A stuffing box for sealing the end of a rotatable rod is disclosed. The stuffing box includes a sleeve adapted to concentrically receive a portion of the rod therethrough and a tubular pipe concentrically arranged within the sleeve, the rod passing generally concentrically through the pipe, the pipe being in annular spaced relation to the sleeve and the rod. One or more ring seals are arranged between the pipe and the sleeve to prevent the flow of well fluids into the annulus between the sleeve and the pipe. An annular fluid chamber is defined between the sleeve and the pipe below the ring seals. During normal operation, the fluid chamber is pressurized to apply a pressure to the one or more ring seals. One or more uni-directional seals are arranged below the fluid chamber and configured to permit fluid flow into the fluid chamber.
A rod lock out clamp includes a housing having a central bore for receiving a rod in spaced relation therethrough and clamp members in the housing for grippingly and frictionally engaging the rod in the bore. At least one of the clamp members has an inner end and a recess in the inner end, the recess having a profile with an arcuate portion having a radius of curvature that reduces from a maximum radius to a minimum radius. Manipulating means are coupled to the housing and the clamp members for moving the clamp members between a rod gripping position and a retracted position.
A stuffing box and seal cartridge for sealing the end of a rotatable rod is disclosed. The stuffing box includes a sleeve adapted to concentrically receive a portion of the rod therethrough and a tubular pipe concentrically arranged within the sleeve, the rod passing generally concentrically through the pipe, the pipe being in annular spaced relation to the sleeve and the rod. One or more ring seals are arranged between the pipe and the sleeve to prevent the flow of well fluids into the annulus between the sleeve and the pipe. An annular fluid chamber is defined between the sleeve and the pipe below the ring seals. One or more uni-directional seals are arranged below the fluid chamber and configured to permit fluid flow into the fluid chamber. During normal operation, the fluid chamber is pressurized to apply a pressure to the one or more ring seals, and the fluid chamber pressure is varied in response to well fluid pressure.
Embodiments of a wellhead assembly have a tubular body with a removable bottom cap to house a tubing rotator comprising a multi-enveloping worm gear assembly which provides sufficient torque to rotate tubing strings in deep and/or deviated wellbores. The bottom cap is supported on a wellhead having a dognut for supporting a production string therefrom in a wellbore. The bottom cap rotatably supports a mandrel and multi-enveloping worm wheel thereon, the mandrel being connected to the dognut and tubing string for co-rotation therewith. The tubular body supports a multi-enveloping worm for engagement with the worm wheel when the tubular body is lowered axially onto the bottom cap. When the tubular body and worm are lifted axially from the bottom cap, the worm wheel and mandrel are exposed for repair or replacement without need to pull the production string from the wellbore. The tubular housing can further house a flow tee and opposing blowout preventer ports and rams therein, forming an integrated wellhead assembly.
E21B 33/04 - Têtes de tubageSuspension des tubages ou des colonnes de production dans les têtes de puits
F16H 1/16 - Transmissions à engrenages pour transmettre un mouvement rotatif sans engrenages à mouvement orbital comportant uniquement deux organes engrenés dont les axes ne sont pas parallèles comportant une vis sans fin et une roue à vis sans fin
37 - Services de construction; extraction minière; installation et réparation
Produits et services
Wellhead drives, namely, gear drives, belt drives and hydraulic drives; progressive cavity pumps; Remote power units for use in the oil and gas industry, in the nature of dynamos; Powered oil well blow out preventers having a sealing and clamp mechanism for use in the oil and gas industry; stuffing boxes being part of machines that eliminate oil spills to protect the environment in the oil and gas industry Maintenance and servicing of artificial lift systems and components, namely, wellhead drives, power units, and hydraulic and electric systems for use in the oil and gas industry
Embodiments of a safety guard, fit concentrically over a rotating member, such as a rod assembly, which extends outwardly from apparatus, such as a drive head. The guard may be restrained during normal operation for preventing entanglement of personnel or other apparatus with the rod assembly which continues to rotate within the tubular guard, or may be unrestrained during normal operation. When unrestrained, the guard is free to co-rotate with the rod assembly, but has a low moment of inertia such that the guard decelerates rapidly when restrained so as to prevent entanglement. An anti-friction interface between the guard and the rod assembly is formed by the material of manufacture of the guard itself or by bearings or bushings supported in an annulus between the guard and the rod assembly.
F16P 1/04 - Écrans ou capots tournant sur des arbres rotatifs
E21B 43/00 - Procédés ou dispositifs pour l'extraction de pétrole, de gaz, d'eau ou de matériaux solubles ou fusibles ou d'une suspension de matières minérales à partir de puits
7.
