A drill bit comprises a bit body having a body face and a plurality of blades each extending from the bit body from a root portion adjacent the body face to a tip portion defining a cutting region, each blade having a leading face and a trailing face. The drill bit further comprises at least one outlet port disposed adjacent the leading face of at least one blade at a location between the root and tip portions of said at least one blade, the at least one outlet port for directing drilling fluid towards the cutting region of the at least one blade.
A drill bit comprises a bit body having a body face and a plurality of blades each extending from the bit body from a root portion adjacent the body face to a tip portion defining a cutting region, each blade having a leading face and a trailing face. The drill bit further comprises at least one outlet port disposed adjacent the leading face of at least one blade at a location between the root and tip portions of said at least one blade, the at least one outlet port for directing drilling fluid towards the cutting region of the at least one blade.
A drill bit comprises a bit body having a body face and a plurality of blades each extending from the bit body from a root portion adjacent the body face to a tip portion defining a cutting region, each blade having a leading face and a trailing face. The drill bit further comprises at least one outlet port disposed adjacent the leading face of at least one blade at a location between the root and tip portions of said at least one blade, the at least one outlet port for directing drilling fluid towards the cutting region of the at least one blade.
A downhole tool comprising: an outer housing; a flow path arranged to permit fluid flow through the downhole tool; a tool component at least partially located within the outer housing, the tool component being arranged to be movable from a first position to a second position; wherein the tool component or a part thereof is configured to be rotatable relative to the outer housing; an actuation mechanism configured to cause the tool component to move from the first position to the second position; wherein the actuation mechanism is a blocking assembly configured to move from a first arrangement to a second arrangement in response to a change in the flow of fluid through the downhole tool, wherein in the first arrangement the flow path is open and fluid can flow through the flow path and in the second arrangement the blocking assembly is arranged to restrict fluid flow through the flow path; wherein the tool component is configured to move from the first position to the second position under the action of fluid pressure in response to the blocking assembly moving to the second arrangement.
E21B 10/20 - Trépans à organes coupants roulants, p. ex. à molettes caractérisés par des parties amovibles ou réglables, p. ex. des bras ou des arbres
E21B 10/32 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles
E21B 10/34 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles du type à organe coupant roulant
A wellbore rod inspection system is provided. The wellbore rod inspection system comprises a conveyor configured to convey a wellbore rod for inspection; a coil arrangement configured to produce a magnetic field to magnetize the wellbore rod; and a sensor assembly comprising radially spaced sensors. The sensor assembly is configured to detect magnetic flux leakage from the magnetized wellbore rod. The wellbore rod inspection system further comprises a processor configured to process the detected magnetic flux leakage to detect faults in the wellbore rod.
G01N 27/90 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant des variables magnétiques pour rechercher la présence des criques en utilisant les courants de Foucault
E21B 47/08 - Mesure du diamètre ou des dimensions correspondantes des trous de forage
E21B 19/00 - Manipulation de tiges, tubages, tubes ou autre objets analogues à l'extérieur du trou de forage, p. ex. dans la tour de forageAppareils pour faire avancer les tiges ou les câbles
G01N 27/83 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant des variables magnétiques pour rechercher la présence des criques en étudiant des champs magnétiques de dispersion
6.
DRILL BIT, DOWNHOLE TUBULAR STRING AND METHODS FOR OPERATING THE SAME
A drill bit (10) for drilling a bore, the drill bit comprising: a housing (28); a primary cutting structure (16); an activation member (30) arranged within the housing such that the activation member can move axially under an action of fluid (160) flowing through the bit; an indexer (32) configured to control axial movement of the activation member between a first (66), second (68, 70) and third (72) axial position; wherein the indexer is configured such that the activation member can be selectively moved into the third position in accordance with a variation of a flow of fluid through the drill bit; the drill bit further comprising: a deployable assembly (18) at least partially located within the housing, the deployable assembly comprising a deployable structure and being arranged to be movable from a retracted position, in which the deployable structure is recessed with respect to the primary cutting structure, towards the primary cutting structure, to a deployed position; wherein the drill bit is arranged such that the deployable assembly is movable from the retracted position towards the deployed position, under an action of fluid pressure in response to the activation member moving to the third axial position.
E21B 10/32 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles
E21B 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
7.
