A system and method for hydraulic isolation of a downhole powered system. The system and method include a sliding sleeve, venting assemblies with venting ports, and check valves associated with a vent body, and an isolation sleeve, isolation valve, and integral packer for controlling fluid flow through the motor and pump assembly of the powered system. Also disclosed is a wet connect mandrel modified to receive the isolation sleeve, the isolation sleeve preferably capable of permitting the passage of tools therethrough and capable of preventing fluid through the inlet of the mandrel. The mandrel may also be outfitted with a built-in sliding sleeve. The sleeves, valves and packer can be actuated mechanically, hydraulically or electrically. Electrical actuation can be facilitated using the power from an adjacent wet connect mandrel.
Disclosed are methods and devices for testing downhole connector electrical systems and cable integrity during installation of a permanent completion, including a customized retrievable plug arm assembly connectable to the completion during RIH, the tool mimicking a retrievable ESP, but without motor, and can be employed with or without pressure isolation. Another method employs a slidable starpoint located within the downhole wet mate connector of the completion to provide continuous electrical contact between the phases when no retrievable assembly is in place. When a retrievable assembly is later put in place, the slidable starpoint is moved into a second position that no longer provides electrical contact between the phases. Another method uses fusible links installed between two conductors within the downhole electrical connector system of the completion to provide similar electrical contact between phases, the fusible link configured to melt away once motor current is sent through the conductors.
Disclosed are methods and devices for testing downhole connector electrical systems and cable integrity during installation of a permanent completion, including a customized retrievable plug arm assembly connectable to the completion during RIH, the tool mimicking a retrievable ESP, but without motor, and can be employed with or without pressure isolation. Another method employs a slidable starpoint located within the downhole wet mate connector of the completion to provide continuous electrical contact between the phases when no retrievable assembly is in place. When a retrievable assembly is later put in place, the slidable starpoint is moved into a second position that no longer provides electrical contact between the phases. Another method uses fusible links installed between two conductors within the downhole electrical connector system of the completion to provide similar electrical contact between phases, the fusible link configured to melt away once motor current is sent through the conductors.
A system and method for hydraulic isolation of a downhole powered system. The system and method include a sliding sleeve, venting assemblies with venting ports, and check valves associated with a vent body, and an isolation sleeve, isolation valve, and integral packer for controlling fluid flow through the motor and pump assembly of the powered system. Also disclosed is a wet connect mandrel modified to receive the isolation sleeve, the isolation sleeve preferably capable of permitting the passage of tools therethrough and capable of preventing fluid through the inlet of the mandrel. The mandrel may also be outfitted with a built in sliding sleeve. The sleeves, valves and packer can be actuated mechanically, hydraulically or electrically. Electrical actuation can be facilitated using the power from an adjacent wet connect mandrel.
A system and method for deploying a reverse Y-tool are provided. The system and method may include a first tubing branch in line with production tubing and a second tubing branch offset from the first tubing branch. The Y-tool system may also have a retrievable Electric Submersible Pump (ESP) and an orienting whipstock deployed in the first tubing branch. The orienting whipstock may direct other wellbore components to the second tubing branch. The radius of the second tubing branch is less than a radius of the first tubing branch. A reverse Y-tool mandrel is also provided that includes an upper head comprising an upper connection to production tubing, a middle body comprising a discriminating section profile, and a bottom section comprising a lower connection to production tubing and a lower connection to bypass tubing.
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 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
E21B 47/10 - Localisation des fuites, intrusions ou mouvements du fluide
E21B 47/06 - Mesure de la température ou de la pression
A permanent completion system is disclosed comprising: an upper ACP installed in the wellbore powered by a first power cable from the surface; a lower ACP installed in the wellbore below the upper ACP, and being powered by a second power cable from the surface and being connected to the upper APC by a spacer tube; and a heating assembly connected to the lower ACP in the wellbore and receiving power from the second power cable, the heating assembly, such as a mineral insulated heater cable, providing heat to the wellbore. The heating assembly preferably is retrievable and can be conveyed to the lower ACP by coil tubing. The coil tubing can be removed after conveying the heating assembly into place to permit further access to the upper ACP, e.g., to permit mechanical and electrical connection of a retrievable ESP assembly to the upper ACP.
