49 results about "Casing hanger" patented technology

The invention discloses a wellhead device which comprises a tension four-way body and a tension casing hanger arranged in a main runner hole of the tension four-way body, and a casing string is connected to the bottom of the tension casing hanger. The tension four-way body is provided with at least two sets of tension mechanisms used for supporting a tension casing hanger and at least two sets of locking mechanisms used for locking the tension casing hanger. A locking groove and a bearing step face are sequentially arranged on the outer circle face of the tension sleeve hanger from top to bottom. The tension mechanism comprises a supporting seat installed on the side portion of the tension four-way body and a supporting rod movably arranged on the supporting seat, and the locking mechanism comprises a locking sleeve installed on the side portion of the tension four-way body and a locking rod movably arranged on the locking sleeve. After casing cement well cementation, the casing hanger is lifted upwards to enable a casing string to generate large axial tension, so that a casing does not vibrate and threads are not loosened when wellhead airflow is output, and the service life of the casing string and the wellhead is prolonged.

A system includes a seal assembly configured to retain a casing hanger within a wellhead. The seal assembly includes: a main body including at least one tapered surface on an upper end thereof; a lock ring coupled to the main body and configured to expand radially outward into a profile on an inner diameter of the wellhead; and a cam ring disposed above the main body and having at least one tapered surface on a lower end thereof, the at least one tapered surface of the cam ring interfacing with the at least one tapered surface of the main body such that rotation of the cam ring in a first direction with respect to the main body causes the lock ring to move axially upward.

The utility model relates to the technical field of hangers, and discloses a mandrel type casing hanger which comprises a hanger body, two ends of the hanger body are in threaded connection with two pipeline bodies, a fixing assembly is arranged on the outer surface of the hanger body, and the fixing assembly comprises two sets of arc-shaped reinforcing rings in contact with the pipeline bodies. According to the mandrel type casing hanger, the fixing assembly is arranged, traction of the pipeline body can be achieved through cooperation of an arc-shaped reinforcing ring and a nylon rope, threaded connection of the pipeline body and the hanger body is matched, the pipeline body can be locked in the hanger body, the pipeline body can still keep a stable state in the vibration working environment, and the practicability is high. The nylon rope not only can pull the arc-shaped reinforcing ring to enable the pipeline body to be kept in a stable state in the device body, but also can prevent the pipeline from being unwound through traction force on the pipeline body, so that the reliability of the whole structure is improved.

A hanger running assembly for a wellhead includes a hanger to support a casing. The hanger running assembly also includes a seal assembly with a push ring and a seal body to support one or more seal elements. The hanger running assembly further includes a torque tool coupled to the push ring via one or more shear pins, wherein rotation of the torque tool in a first direction while the one or more shear pins are intact causes rotation of the push ring in the first direction to thread onto the hanger.

A system including a casing hanger; a wellhead housing, including a landing shoulder configured to contact the casing hanger during installation of the casing hanger in a wellhead; a transducer disposed on an exterior of the wellhead housing, wherein the transducer is configured to emit an input pulse toward the landing shoulder; and an ultrasonic transmitter coupled to the transducer, wherein the ultrasonic transmitter is configured to detect the input pulse and one or more echo pulses associated with the input pulse.

A system includes a seal assembly 100 configured to retain a casing hanger within a wellhead. The seal assembly includes: a main body including at least one tapered surface on an upper end thereof; a

The utility model relates to the technical field of oil extraction, in particular to a novel oil sleeve packing synchronous suspension casing head device which comprises a mandrel type casing hanger assembly and a mandrel type oil pipe hanger assembly which are connected through a packing sealing sleeve. The packing sealing sleeve is arranged in the oil pipe four-way joint, the mandrel type casing pipe hanger assembly and the mandrel type oil pipe hanger assembly are inserted into the two ends of the oil pipe four-way joint respectively and connected with the packing sealing sleeve, the other end of the mandrel type casing pipe hanger assembly is inserted into the casing four-way joint, and the other end of the mandrel type oil pipe hanger assembly is inserted into the crossover flange. A sucker rod blowout preventer is connected to the upper portion of the crossover flange, and a slip is connected to the lower portion of the casing pipe four-way joint. The packing sealing sleeve is arranged in the oil pipe four-way joint and used for being communicated with the mandrel type casing pipe hanger assembly and the mandrel type oil pipe hanger assembly, and the sealing effect of the oil pipe four-way joint is further enhanced.

The utility model relates to the technical field of oil pipe hanger testing, in particular to a casing hanger PR2 testing tool which comprises a testing derrick, the testing derrick is in a well shape and used for installing an oil pipe hanger, and when the oil pipe hanger is installed on the testing derrick, a plug is located in an upper pipeline of the oil pipe hanger. The oil pipe assembly is located in a lower pipeline of the oil pipe hanger. The oil pipe hanger and the oil pipe assembly form a sealed pipeline space through the plug; the oil pipe assembly is fixedly connected with the displacement end of the displacement assembly. The stress direction of the oil pipe assembly generated through displacement of the displacement assembly is in the pipeline length direction of the oil pipe hanger. A pressure test opening is formed in the plug, the pressure test opening is used for communicating an external liquid pump with a pipeline space of the tubing hanger, and the external liquid pump introduces liquid into the pipeline space through the pressure test opening. According to the utility model, the technical problems of hanger load cycle test, hanger internal pressure test and hanger temperature and pressure cycle test of the casing hanger according to the PR2 test standard are solved.

The application provides an offline cementing device and an offline cementing method, and relates to the technical field of oil and gas development.The offline cementing device comprises an offline cementing device assembly, a conversion short circuit, a cementing head, a casing hanger, a sealing device and a downhole isolation valve.The casing hanger is used for suspending a casing in a well.The cementing head, the conversion short circuit, the offline cementing device assembly and the casing hanger are sequentially and fixedly connected from top to bottom.The sealing device is used for sealing an annular space close to a wellhead.The cementing head is used for connecting a cementing cement pipeline.The scheme provided by the application can fully utilize resources and improve drilling efficiency.

Techniques for implementing and / or operating a well system including a rotatable casing hanger and a rotatable running tool. The rotatable casing hanger includes a hanger body, which is to be secured to a casing string; a hanger sleeve secured circumferentially around the hanger body, in which the hanger sleeve is to be landed on another wellhead component; and a hanger bearing assembly disposed axially between the hanger body and the hanger sleeve. The rotatable running tool includes a tool body that defines a tool bore, in which the tool body is to be selectively secured to the hanger body; a tool sleeve secured circumferentially around the tool body to facilitate maintaining centralization of the tool body and, thus, the rotatable casing hanger; and a tool bearing assembly disposed between the tool body and the tool sleeve. 44805447 20 24 22 01 65 27 S ep 2 02 4 A B S T R A C T 2 0 2 4 2 2 0 1 6 5 2 7 2 0 2 4 S e p 4 4 8 0 5 4 4 7 4 / 14 10D M 54 56 12D 60 60 20 15D 42 40 20C 38C 34B 14D FIG. 4 20 24 22 01 65 27 S ep 2 02 4 1 5 D 6 0 5 6 3 4 B 1 4 D 1 2 D 6 0 2 0 4 2 4 0 2 0 C 3 8 C 2 0 2 4 2 2 0 1 6 5 2 7 S e p 2 0 2 4

A casing hanging and feeding tool comprises a lower body, a locking ring, a downward locking lining and an upper body which are sequentially nested on a mandrel from bottom to top, the end of the upper body is fixedly connected with a meniscus, and the meniscus is in limiting connection with the mandrel; a bearing step is arranged on the mandrel, a lower body is arranged on the bearing step, a plurality of fixing bolts are fixedly arranged on the lower body, the fixing bolts penetrate through the locking ring, the downward locking lining, the upper body and the half-moon plate to be connected with the lower body, the lower body and the half-moon plate are fixedly connected through the fixing bolts, and a first limiting groove is formed in the inner side wall of the lower body. A second limiting groove is formed in the mandrel, a plurality of limiting rings are arranged in the first limiting groove and the second limiting groove at the same time, and limiting ring pressing bolts are arranged on the limiting rings. The service tool has the advantages that during rotation of the mandrel of the service tool, the mandrel has no displacement relative to the lower body and the upper body in the vertical direction, torque build-up caused by vertical movement of the mandrel during rotation is avoided, and the probability of complex conditions is reduced.