MAGNETIC FLUX LEAKAGE TESTING DEVICE AND ASSOCIATED METHOD FOR IDENTIFYING AND DIFFERENTIATING DEFECTS IN METALLIC PLATES
A testing device for detecting a defect in a tank plate, such a plate extending through a thickness from an upper proximal surface to a lower distal surface, the device comprising:a first testing unit configured to detect a defect in a proximal surface of a plate; a second testing unit configured to detect a defect through a thickness from a proximal surface to a distal surface of a plate;and wherein the device is configured to use data output from the first testing unit together with data output from the second testing unit so as to identify and differentiate between a defect in a proximal surface of a plate and a defect in a distal surface of that plate. Methods and testing units for use with, and in, such devices are also presented.
G01N 27/87 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant des variables magnétiques pour rechercher la présence des criques en étudiant des champs magnétiques de dispersion en utilisant des sondes
A downhole tool comprising: a housing (24); a first piston (28) arranged within the housing such that the first piston can move axially under the action of fluid flowing through the tool; an indexer (32) configured to control axial movement of the first piston (28) between a first, second and third axial position; wherein the indexer is configured such that the first piston can be selectively moved into the third position in accordance with a variation of a flow of fluid through the tool; a second piston (34) movable between a closed position in which fluid flowing through the tool is restricted from communicating with an activation chamber (36) and an open position in which fluid flowing through the tool is permitted to communicate with the activation chamber (36); wherein the second piston is configured to move between the closed position and the open position in response to the first piston moving to the third axial position.
E21B 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
E21B 23/04 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage mis en œuvre à l'aide de moyens fluides, p. ex. actionnés par explosion
E21B 34/10 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par un fluide de commande provenant de l'extérieur du trou de forage
E21B 34/14 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par le mouvement des outils, p. ex. obturateurs à manchons actionnés par des pistons ou par des outils à câble
E21B 10/26 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs
E21B 10/32 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles
E21B 10/34 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles du type à organe coupant roulant
9.
DOWNHOLE DEVICES AND ASSOCIATED APPARATUS AND METHODS
A drill bit (10) for drilling a bore, the drill bit comprising: an outer housing (24); a primary cutting structure (18) defining a cutting plane of a first diameter; a flow path (42, 44) arranged to let drilling fluid flow through the drill bit; and a deployable blade assembly (38) at least partially located within the outer housing, the deployable blade assembly comprising a cutting structure and being arranged to be axially movable from a first position, in which the deployable cutting structure is recessed with respect to the primary cutting structure, towards the cutting plane, to a second position; wherein when the deployable blade assembly is in the second position, the deployable cutting structure defines a cutting diameter which is less than or equal to the first diameter.
E21B 10/20 - Trépans à organes coupants roulants, p. ex. à molettes caractérisés par des parties amovibles ou réglables, p. ex. des bras ou des arbres
E21B 10/26 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs
E21B 10/32 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles
E21B 10/42 - Trépans rotatifs du type racleur comportant des dents, des lames ou des organes de coupe similaires, p. ex. du type à fourche, en queue de poisson
E21B 10/60 - Trépans caractérisés par des canaux ou des buses pour les fluides de forage
E21B 10/62 - Trépans caractérisés par des parties, p. ex. des éléments coupants, amovibles ou réglables
A rotary downhole tool, for example in the form of a drill bit, is described that includes a tool body, the body defining a gauge region, and at least one gauge roller rotatably mounted to the body.
E21B 7/06 - Modification de la direction du trou de forage
E21B 10/42 - Trépans rotatifs du type racleur comportant des dents, des lames ou des organes de coupe similaires, p. ex. du type à fourche, en queue de poisson
E21B 10/55 - Trépans caractérisés par des parties résistant à l'usure, p. ex. des diamants rapportés le trépan étant du type racleur, p. ex. trépan du type à fourche comportant des éléments de coupe préformés
11.
APPARATUS COMPRISING A MICROWAVE PROCESSING CHAMBER
A processing apparatus is described that comprises a microwave processing chamber (20), a rigid, rotatable feed wheel (16) rotatable about an axis of rotation such that a part of the feed wheel (16) is located within the processing chamber (20), a feed device (26) operable to deposit materials to be processed onto the feed wheel (16), and an output (30) into which processed materials from the feed wheel (16) can be deposited, in use.