E21B 43/24 - Procédés de récupération assistée pour l'extraction d'hydrocarbures utilisant la chaleur, p.ex. injection de vapeur
E21B 36/04 - Aménagements pour le chauffage, le refroidissement, l'isolation, dans les trous de forage ou dans les puits, p.ex. pour être utilisés dans les zones de permagel utilisant des réchauffeurs électriques
E21B 43/30 - Disposition particulière des puits, p.ex. disposition rendant optimum l'espacement des puits
A system and a method for removing a portion of an electric submersible pump power cable conduit housing are provided. The method may include cutting a conduit housing of the conduit, sliding the cut conduit housing off the conduit, and squaring an end surface of remaining conduit housing. The cutting of the conduit housing is not a through cut and the sliding of the cut conduit housing off of the cut conduit is performed with a conduit housing spreader. The system may include a conduit housing cutter for cutting partially through the conduit housing of the conduit and a conduit housing spreader for pulling the portion of the conduit housing apart from a remaining conduit housing. In addition, the system may include a squaring tool to square an end surface of the remaining conduit housing relative to an axis of the conduit.
H01B 7/00 - Conducteurs ou câbles isolés caractérisés par la forme
H02G 9/06 - Installations de lignes ou de câbles électriques dans ou sur la terre ou sur l'eau dans des tubes ou conduits souterrains; Leurs tubes ou conduits
E21B 17/20 - Tubes de forage flexibles ou articulés
E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
E21B 41/00 - Matériel ou accessoires non couverts par les groupes
F04D 13/10 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité pour utilisation en position immergée adaptés pour l'utilisation dans les forages de mine
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p.ex. de leur extrémité
F04D 13/06 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité
8.
Stress control cones for downhole electrical power system tubing encapsulated power cables
A stress cone for reducing electrical stresses is disclosed for use on terminated ends of tubing encapsulated power cable used in surface applications in a subsurface well power system employing electric submersible pumps (ESPs). The stress cone comprises an annular section about a longitudinal axis for receiving a terminated end of the TEPC in its first end and for abutting the terminated metal TEPC end against a metal shoulder at its second end therein, and an insulation chamber axially aligned with and connected to the annular section. The chamber comprises a metal interior surface symmetrical about the axis. The insulated TEPC core (without outer metal sheath) passes through the insulation chamber along the axis and then exits. The ID of the TEPC metal sheath and the inside metal surface of the chamber form a smooth ground plane transition surface. Insulation material surrounds the TEPC insulation layer within the insulation chamber.
System and method for installing a power line in a well. At least some of the illustrative embodiments are a powered device engaged with a power line connectable to a power supply by a power connector, and a sensor coupled to the power connector and communicatively coupled to the power line, the sensor is configured to provide data indicative of the environment in the vicinity of the power connector during installation of the power line.
E21B 47/02 - Détermination de l'inclinaison ou de la direction
E21B 47/06 - Mesure de la température ou de la pression
E21B 47/024 - Détermination de l'inclinaison ou de la direction des dispositifs dans le trou de forage
F04B 47/06 - 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
System and method for providing power to a downhole powered device through a sensor housing. At least some of the illustrative embodiments are a powered device engaged with a power line connectable to a power supply by a power connector, and a sensor system arranged in a sensor housing, the sensor housing located between the powered device and the power connector, and the power line passing through the sensor housing such that heat generated from the power line is dissipated away from the sensor system.
E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
E21B 47/017 - Protection des instruments de mesure
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 forage; Protection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
E21B 47/06 - Mesure de la température ou de la pression
F04B 47/00 - Pompes ou installations de pompage spécialement adaptées pour élever un fluide à partir d'une grande profondeur, p.ex. pompes de puits
The present invention is directed to fluid compensated downhole connectors and connection systems employing an intensified dielectric fluid compensation. Also disclosed is a permanent downhole fluid compensated electrical connector assembly employing an intensified dielectric fluid compensation. The present disclosure is also directed to a field bypass connector system for a downhole completion tool, such as a packer, and a retrievable wet connect system also employing intensified dielectric fluid compensation.
E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
E21B 17/00 - Tiges ou tubes de forage; Trains de tiges souples; Tiges d'entraînement; Masses-tiges; Tiges de pompage; Tubages; Colonnes de production
E21B 17/04 - Accouplements; Joints entre tige et trépan, ou entre tiges
H01R 13/00 - CONNEXIONS CONDUCTRICES DE L'ÉLECTRICITÉ; ASSOCIATION STRUCTURELLE DE PLUSIEURS ÉLÉMENTS DE CONNEXION ÉLECTRIQUE ISOLÉS LES UNS DES AUTRES; DISPOSITIFS DE COUPLAGE; COLLECTEURS DE COURANT - Détails de dispositifs de couplage des types couverts par les groupes ou
H01R 13/52 - Boîtiers protégés contre la poussière, les projections, les éclaboussures, l'eau ou les flammes
H01R 13/53 - Socles ou boîtiers pour dures conditions de service; Socles ou boîtiers avec des moyens pour éviter l'effet couronne ou l'amorçage d'un arc
E21B 17/042 - Accouplements; Joints entre tige et trépan, ou entre tiges filetés
H01R 13/533 - Socles ou boîtiers conçus pour l'emploi dans des conditions extrêmes, p.ex. haute température, rayonnements, vibrations, environnement corrosif, pression
A downhole electrical wet connector comprising a plug which is slidingly inserted into a socket, the socket comprising a series of wiper seals spaced apart by separation zones, each zone being individually supplied with dielectric fluid from a separate reservoir. A retractable insert is arranged in the socket and displaced by the plug during connection. The fluid pressure in each zone is individually regulated relative to ambient wellbore pressure and the pressure in adjacent zones and optionally equalized to minimize loss of fluid.
H01R 4/64 - Connexions entre ou avec des parties conductrices n'ayant pas au premier chef de fonction électrique, p.ex. châssis, boîtier, rail
H01R 13/52 - Boîtiers protégés contre la poussière, les projections, les éclaboussures, l'eau ou les flammes
H01R 13/00 - CONNEXIONS CONDUCTRICES DE L'ÉLECTRICITÉ; ASSOCIATION STRUCTURELLE DE PLUSIEURS ÉLÉMENTS DE CONNEXION ÉLECTRIQUE ISOLÉS LES UNS DES AUTRES; DISPOSITIFS DE COUPLAGE; COLLECTEURS DE COURANT - Détails de dispositifs de couplage des types couverts par les groupes ou
A method for implementing asynchronous operation of a permanent magnet motor (PMM) by detecting asynchronous operation of the PMM and creating cyclic variations in the PMM output using the asynchronous operation of the PMM. In another embodiment, an apparatus that comprises a microcontroller that obtains computer executable instructions stored on a non-transitory medium that when executed by the microcontroller causes the apparatus to determine that a rotor shaft within a PMM is rotationally restricted and to vary a plurality of frequencies and a plurality of amplitude currents supplied to the monitor to produce a reverse impact on a downhole tool coupled to the PMM.
H02P 8/38 - Protection contre les défauts, p.ex. contre l'échauffement excessif ou le décrochage; Indication des défauts le défaut consistant en un décrochage
H02P 23/00 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par un procédé de commande autre que la commande par vecteur
H02P 23/14 - Estimation ou adaptation des paramètres des moteurs, p.ex. constante de temps du rotor, flux, vitesse, courant ou tension
E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
H02P 25/03 - Moteurs synchrones avec excitation sans balai
H02P 29/028 - Détection d’un défaut, p.ex. court circuit, rotor bloqué, circuit ouvert ou perte de charge le moteur continuant de fonctionner malgré le défaut, p.ex. élimination, compensation ou résolution du défaut
H02P 25/024 - Moteurs synchrones commandés par la fréquence d’alimentation
H02P 25/026 - Moteurs synchrones commandés par la fréquence d’alimentation ce qui permet de détecter la position du rotor
A wet connection system suitable for use in hydrocarbon wells preferably comprises one or more elongate, small diameter conduits (50) which extend down the wellbore (2) and terminate adjacent a locating structure (11) on the production tubing (10). Equipment (70) deployed at the locating structure is connected to one or more self supporting conductors (30) which extend down the conduits from the wellhead (5). Preferably the conductors are retractable and the conduits are sealingly connected to the equipment, allowing the equipment and conductors to be deployed and recovered independently of each other and to be flushed with dielectric oil (99) pumped down the conduits after re-connection.
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
A downhole electrical wet connector comprising a plug which is slidingly inserted into a socket, the socket comprising a series of wiper seals spaced apart by separation zones, each zone being individually supplied with dielectric fluid from a separate reservoir. A retractable insert is arranged in the socket and displaced by the plug during connection. The fluid pressure in each zone is individually regulated relative to ambient wellbore pressure and the pressure in adjacent zones and optionally equalised to minimise loss of fluid.
H01R 4/64 - Connexions entre ou avec des parties conductrices n'ayant pas au premier chef de fonction électrique, p.ex. châssis, boîtier, rail
H01R 13/00 - CONNEXIONS CONDUCTRICES DE L'ÉLECTRICITÉ; ASSOCIATION STRUCTURELLE DE PLUSIEURS ÉLÉMENTS DE CONNEXION ÉLECTRIQUE ISOLÉS LES UNS DES AUTRES; DISPOSITIFS DE COUPLAGE; COLLECTEURS DE COURANT - Détails de dispositifs de couplage des types couverts par les groupes ou
A synchronous permanent magnet motor is controlled independently of position sensing means by determining the system parameters including the motor impedance and back-emf and the cable impedance and supplying power according to a predefined voltage:frequency ratio which is determined based on said system parameters to provide a desired rate of acceleration determined by the supply voltage.
H02P 6/00 - Dispositions pour commander les moteurs synchrones ou les autres moteurs dynamo-électriques utilisant des commutateurs électroniques en fonction de la position du rotor; Commutateurs électroniques à cet effet
H02P 23/00 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par un procédé de commande autre que la commande par vecteur
H02P 25/02 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de moteur ou par des détails de structure caractérisés par le type de moteur
H02P 27/04 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p.ex. tension d’alimentation d’onduleurs ou de convertisseurs
H02P 1/52 - Dispositions de démarrage de moteurs électriques ou de convertisseurs dynamo-électriques pour faire démarrer des machines dynamo- électriques ou des convertisseurs dynamo-électriques pour faire démarrer individuellement un moteur synchrone par accroissement progressif de la fréquence d'alimentation du moteur
According to the present invention, there is provided a well pumping system comprising a length of coiled tubing extending to the surface of the well, a first electric pump, a first electric motor, and a sealing means that seals against the side of the well. The sealing means include a first fluid path through which coiled tubing is in fluid communication with the well beneath the sealing means, and a second fluid path through which first electric pump is in fluid communication with the well beneath the sealing means.
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
F04B 47/06 - 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
An electrical connection for use in boreholes or other remote environment has first and second conductive members. The two conductive members are movable to form an electrical contact. Also provided is a means for urging dielectric fluid around the electrical contact formed by the first conductive member and second conductive member as the first and second conducting members are moved together.
An electric submersible pump assembly (ESP) (21, 120) is deployed in a production tube (20, 100) in a borehole such that the motor (26, 41, 121) of the ESP is spaced from the inner wall of the production tube, defining a conduit (36, 111) through which the pumped well fluid can flow to cool the motor. The production tube may have an enlarged diameter portion (25, 76, 101) within which the motor is positioned. Alternatively or additionally, the ESP and/or the production tube may be provided with stabilizing spacers (24, 45, 140, 141) which extend between the ESP and the tube to centralize the ESP in the tube and support it against vibrational movement, the spacers defining an annular conduit (36, 111) between the motor casing and the production tube.
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 27/00 - Récipients pour ramasser ou déposer des substances dans les trous de forage ou les puits, p.ex. cuillers pour ramasser de la boue ou du sable; Trépans comportant des moyens pour ramasser des substances, p.ex trépans à clapet
A cable and tubing suspends an electrically powered tool in a borehole and provides the tool with electrical power. The cable is disposed in the tubing, and the cable incorporates a conducting member which carries the majority of the tensile stress on the cable without the cable being secured along its length to the inside of the tubing. The cable may be capable of supplying high voltage electrical power, in which case the cable comprises a conducting member having a steel core, an outer cladding of copper, and at least one insulating layer surrounding the outer cladding of copper. The copper makes up between 20% and 40% of the total metal content of the cable, the cable being able to support at least its own weight.
A wet connection system suitable for use in hydrocarbon wells preferably comprises one or more elongate, small diameter conduits (50) which extend down the wellbore (2) and terminate adjacent a locating structure (11) on the production tubing (10). Equipment (70) deployed at the locating structure is connected to one or more self supporting conductors (30) which extend down the conduits from the wellhead (5). Preferably the conductors are retractable and the conduits are sealingly connected to the equipment, allowing the equipment and conductors to be deployed and recovered independently of each other and to be flushed with dielectric oil (99) pumped down the conduits after re-connection.
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 pump system for use in with a downhole pipe string has a pump comprising at least one cylinder with at least one piston inside the cylinder, the movement of the piston causing fluid to be drawn into the pump through a pump inlet before being pushed out through a pump outlet. The pump is housed in a tube having a cammed surface formed by internal wall of the tube, and the piston has a cam follower such that rotation of the piston relative to the tube causes the piston to move relative to the cylinder. Further, a pump system is shown which has two or more such pumps arranged along the downhole pipe string, the pump outlets feeding into a common manifold. The strokes of the piston or pistons of one pump may be out of step with the strokes of the piston or pistons of another pump such that the outlet stream is more uniform.
F04B 1/12 - "Machines" ou pompes multicylindres caractérisées par le nombre ou la disposition des cylindres ayant des cylindres coaxiaux, parallèles ou inclinés par rapport à l'arbre principal
23.
Wireline or coiled tubing deployed electric submersible pump
An electric submersible pump and motor assembly for downhole applications has an electric motor having a stationary nonrotating through bore, a pump driven by the electric motor, a deployment line upon which the electric motor and pump may be lowered down through a production tube, and a seal for sealing the assembly against the production tube. An inlet upstream of the seal through which well bore fluid may flow extends through the pump and the stationary nonrotating through bore of the motor, and the fluid may exit through an outlet open to the well bore downstream of the seal.
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
An assembly for downhole applications comprises has an electric motor, a pump driven by the electric motor and having a lower pump inlet and an upper pump outlet, and a deployment tube from which the assembly is suspended from and by means of which the assembly can be lowered through the well. A nonrotating hollow shaft forms a bore extending from the tube through the motor and the pump to an assembly opening at the bottom of the assembly such that a device suspended on a wireline or coiled tube may be lowered through the deployment tube and pass through the electric motor and pump to a part of the well below the pump inlet. The motor is linked outside the bore to the pump for driving the pump.
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
E21B 47/00 - Relevés dans les trous de forage ou dans les puits
brevets