PULLING CLAMP FOR CONTINUOUS ROD OR COILED TUBING STRINGS
A pulling clamp is provided for releaseable connection to a blunt, uphole string end of a continuous string. A main clamp body has clamp bore therethrough and having a string-receiving opening at the pulling end for receiving the string end, an actuating bore at the pulled end and a tapered bore therebetween. A taper insert having a radially compressible gripping bore is beatable in the tapered bore and axially actuable between a passive first receiving position, for receiving the string end, and the active second gripping position for radially compressing the taper insert about the string end for actively gripping the string end therein. The taper insert can be axially actuated using a threaded main body and threaded top cap for sandwiching the taper insert therebetween, the top cap being threaded axially into and out of the pulled end of the main body between the passive and active positions.
09 - Appareils et instruments scientifiques et électriques
37 - Services de construction; extraction minière; installation et réparation
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
Produits et services
(1) Wellhead drives namely gear drives, belt drives and hydraulic drives; progressive cavity pumps; stuffing boxes all for use in the oil and gas industry
(2) Remote power units for use in the oil and gas industry
(3) Blow out preventers having a sealing and clamp mechanism for use in the oil and gas industry (1) Manufacture of artificial lift systems and components for the oil and gas industry
(2) Maintenance and servicing of artificial lift systems and components namely, wellhead drives, power units, and hydraulic and electric systems for use in the oil and gas industry
37 - Services de construction; extraction minière; installation et réparation
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
Produits et services
(1) A releaseable clamp that supports and holds a rod string in wellhead equipment for use in the oil and gas industry (1) Manufacture, maintenance and servicing of a releaseable clamp that supports and holds a rod string in well head equipment for use in the oil and gas industry
In a downhole rod-driven pump, continuous rod is used to drive the pump. The continuous rod is connected directly to the drive eliminating the need for a polish rod and an uphole coupling. A coupling is used to connect the continuous rod to the pump reducing restrictions in the production annulus and wear on the production tubing. Further, clean out tubing can be inserted into the production tubing beside the continuous rod and can extend therein to the pump without restriction. When the coupling is a threaded coupling, the continuous rod can be rotated in an appropriate direction to release the continuous rod from the pump when the pump is stuck. When the coupling is a shear coupling, the shear coupling can be sheared for releasing the pump from the continuous rod. When the pump is a progressing cavity pump and the coupling is a shear coupling, the continuous rod can be reverse rotated for changing the direction of pumping and if the rotor thereafter remains stuck, the shear coupling can be sheared.
F04B 47/02 - Pompes ou installations de pompage spécialement adaptées pour élever un fluide à partir d'une grande profondeur, p. ex. pompes de puits les mécanismes d'entraînement étant placés au niveau du sol
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 17/042 - AccouplementsJoints entre tige et trépan, ou entre tiges filetés
E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
F04B 47/12 - Pompes ou installations de pompage spécialement adaptées pour élever un fluide à partir d'une grande profondeur, p. ex. pompes de puits élevant le fluide à pomper jusqu'à la surface au moyen d'un piston libre
13.
Cam-actuated centrifugal brake for preventing backspin
A cam assisted centrifugal brake or clutch system provides increased mechanical advantage to improve the output torque relative to prior art devices such as leading brake shoes. The brake or clutch engagement is cammed radially outwardly to engage a brake housing in one direction and guided to a disengaged position in the other direction. Centrifugal forces retain the brake in the disengaged position. Embodiments of the present invention are applied as a backspin braking system that is incorporated into a drive head for a progressing cavity pump drive system.
F16D 59/00 - Freins automatiques, p. ex. entrant en action à une vitesse prédéterminée
F04C 15/00 - Parties constitutives, détails ou accessoires des "machines", des pompes ou installations de pompage non couverts par les groupes
E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
F16D 51/48 - Freins à auto-serrage à sabots pivotants avec deux sabots conjugués ou à action réciproque directe
F16D 65/22 - Mécanismes d'actionnement pour freinsMoyens pour amorcer l'opération de freinage à une position prédéterminée disposés dans, ou sur le frein adaptés pour séparer les organes par pression
F04C 2/107 - Machines ou pompes à piston rotatif du type à engrènement extérieur, c.-à-d. avec un engagement des organes coopérants semblable à celui d'engrenages dentés du type à axe interne, l'organe externe ayant plus de dents ou de parties équivalentes de prise, p. ex. de rouleaux, que l'organe interne avec des dents hélicoïdales
F16D 121/16 - Mécanique pour relâcher un frein normalement appliqué par défaut
14.
CAM-ACTUATED CENTRIFUGAL BRAKE FOR PREVENTING BACKSPIN
A cam assisted centrifugal brake or clutch system provides increased mechanical advantage to improve the output torque relative to prior art devices such as leading brake shoes. The brake or clutch engagement is cammed radially outwardly to engage a brake housing in one direction and guided to a disengaged position in the other direction. Centrifugal forces retain the brake in the disengaged position. Embodiments of the present invention are applied as a backspin braking system that is incorporated into a drive head for a progressing cavity pump drive system.
F16D 51/12 - Freins avec organes de freinage se déplaçant vers l'extérieur coopérant avec la surface intérieure d'un tambour ou d'une pièce analogue ayant la forme de sabots de freins exclusivement mobiles radialement actionnés mécaniquement
F04C 14/06 - Commande, surveillance ou dispositions de sécurité pour "machines" ou pompes ou installations de pompage spécialement adaptées pour arrêter, pour démarrer, pour le ralenti ou pour un fonctionnement à charge nulle
F16D 59/00 - Freins automatiques, p. ex. entrant en action à une vitesse prédéterminée
F16D 65/22 - Mécanismes d'actionnement pour freinsMoyens pour amorcer l'opération de freinage à une position prédéterminée disposés dans, ou sur le frein adaptés pour séparer les organes par pression
A rod lock out clamp is disclosed. The lock out clamp includes a housing having a central bore for receiving a rod in spaced relation therethrough and clamp members in the housing for grippingly and frictionally engaging the rod in the bore. At least one of the clamp members has an inner end and a recess in the inner end, the recess having a profile with an arcuate portion having a radius of curvature that reduces from a maximum radius to a minimum radius. Manipulating means are coupled to the housing and the clamp members for moving the clamp members between a rod gripping position and a retracted position.
A cam assisted centrifugal brake or clutch system provides increased mechanical advantage to improve the output torque relative to prior art devices such as leading brake shoes. The brake or clutch engagement is cammed radially outwardly to engage a brake housing in one direction and guided to a disengaged position in the other direction. Centrifugal forces retain the brake in the disengaged position. Embodiments of the present invention are applied as a backspin braking system that is incorporated into a drive head for a progressing cavity pump drive system.
E21B 43/00 - Procédés ou dispositifs pour l'extraction de pétrole, de gaz, d'eau ou de matériaux solubles ou fusibles ou d'une suspension de matières minérales à partir de puits
F16D 51/12 - Freins avec organes de freinage se déplaçant vers l'extérieur coopérant avec la surface intérieure d'un tambour ou d'une pièce analogue ayant la forme de sabots de freins exclusivement mobiles radialement actionnés mécaniquement
F16D 59/00 - Freins automatiques, p. ex. entrant en action à une vitesse prédéterminée
F16D 65/16 - Mécanismes d'actionnement pour freinsMoyens pour amorcer l'opération de freinage à une position prédéterminée disposés dans, ou sur le frein
In a downhole rod-driven pump, continuous rod drives the pump. The continuous rod is connected directly to the drive eliminating a polish rod and uphole coupling. A coupling is used to connect the continuous rod to the pump. Continuous rod eliminates couplings therebetween removing restrictions in the production annulus and wear on the production tubing. Further, clean out tubing can be inserted beside the continuous rod to the pump without restriction. Threaded couplings allow the continuous rod to be rotated in an appropriate direction to release the continuous rod from the pump when the pump is stuck. Shear couplings permit shearing for releasing the pump from the continuous rod. When the pump is a progressing cavity pump and the coupling is a shear coupling, the continuous rod can be reverse rotated for changing the direction of pumping and if the rotor thereafter remains stuck, the shear coupling can be sheared.
E21B 17/042 - AccouplementsJoints entre tige et trépan, ou entre tiges filetés
E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
F04B 47/02 - Pompes ou installations de pompage spécialement adaptées pour élever un fluide à partir d'une grande profondeur, p. ex. pompes de puits les mécanismes d'entraînement étant placés au niveau du sol
F04C 2/107 - Machines ou pompes à piston rotatif du type à engrènement extérieur, c.-à-d. avec un engagement des organes coopérants semblable à celui d'engrenages dentés du type à axe interne, l'organe externe ayant plus de dents ou de parties équivalentes de prise, p. ex. de rouleaux, que l'organe interne avec des dents hélicoïdales
18.
STUFFING BOX WITH PRESSURIZED FLUID CHAMBER AND RELATED METHODS
A stuffing box and seal cartridge for sealing the end of a rotatable rod is disclosed. The stuffing box includes a sleeve adapted to concentrically receive a portion of the rod therethrough and a tubular pipe concentrically arranged within the sleeve, the rod passing generally concentrically through the pipe, the pipe being in annular spaced relation to the sleeve and the rod. One or more ring seals are arranged between the pipe and the sleeve to prevent the flow of well fluids into the annulus between the sleeve and the pipe. An annular fluid chamber is defined between the sleeve and the pipe below the ring seals. One or more uni-directional seals are arranged below the fluid chamber and configured to permit fluid flow into the fluid chamber. During normal operation, the fluid chamber is pressurized to apply a pressure to the one or more ring seals, and the fluid chamber pressure is varied in response to well fluid pressure.