B01J 19/12 - Procédés utilisant l'application directe de l'énergie ondulatoire ou électrique, ou un rayonnement particulaireAppareils à cet usage utilisant des radiations électromagnétiques
C10B 19/00 - Chauffage électrique des fours à coke
C10B 53/06 - Distillation destructive spécialement conçue pour des matières premières solides particulières ou sous forme spéciale de schistes ou roches bitumineux
12.
APPARATUS COMPRISING A MICROWAVE PROCESSING CHAMBER
A processing apparatus is described that comprises a microwave processing chamber (20), a rigid, rotatable feed wheel (16) rotatable about an axis of rotation such that a part of the feed wheel (16) is located within the processing chamber (20), a feed device (26) operable to deposit materials to be processed onto the feed wheel (16), and an output (30) into which processed materials from the feed wheel (16) can be deposited, in use.
B01J 19/12 - Procédés utilisant l'application directe de l'énergie ondulatoire ou électrique, ou un rayonnement particulaireAppareils à cet usage utilisant des radiations électromagnétiques
C10B 53/06 - Distillation destructive spécialement conçue pour des matières premières solides particulières ou sous forme spéciale de schistes ou roches bitumineux
C10B 19/00 - Chauffage électrique des fours à coke
An under-reaming tool comprises a body and a plurality of extendable cutters mounted on the body. The under-reaming tool is configured to be cycled between a first configuration in which the cutters are retracted and a second configuration in which the cutters are movable between retracted and extended positions. The under-reaming tool is configured to prevent extension of the cutters by an external fluid in the first and/or second configuration/s.
E21B 10/32 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles
E21B 23/04 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage mis en œuvre à l'aide de moyens fluides, p. ex. actionnés par explosion
E21B 7/28 - Élargissement des trous forés, p. ex. par forage à contresens
E21B 17/10 - Protecteurs contre l'usureDispositifs de centrage
E21B 29/00 - Découpage ou destruction de tubes, packers, bouchons ou câbles, situés dans les trous de forage ou dans les puits, p. ex. découpage de tubes endommagés, de fenêtresDéformation des tubes dans les trous de forageRemise en état des tubages de puits sans les retirer du sol
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
14.
FABRICATION METHOD USING FOAM ELEMENTS, AND STRUCTURES FABRICATED USING THE METHOD
A method of fabrication of a structure (10) is described, the structure comprising an open cell foam element (12) of metallic, refractory, ceramic and/or diamond form, and/or provided with one or more metallic, refractory, ceramic and/or diamond material coatings, the element (12) defining a plurality of interconnected cells (14), and a material (16) located within the cells (14), the material (16) having been treated, in situ, by sintering and/or infiltration, to form a continuous mesh or lattice structure (18) extending within and through the cells (14) of the open cell foam element (12). The method comprises the steps of providing an open cell foam element (12) of metallic, diamond, ceramic and/or refractory material form, and/or having one or more metallic, diamond, ceramic and/or refractory material coatings, the foam element (12) defining a plurality of interconnected cells (14), locating a material (16) within the cells (14), and treating the material16, in situ, by sintering and/or infiltration, to form a continuous mesh or lattice structure (18) extending within and through the cells (14) of the open cell foam element (12). Structures (10) fabricated using the method are also described.
C22C 29/08 - Alliages à base de carbures, oxydes, borures, nitrures ou siliciures, p. ex. cermets, ou d'autres composés métalliques, p. ex. oxynitrures, sulfures à base de carbures ou de carbonitrures à base de carbures mais ne contenant pas d'autres composés métalliques à base de carbure de tungstène
A downhole apparatus (10) that is selectively reconfigurable between a first configuration and a second configuration. The downhole apparatus comprises an actuator (24) for controlling the reconfiguration between the first and second configurations. The actuator comprises a rotationally-activatable device (26), the rotationally-activatable device being substantially unaffected by gravitational orientation such that the apparatus is suitable for use in at least one of: a deviated bore, and a horizontal bore.
