EM telemetry signals. The described technology may be applied for transferring sensor readings between downhole electrical packages. In some embodiments sensors are electrically connected across electrically insulating gaps in the drill string.

Classes IPC  ?

• G01V 3/00 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production

Abrégé

A method for selecting a drilling fluid pressure pulse transmission frequency in a downhole telemetry tool comprises: emitting a frequency sweep wave in a drilling fluid that comprises pressure pulses over a range of frequencies and over a period of time; measuring a pressure of the drilling fluid at the telemetry tool while the frequency sweep wave is being emitted; determining a signal strength at each frequency in the range of frequencies from the measured pressure of the drilling fluid; and selecting at least one frequency in the range of frequencies that meets a selected signal strength threshold as a telemetry signal transmission frequency for the telemetry tool. The method can further comprise encoding the at least one selected frequency in a header message and transmitting the header message to surface using pressure pulse telemetry, and then encoding telemetry data into a pressure pulse telemetry signal and transmitting the pressure pulse telemetry signal to surface at the at least one selected frequency.

Classes IPC  ?

• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage

Abrégé

A measurement-while-drilling (MWD) telemetry system comprises a downhole MWD telemetry tool comprising a mud pulse (MP) telemetry unit and an electromagnetic (EM) telemetry unit. The MWD telemetry tool can be configured to transmit data in an EM-only telemetry mode using only the EM telemetry unit, in an MP-only mode using only the MP telemetry unit, or in a concurrent telemetry mode using both the EM and MP telemetry units concurrently. When transmitting data in the concurrent telemetry mode, the telemetry tool can be configured to transmit in a concurrent confirmation mode wherein the same telemetry data is transmitted by each of the EM and MP telemetry units, or in a concurrent shared mode wherein some of the telemetry data is transmitted by the EM telemetry unit, and the rest of the telemetry data is transmitted by the MP telemetry unit. The telemetry tool can be programmed to change its operating telemetry mode in response to a downlink command sent by an operator at surface.

Classes IPC  ?

• G01V 3/00 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation
• E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits