An foldable guide for a continuous rod injector features first and second segments of similar length and a shorter third segment. In a fully folded state of the guide, the shorter third segment is foldable into a position contained between facing-together concave sides of the first and segments for improved collapse of the guide into a compact state for storage or transport. A proximal end of the first segment is mounted to the injector, which is carried on a mast having a selectively deployable jib thereon at an elevation above the installed position of the injector. The jib is movable between a slant-mode condition reaching outward from the mast and a vertical-mode position retracted into a more compact relation with the mast. The slant-mode condition provides improved support and stability by providing a more direct overhead support for the rod guide in slant well applications.
A hydraulic lift apparatus for operating a downhole pump features a hydraulic linear actuator with a piston longitudinally slidable on a central axis of a rotatable portion of a housing. An anti-rotation rod runs longitudinally through the piston at a position radially offset outwardly from the central axis to prevent rotation between the piston and housing. A stationary motor powers a drive train whose output is connected to the rotatable portion of the housing and centered on the central axis. The actuator is one-way actuator with a hydraulically driven upstroke. A leak detection passage extends through the piston to collect fluid that has leaked across the piston seals and convey it to a leak detection port and associated containment tank. A position sensor for monitoring the piston movement features a sensing rod depending downwardly into a hollow piston shaft carried by the piston and connected to the pump rod.
E21B 6/04 - Moyens d'entraînement séparés de la percussion et de la rotation
F04B 53/14 - Pistons, tiges de piston ou liaisons piston-tige
F04B 47/08 - Pompes ou installations de pompage spécialement adaptées pour élever un fluide à partir d'une grande profondeur, p. ex. pompes de puits dont les ensembles pompe-moteur sont placés à grande profondeur les moteurs étant actionnés par un fluide
F04B 47/04 - 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 les moyens d'entraînement comportant des moyens fluides
E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
E21B 47/117 - Détection de fuites, p. ex. du tubage, par test de pression
E21B 19/16 - Branchement ou débranchement des accouplements de tubes ou de joints
F04B 19/00 - "Machines" ou pompes ayant des caractéristiques particulières non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
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
F15B 15/28 - Moyens pour indiquer la position, p. ex. fin de course
F15B 15/14 - Dispositifs actionnés par fluides pour déplacer un organe d'une position à une autreTransmission associée à ces dispositifs caractérisés par la structure de l'ensemble moteur le moteur étant du type à cylindre droit
E21B 4/00 - Moyens d'entraînement dans le trou de forage
F04B 17/03 - Pompes caractérisées par leur combinaison avec des machines motrices ou moteurs particuliers qui les entraînent ou par leur adaptation à ceux-ci entraînées par des moteurs électriques
F04B 53/12 - ClapetsAgencement des clapets disposés dans ou sur des pistons
3.
Continuous well string injector using multi-piston cylinder blocks for application of skate pressure
A continuous well string injector features a frame carrying a pair of endless chain conveyors on opposite sides of a pathway. Each chain carries gripper dies for engaging the continuous well string when received in the pathway. A respective skate and cylinder block reside in the closed loop path of each chain. Each cylinder block features a plurality of blind bores having open ends facing toward the respective skate, and a respective piston is slidably disposed within each bore. Hydraulic extension and retraction ports open into the cylinder bores on opposite sides of the piston, whereby back and forth displacement of the pistons forces the skates toward and away from one another to grip and release the continuous well string. A front wall of the frame has an open horizontal gap aligned with the pathway to enable lateral entrance and exit of the continuous string to and from the pathway.
E21B 19/08 - Appareils pour faire avancer les tiges ou les câblesAppareils pour augmenter ou diminuer la pression sur l'outil de forageAppareils pour compenser le poids des tiges
E21B 19/22 - Manipulation de tubes ou de tiges enroulés, p. ex. de tubes de forage flexibles
B66D 3/00 - Appareils de levage ou de traction portatifs ou mobiles
B65H 51/10 - Rouleaux, poulies, cabestans ou éléments rotatifs à prise à engrenages disposés pour fonctionner en groupes ou en coopération avec d'autres éléments avec surfaces opposées agissant ensemble, p. ex. formant des resserrements
4.
Spherical ball skate for continuous well string injectors
A skate for an injector apparatus in which gripper dies on a pair of endless chains driven around respective closed loop paths on different sides a continuous wellbore string are forced against the continuous string by forcing a set of the skates toward theretoward from inside the closed loop paths of the endless chains. The inventive skate features a skate body carrying a plurality of spherical balls that are exposed on a side of the skate that faces toward the continuous string in order to allow riding of endless chains over exposed surfaces of the spherical balls as the endless chains are driven through the respective closed-loop paths, whereby the gripper dies ride over the spherical balls of said skates under the forcing of said skates toward the continuous string.
E21B 19/08 - Appareils pour faire avancer les tiges ou les câblesAppareils pour augmenter ou diminuer la pression sur l'outil de forageAppareils pour compenser le poids des tiges
E21B 19/22 - Manipulation de tubes ou de tiges enroulés, p. ex. de tubes de forage flexibles
B66D 3/00 - Appareils de levage ou de traction portatifs ou mobiles
5.
SPHERICAL BALL SKATE FOR CONTINUOUS WELL STRING INJECTORS
A skate for an injector apparatus in which gripper dies on a pair of endless chains driven around respective closed loop paths on different sides a continuous wellbore string are forced against the continuous string by forcing a set of the skates toward theretoward from inside the closed loop paths of the endless chains. The inventive skate features a skate body carrying a plurality of spherical balls that are exposed on a side of the skate that faces toward the continuous string in order to allow riding of endless chains over exposed surfaces of the spherical balls as the endless chains are driven through the respective closed-loop paths, whereby the gripper dies ride over the spherical balls of said skates under the forcing of said skates toward the continuous string.
E21B 19/08 - Appareils pour faire avancer les tiges ou les câblesAppareils pour augmenter ou diminuer la pression sur l'outil de forageAppareils pour compenser le poids des tiges
E21B 19/22 - Manipulation de tubes ou de tiges enroulés, p. ex. de tubes de forage flexibles
6.
GRIPPING DIES FOR CONTINUOUS COILED ROD INJECTORS AND FABRICATION AND USE METHODS RELATING TO SAME
Gripper dies for a continuous coiled rod injector are machined from a single, unitary, integral steel body forming both the base portion for connection to the injector drive chain and the gripping portion for engagement of the continuous coiled rod. Lower skate pressure is required relative to conventional aluminum dies, increasing the lifespan of injector components while providing improved performance and avoiding damage to the coiled rod by use of alternating grooves and ridges in the gripping face of the die and smoothly radiused transitions the ends thereof.
E21B 19/22 - Manipulation de tubes ou de tiges enroulés, p. ex. de tubes de forage flexibles
B23P 15/24 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe de matrices
E21B 19/06 - Élévateurs, c.-à-d. dispositifs agrippant tiges ou tubes
E21B 19/08 - Appareils pour faire avancer les tiges ou les câblesAppareils pour augmenter ou diminuer la pression sur l'outil de forageAppareils pour compenser le poids des tiges
7.
Gripping dies for continuous coiled rod injectors and fabrication and use methods relating to same
Gripper dies for a continuous coiled rod injector are machined from a single, unitary, integral steel body forming both the base portion for connection to the injector drive chain and the gripping portion for engagement of the continuous coiled rod. Curved transitions are provided between ends of a gripping portion of the die and a profiled gripping face thereof, which features an arcuate surface and diverging planar surfaces extending therefrom to accommodate varying sizes of round and elliptical rod.
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