E21B 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
E21B 29/00 - Découpage ou destruction de tubes, packers, bouchons ou câbles, situés dans les trous de forage ou dans les puits, p. ex. découpage de tubes endommagés, de fenêtresDéformation des tubes dans les trous de forageRemise en état des tubages de puits sans les retirer du sol
E21B 37/02 - Dispositifs de raclage spécialement adaptés à cet effet
E21B 41/00 - Matériel ou accessoires non couverts par les groupes
E21B 49/10 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage ou dans les puits utilisant des appareils d'échantillonnage ou de test de fluide venant s'appliquer latéralement contre la paroi du puits
E21B 7/28 - Élargissement des trous forés, p. ex. par forage à contresens
E21B 10/32 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles
A selective downhole actuator comprising at least a first actuator position, a second actuator position and a third actuator position. The selective downhole actuator is reconfigurable between the first actuator position and the second actuator position. The selective actuator is selectively reconfigurable to the third actuator position by varying an operating parameter during a transition of the selective downhole actuator between the first and second actuator positions.
E21B 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
A rotary downhole tool, for example in the form of a drill bit, is described that comprises a tool body (1), the body (1) defining a gauge region (5), and at least one gauge roller (6) rotatably mounted to the body (1).
A manufacturing method comprises the steps of providing a mould (10) containing a matrix material (16), providing an infiltrant material (20) arranged so that, when molten, the infiltrant material (20) will infiltrate into the matrix material (16), and heating the matrix material (16) and the infiltrant material (20) by induction heating using an induction (heater 22) including a first coil (24) and a second coil (26), wherein the first and second coils (24), 26) are energised independently of one another to allow increased control over the heating of different parts of the matrix material (16) and infiltrant material (20) within the mould (10).
B22F 7/06 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de pièces ou objets composés de parties différentes, p. ex. pour former des outils à embouts rapportés
19.
DOWNHOLE MOTOR, DRILL STRING PROVIDED WITH SUCH A MOTOR AND METHOD OF RELEASING A STUCK DRILL BIT ATTACHED TO SUCH A MOTOR
A downhole motor (107) which comprises a stator housing(108), a rotor assembly (106) rotatable relative to said stator housing, and an arrangement for enabling, in use, a drill bit connected to the rotor assembly of said downhole motor to be rotated by rotating a drill string connected to said stator housing, wherein said arrangement comprises a unidirectional clutch (117) disposed between said rotor assembly and said stator housing and having at least one pawl which can be displaced between an inoperative position adjacent said stator housing and an operative position in which rotation of said stator housing by said drill string in one sense is transmitted to said rotor assembly via said at least one pawl, means biasing said at least one pawl towards said operative position, means retaining said at least one pawl in its inoperative position, and means which, when sufficient pulling force is applied to said drill string, will cause said means retaining said at least one pawl to release said at least one pawl and enable said at least one pawl to move into its operative position.
A vibration assembly of a drilling tool for drilling a wellbore penetrating a subterranean formation is disclosed. The downhole drilling tool includes a drill string, a bottomhole assembly and a drill bit. The vibration assembly includes a housing (334a) operatively connectable to the bottomhole assembly, expanders (122) positionable in the housing and radially extendable and retractable thereabout, and a radial vibrator (comprising mandrel (446), enlarger spring (48), cam portion (458) and vibration spring (570) operatively connectable to the expanders to vibrationally move the expanders against the wall of the wellbore whereby movement of the downhole tool is altered during drilling.
E21B 7/24 - Forage utilisant des moyens vibrants ou oscillants, p. ex. des masses déséquilibrées
E21B 7/28 - Élargissement des trous forés, p. ex. par forage à contresens
E21B 10/32 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles
E21B 28/00 - Dispositions pour la génération de vibrations pour les trous de forage ou les puits, p. ex. pour activer la production
A cutting element comprises a primary cutter including a first table of a hard material bonded to a first substrate of less hard form, the first substrate of the primary cutter having a recess formed therein in which a secondary cutter is located, the secondary cutter comprising a second table of a hard material bonded to a second substrate of less hard material, the first and second tables being spaced apart from one another by at least part of the first substrate.
E21B 10/567 - Parties rapportées du type bouton comportant des éléments de coupe préformés montés sur un support distinct, p. ex. parties rapportées polycristallines
E21B 10/573 - Parties rapportées du type bouton comportant des éléments de coupe préformés montés sur un support distinct, p. ex. parties rapportées polycristallines caractérisés par les détails du support, p. ex. la structure du substrat ou l'interface entre le substrat et l'élément de coupe
B24D 18/00 - Fabrication d'outils pour meuler, p. ex. roues, non prévue ailleurs
C22C 1/05 - Mélanges de poudre métallique et de poudre non métallique
B24D 3/00 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants
B24D 3/10 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants les constituants étant utilisés comme agglomérants et étant essentiellement inorganiques métalliques à structure poreuse ou alvéolaire, p. ex. pour utiliser avec des diamants en tant qu'abrasifs
B24D 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
C22C 29/06 - Alliages à base de carbures, oxydes, borures, nitrures ou siliciures, p. ex. cermets, ou d'autres composés métalliques, p. ex. oxynitrures, sulfures à base de carbures ou de carbonitrures à base de carbures mais ne contenant pas d'autres composés métalliques
C22C 29/14 - Alliages à base de carbures, oxydes, borures, nitrures ou siliciures, p. ex. cermets, ou d'autres composés métalliques, p. ex. oxynitrures, sulfures à base de borures
A cutting element comprises a table of superhard material bonded to a substrate, wherein the table defines a cutting edge and has a chamfered peripheral edge, and a groove in a sidewall of the cutting element passes through the chamfered peripheral edge, so as to reduce the depth of the chamfer at the location of the groove.
E21B 10/567 - Parties rapportées du type bouton comportant des éléments de coupe préformés montés sur un support distinct, p. ex. parties rapportées polycristallines
E21B 10/54 - Trépans caractérisés par des parties résistant à l'usure, p. ex. des diamants rapportés le trépan étant du type racleur, p. ex. trépan du type à fourche
h) thereon. The first row is configured to achieve suitable performance when the drill bit drills in concentric mode. The second row of cutters is configured to improve the performance of the first row of cutters when the drill bit drills in eccentric mode. For example, the second row increases depth of cut and wear resistance in eccentric mode drilling. The drill bit may be mounted on a bent motor (120) used in directional drilling.
E21B 4/00 - Moyens d'entraînement dans le trou de forage
E21B 10/43 - Trépans rotatifs du type racleur comportant des dents, des lames ou des organes de coupe similaires, p. ex. du type à fourche, en queue de poisson caractérisés par la disposition des dents ou des autres éléments coupants
E21B 10/55 - Trépans caractérisés par des parties résistant à l'usure, p. ex. des diamants rapportés le trépan étant du type racleur, p. ex. trépan du type à fourche comportant des éléments de coupe préformés
E21B 10/42 - Trépans rotatifs du type racleur comportant des dents, des lames ou des organes de coupe similaires, p. ex. du type à fourche, en queue de poisson
E21B 10/54 - Trépans caractérisés par des parties résistant à l'usure, p. ex. des diamants rapportés le trépan étant du type racleur, p. ex. trépan du type à fourche
A drill bit comprises at least one blade, comprising a plurality of cutting elements in the form of polycrystalline diamond cutters disposed on a leading edge of the blade, at least one diamond impregnated cutting region, disposed behind the leading edge of the blade, and wherein at least one of the cutters disposed on the leading, edge is an off-tip cutting element, arranged so that it does not engage with the formation during drilling until bit wear has taken place.
E21B 10/43 - Trépans rotatifs du type racleur comportant des dents, des lames ou des organes de coupe similaires, p. ex. du type à fourche, en queue de poisson caractérisés par la disposition des dents ou des autres éléments coupants
E21B 10/26 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs
E21B 10/55 - Trépans caractérisés par des parties résistant à l'usure, p. ex. des diamants rapportés le trépan étant du type racleur, p. ex. trépan du type à fourche comportant des éléments de coupe préformés
E21B 10/54 - Trépans caractérisés par des parties résistant à l'usure, p. ex. des diamants rapportés le trépan étant du type racleur, p. ex. trépan du type à fourche
A processing apparatus is described which comprises a processing chamber (12, 52, 64), a microwave transmission device (14) operable to transmit microwaves into the processing chamber, a conveyor arrangement (16) operable to convey materials to be processed into and through the processing chamber, and a scraper (22, 40, 54) serving to clean at least part of the internal wall (12a) of the processing chamber to limit a build up of materials thereon.
B09C 1/06 - Régénération de sols pollués par des procédés thermiques
C10G 1/04 - Production de mélanges liquides d'hydrocarbures à partir de schiste bitumineux, de sable pétrolifère ou de matières carbonées solides non fusibles ou similaires, p. ex. bois, charbon par extraction
Methods and apparatus for downhole operations, such as under-reaming. An under-reaming tool (210, 310)comprises a body (214, 314) and a plurality of extendable cutters(372)mounted on the body(214, 314). The under-reaming tool (210, 310)is configured to be cycled between a first configuration in which the cutters (372)are retracted and a second configuration in which the cutters (372)are movable between retracted and extended positions. The under-reaming tool (210, 310)is configured to prevent extension of the cutters (372)by an external fluid in the first and/or second configuration/s.
E21B 10/32 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles
E21B 23/04 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage mis en œuvre à l'aide de moyens fluides, p. ex. actionnés par explosion
Methods and apparatus for downhole operations, such as under-reaming. An under-reaming tool (210, 310)comprises a body (214, 314) and a plurality of extendable cutters(372)mounted on the body(214, 314). The under-reaming tool (210, 310)is configured to be cycled between a first configuration in which the cutters (372)are retracted and a second configuration in which the cutters (372)are movable between retracted and extended positions. The under-reaming tool (210, 310)is configured to prevent extension of the cutters (372)by an external fluid in the first and/or second configuration/s.
E21B 10/32 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles
E21B 23/04 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage mis en œuvre à l'aide de moyens fluides, p. ex. actionnés par explosion
A cutting element comprises a primary cutter (20) including a first table (24) of a hard material bonded to a first substrate (26) of less hard form, the first substrate (26) of the primary cutter (20) having a recess (28) formed therein in which a secondary cutter (22) is located, the secondary cutter (22) comprising a second table (32) of a hard material bonded to a second substrate (30) of less hard material, the first and second tables (24), (32) being spaced apart from one another by at least part of the first substrate (26).
E21B 10/573 - Parties rapportées du type bouton comportant des éléments de coupe préformés montés sur un support distinct, p. ex. parties rapportées polycristallines caractérisés par les détails du support, p. ex. la structure du substrat ou l'interface entre le substrat et l'élément de coupe
A resettable downhole tool actuator comprises a housing, a collet slidable within the housing and defining a seating with which a ball is engageable, in use, the collet being mounted upon a moveable support including a piston and arranged such that, when the bail engages the seating, fluid flow through an axially extending passage provided in the support is restricted, the housing including an increased diameter region arranged such that, when the seating is aligned with the increased diameter region, outward deflection of the collet permits the ball to pass through the seating and through the axially extending passage.
E21B 34/14 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par le mouvement des outils, p. ex. obturateurs à manchons actionnés par des pistons ou par des outils à câble
E21B 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
E21B 10/26 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs
E21B 34/06 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits
E21B 21/10 - Aménagements des vannes dans les systèmes de circulation des fluides de forage
A drill bit (1) comprising a body which is rotatable, in use, about a body axis (18) for drilling, and a cutting element (10) comprising a superhard portion (4) with an end face (2) and a peripheral cutting face (5), the cutting element being secured to the drill body so as to be moveable in a direction of movement when the drill bit is rotates, the cutting element further being rotatable about a cutting element axis (7) thereof, the cutting element axis extending away from the end face of the superhard portion through the cutting element, and wherein the cutting element axis is tilted towards the direction of movement (A).
E21B 10/573 - Parties rapportées du type bouton comportant des éléments de coupe préformés montés sur un support distinct, p. ex. parties rapportées polycristallines caractérisés par les détails du support, p. ex. la structure du substrat ou l'interface entre le substrat et l'élément de coupe
A drill bit (10), for example of a fixed cutter type, comprises at least one structure, for example a blade, having first and second rows of cutters (35a-h) thereon. The first row is configured to achieve suitable performance when the drill bit drills in concentric mode. The second row of cutters is configured to improve the performance of the first row of cutters when the drill bit drills in eccentric mode. For example, the second row increases depth of cut and wear resistance in eccentric mode drilling. The drill bit may be mounted on a bent motor (120) used in directional drilling.
A cutting element comprises a table of superhard material bonded to a substrate, wherein the table defines a cutting edge and has a chamfered peripheral edge, and a groove in a sidewall of the cutting element passes through the chamfered peripheral edge, so as to reduce the depth of the chamfer at the location of the groove.
E21B 10/567 - Parties rapportées du type bouton comportant des éléments de coupe préformés montés sur un support distinct, p. ex. parties rapportées polycristallines
A drill bit comprises at least one blade, comprising a plurality of cutting elements in the form of polycrystalline diamond cutters disposed on a leading edge of the blade, at least one diamond impregnated cutting region, disposed behind the leading edge of the blade, and wherein at least one of the cutters disposed on the leading edge is an off-tip cutting element, arranged so that it does not engage with the formation during drilling until bit wear has taken place.
E21B 10/43 - Trépans rotatifs du type racleur comportant des dents, des lames ou des organes de coupe similaires, p. ex. du type à fourche, en queue de poisson caractérisés par la disposition des dents ou des autres éléments coupants
34.
DOWNHOLE TOOL WITH ROTATIONAL DRIVE COUPLING AND ASSOCIATED METHODS
A downhole tool (10) comprising rotatable inner and outer sleeves (62, 63). The sleeves (62, 63) comprise coupling portions for transmitting a torque between the sleeves (62, 63). The tool is reconfigurable between a first configuration whereby the coupling portions are axially misaligned to prevent transmission of torque between the inner and outer sleeves (62, 63), and a second configuration whereby the coupling portions are axially aligned to permit a transmission of torque between the sleeves (62, 63). At least one of the coupling portions is configured to prevent the transmission of torque above a predetermined torque threshold.
A downhole apparatus (80) comprising a pressure pulse generator (84) and a pulse reflector (96). The pulse reflector (96) reflects at least a portion of an incident pressure pulse from the generator (84) as a reflected pressure pulse. The apparatus (80) is configured to provide the reflected pressure pulse with a phase shift with respect to the incident pressure pulse. A method of transmitting pressure pulses downhole by generating a pressure pulse and reflecting at least a portion of an incident pressure pulse at a pulse reflector as a reflected pressure pulse. A phase shift of the reflected pressure pulse with respect to the incident pressure pulse is controlled.
A drilling assembly, drilling system and method is provided. The drilling system includes a drilling rig with a drill string deployable therefrom and drivable thereby. The drill string has a bottom hole assembly with a drill bit at a lower end thereof advanceable into a subterranean formation to form a wellbore. The drilling assembly includes at least one mandrel operatively connectable to the drill string, at least one sleeve positionable about the mandrel (the sleeve having an offset stabilizer on an outer surface thereof selectively positionable in contact with a wall of the wellbore), and an orienter with a receptacle on an interior of the sleeve and a socket on an exterior of the mandrel. The socket is interlockingly engageable with the receptacle whereby the sleeve is orientable about the drill string. The one mandrel and the sleeve have a mass offset from the drill string whereby rotation of the drill string is affected during drilling.
E21B 17/10 - Protecteurs contre l'usureDispositifs de centrage
E21B 7/06 - Modification de la direction du trou de forage
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
An apparatus for separating a hydrocarbon content from a material matrix comprises the hydrocarbon content and a water content, the apparatus comprising: a material feeder arranged to feed material through a treatment chamber, the treatment chamber comprising a window which is substantially transparent to microwaves; a microwave emitter arranged in use to expose feed material in the treatment chamber to microwaves via the window in order to cause rapid heating of at least part of the water content of the matrix to form steam, so as to remove at least part of the hydrocarbon content from the matrix; wherein the material feeder and treatment chamber are arranged so that in use, the treatment chamber is substantially filled with material matrix.
C10G 1/00 - Production de mélanges liquides d'hydrocarbures à partir de schiste bitumineux, de sable pétrolifère ou de matières carbonées solides non fusibles ou similaires, p. ex. bois, charbon
C07C 1/00 - Préparation d'hydrocarbures à partir d'un ou plusieurs composés, aucun d'eux n'étant un hydrocarbure
C10G 1/10 - Production de mélanges liquides d'hydrocarbures à partir de schiste bitumineux, de sable pétrolifère ou de matières carbonées solides non fusibles ou similaires, p. ex. bois, charbon à partir de caoutchouc ou de déchets de caoutchouc
A resettabte downhole tool actuator comprises a housing (10), a collet (26) slidabte within the housing (10) and defining a seating (40) with which a ball (42) is engageable, in use, the collet (26) being mounted upon a moveable support (16) including a piston (22) and arranged such that, when the bail (42) engages the seating (40), fluid flow through an axially extending passage (20) provided in the support (16) is restricted, the housing (10) including an increased diameter region (46) arranged such that, when the seating (40) is aligned with the increased diameter region (46), outward deflection of the collet (26) permits the ball (42) to pass through the seating (40) and through the axially extending passage (20).
E21B 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
A resettabte downhole tool actuator comprises a housing (10), a collet (26) slidabte within the housing (10) and defining a seating (40) with which a ball (42) is engageable, in use, the collet (26) being mounted upon a moveable support (16) including a piston (22) and arranged such that, when the bail (42) engages the seating (40), fluid flow through an axially extending passage (20) provided in the support (16) is restricted, the housing (10) including an increased diameter region (46) arranged such that, when the seating (40) is aligned with the increased diameter region (46), outward deflection of the collet (26) permits the ball (42) to pass through the seating (40) and through the axially extending passage (20).
E21B 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
A downhole tool 10 comprising a fluid-actuated piston 20 and a motor-driven valve 18. The fluid-actuated piston 20 is operatively associated with a reciprocating mass 22. The motor-driven valve 18 is configured to supply actuating fluid sequentially to drive the piston 20 downwards and upwards. A method of reciprocating a mass 22 in a downhole tool 10. The method comprises cycling a motor-driven valve 18 between a first configuration and a second configuration. In the first configuration actuating fluid pressure drives a piston 20 associated with the mass 22 downwards. In the second configuration actuating fluid pressure drives the piston 20 upwards.
E21B 10/26 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs
A downhole tool and associated methods. The downhole tool comprises a body with a throughbore; at least one extendable cutting member; and an actuation member. The actuation member is operatively associated with the extendable cutting member and movable relative to the body to extend the cutting member laterally from the body along an extension axis. The extension axis is offset from a radius of the body.
E21B 10/32 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles
E21B 29/00 - Découpage ou destruction de tubes, packers, bouchons ou câbles, situés dans les trous de forage ou dans les puits, p. ex. découpage de tubes endommagés, de fenêtresDéformation des tubes dans les trous de forageRemise en état des tubages de puits sans les retirer du sol
A downhole tool comprises a body, an extendable cutting member operable to cooperate with a hydraulically actuated cam member, and a cam member lock. The lock is configurable to be activated downhole to restrict movement of the cam member relative to the body and prevent extension of the cutting member.
E21B 7/28 - Élargissement des trous forés, p. ex. par forage à contresens
E21B 10/32 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles
An under- reamer (10) comprises a body (12) and extendable cutters (16) mounted on the body. The under- reamer is configured to be cycled between a first configuration in which the cutters are retracted and a second configuration in which the cutters are movable between retracted and extended positions. A control mechanism (34) is provided and is configurable to prevent the under-reamer cycling between the first and second configurations and thus maintain the under-reamer in a selected one of the first and second configurations.
E21B 10/32 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles
44.
A BOREHOLE CUTTING ASSEMBLY FOR DIRECTIONAL CUTTING
A borehole cutting assembly for directional cutting in a borehole, the assembly comprising an input pipe (1) and a cutting head (3) rotatably mounted on the input pipe (1) such that the orientation of the cutting head (3) relative to the input pipe (1) can be altered to determine the direction of cutting of the borehole. A cutting tool (9) and cutting tool motor (11) are mounted on the cutting head (3) to enable the cutting tool (9) to be rotatably driven relative to the cutting head (5) so that when the cutting tool (9) is loaded in use the cutting head (3) is subject to a tool reaction torque that acts to rotate the cutting head (3) to change the orientation of the cutting head (3). The cutting head (3) is rotatably mounted on the input pipe (1) by a controlled torque coupling (13) comprising a progressive cavity pump (21) having a rotor (15) and a stator (19) each provided with drive formations arranged to define a fluid flow cavity (27) therebetween. Rotation of the rotor (15) relative to the stator (19) forces fluid flow through the cavity (27) to counteract the tool reaction torque. Fluid flow control means (45) is provided to resist the flow of fluid through the cavity (27) in use and thus to control the magnitude of the counteraction generated by the progressive cavity pump (21) to the tool reaction torque.
brevets