A kind of water injection well pressurized water injection device, including polished rod, upper four-way, lower four-way, pressurized pump cylinder, inner pump cylinder and balance pump cylinder;The upper port of upper four-way is connected with seal, the upper port of lower four-way is connected with lower four-way, the left port is connected with liquid inlet valve, the right port is connected with the right port of lower four-way by liquid outlet valve;The upper port of lower four-way is installed with hanger, the lower port of lower four-way is connected with casing;Hanger extends into casing, pressurized pump cylinder is arranged in casing and is connected on hanger, pressurized pump cylinder is provided with pressurized plunger, balance pump cylinder is connected in the lower part of pressurized pump cylinder and is provided with balance plunger;Seal is connected with inner pump cylinder in lower part;Polished rod is inserted into seal and inner pump cylinder and is connected with inner plunger arranged in inner pump cylinder;Inner plunger, pressurized plunger, communication joint and balance plunger are sequentially connected from top to bottom, and communication hole is arranged on communication joint.The balance mechanism is formed, the upstroke load of pumping unit can be reduced, and the upstroke and downstroke load difference of pumping unit is reduced.

The present application relates to an expansion pipe type casing hanger, comprising a casing assembly and an inner pipe assembly located in the casing assembly, the casing assembly comprising an expansion pipe with a reduced diameter section, the inner pipe assembly comprising an expansion cone for expanding the reduced diameter section to seat the casing assembly, a hanger structure being provided between the casing assembly and the inner pipe assembly below the expansion cone for hanging the casing assembly on the inner pipe assembly, the hanger structure comprising a key and a slot for hanger cooperation with the key, one of the key and the slot being provided on the casing assembly and the other being provided on the inner pipe assembly, the key having a stop position for stop cooperation with the slot in the axial direction of the casing assembly and a release position for releasing the stop by being circumferentially offset from the slot when the inner pipe assembly is lowered and rotated. The present application solves the technical problem of the prior art that the weight of the casing assembly is limited, and the hanger structure can be released by lowering and rotating the inner pipe assembly, without increasing the operation difficulty too much.

This invention provides a hydraulic casing hanger and sealing assembly service tool and its usage method, relating to the field of oil and gas drilling and production technology. The tool includes: a body; an upper hydraulic cylinder fitted onto the upper part of the body; a lower hydraulic cylinder fitted onto the middle part of the body, with a locking ring disposed below the lower hydraulic cylinder; and hydraulic circuitry, including: an upper hydraulic cylinder drive circuit, injecting hydraulic oil to drive the upper hydraulic cylinder to move the sealing assembly suspension ring downwards to install the sealing assembly; an upper hydraulic cylinder reset circuit, injecting hydraulic oil to drive the upper hydraulic cylinder to move the sealing assembly suspension ring upwards; a lower hydraulic cylinder drive circuit, injecting hydraulic oil to drive the lower hydraulic cylinder downwards and force the locking ring to open and lock the casing hanger; and a lower hydraulic cylinder reset circuit, injecting hydraulic oil to drive the lower hydraulic cylinder upwards to allow the locking ring to elastically return to its original shape and separate the casing hanger. This invention enables precise installation of the sealing assembly and reliable locking and separation of the casing hanger, improving operational efficiency and reducing operational risks.

An annular seal system for sealing between a casing hanger and a wellhead housing, the system including an actuator ring having a rigid portion and a flexible portion, and a lockdown ring positioned adjacent the actuator ring. The annular seal system further includes a seal assembly capable of moving between a de-energized position and an energized position, wherein the seal assembly in the de-energized position has a defined a space between the seal assembly and the rigid portion of the actuator ring, wherein the seal assembly in the energized position has the space closed, wherein the rigid portion of the actuator ring is to contact a surface of the casing hanger, wherein the flexible portion of the actuator ring is to push the lockdown ring into engagement with the wellhead, and wherein the flexible portion of the actuator ring adapted is to axially compress to allow positional variation between the lockdown ring and the wellhead housing.

Techniques for implementing and / or operating a well system including a rotatable casing hanger and a rotatable running tool. The rotatable casing hanger includes a hanger body, which is to be secured to a casing string; a hanger sleeve secured circumferentially around the hanger body, in which the hanger sleeve is to be landed on another wellhead component; and a hanger bearing assembly disposed axially between the hanger body and the hanger sleeve. The rotatable running tool includes a tool body that defines a tool bore, in which the tool body is to be selectively secured to the hanger body; a tool sleeve secured circumferentially around the tool body to facilitate maintaining centralization of the tool body and, thus, the rotatable casing hanger; and a tool bearing assembly disposed between the tool body and the tool sleeve.

The application discloses a coaxial casing type water body heat storage system and method based on a shaft of a closed mine, and the shaft of the closed mine is sealed by a sealing section, a coaxial casing with a deep inner part and a shallow outer part is arranged at the center of a top sealing well lid, a cement ring is formed between an outer pipe and a shaft wall annulus, and a casing hanger is used to share the weight of the casing, a one-way valve and a perforated screen pipe are arranged at a specific depth of the inner pipe, and a bidirectional heat storage adaptive assembly is formed. The method uses natural rebounding underground water as a medium, switches a high-temperature heat source storage mode and a low-temperature heat source storage mode according to the relationship between the temperature of the heat source and the original ground temperature at the top surface of the sealing section, in a non-heating season, water is pumped through the outer pipe, heated and then recharged for heat storage, in a heating season, reverse circulation is used for heat release and heating, and the low-temperature mode can also be used to synchronously provide a summer cooling load. The application is adapted to the large-diameter and large-depth characteristics of the shaft, realizes large-scale cross-season heat storage, fully utilizes the remaining resources of the closed mine, reduces the heat storage cost, is adapted to multiple heat sources, relieves the time and space intermittence of renewable energy, and promotes the green and low-carbon transformation of the closed mine.

A system includes a seal assembly configured to retain a casing hanger within a wellhead. The seal assembly includes a main body; a lock ring coupled to the main body and configured to expand radially outward into a profile on an inner diameter of the wellhead; and an actuator, wherein the actuator is capable of transferring an axial force from the actuator into outward radial expansion of the lock ring until a tapered portion of the lock ring directly contacts a corresponding tapered portion of the profile, regardless of an initial distance from the lock ring to the profile prior to actuation of the lock ring.

A lockdown sleeve and a running tool that may be used to install the lockdown sleeve within a wellhead in a single trip are provided. The lockdown sleeve, may include two pieces that are rotatably coupled together via threads such that the axial length of the lockdown sleeve can be adjusted by rotation of one portion of the lockdown sleeve relative to the other. The running tool may lower the lockdown sleeve into the wellhead, actuate the lockdown sleeve to lock against an inner wall of the high-pressure wellhead housing and subsequently adjust the length of the lockdown sleeve so that the lockdown sleeve is fully landed on the casing hanger and applying any desired pre-load to the connection.

The invention relates to an anti-scratch protection device and method for a small flat cable hung and penetrating through an electric submersible pump sleeve. According to the technical scheme, the lower end of a casing hanger is movably connected with a casing coupling, the upper end of the casing hanger is movably connected with an oil pipe pup joint, a protector is fixed to the outer wall of the oil pipe pup joint through a plurality of steel belt clamps, and a copper pipe penetrates through the upper end of the casing hanger to be upwards connected to the protector along the outer wall of the oil pipe pup joint. The inner cavity of the protector is provided with a plurality of cable installation axial grooves, and the upper ends of the copper pipes are fixed in the cable installation axial grooves. The method has the advantages that field operation of a construction team is facilitated; the small flat cable penetrating out of the casing hanger is in butt joint with the large flat cable, and then the protector is installed and fixed, so that the situation that a steel belt clip for bundling and fixing the power cable rubs against the inner wall of a shaft to fall into the well and scratches the cable without armor sheath protection can be avoided, the probability that the cable is damaged is reduced, the maintenance and construction cost of an oil well is reduced, and the non-production time of the oil well is shortened; and the oil well production time rate and yield are improved.

A system comprising a seal assembly for retaining a casing hanger within a wellhead. The seal assembly includes a lock ring configured to expand radially outward into a profile on an inner diameter of

Techniques for an improved wellhead. The wellhead includes a casing hanger that suspends a casing string within a wellbore, a casing head, a retainer ring assembly, and a radial retainer fastener. The casing hanger includes external hanger threading that interlocks with internal tool threading in a casing running tool to facilitate manipulating the casing hanger via the casing running tool. The retainer ring assembly includes an external retainer groove and internal ring threading that interlocks with the external hanger threading on the casing hanger after the casing running tool is disconnected from the casing hanger to facilitate securing the retainer ring assembly to the casing hanger. The radial retainer fastener is secured through a radial fastener opening in the casing head into the external retainer groove on the retainer ring assembly to facilitate securing the casing head to the retainer ring assembly and, thus, the casing hanger.

A hold-down ring assembly for a spooless wellhead housing includes a ring body configured to engage a first casing hanger and a second casing hanger to block separation of the first casing hanger and the second casing hanger from one another along an axial axis. The hold-down ring assembly includes multiple annular seal elements configured to seal against the second casing hanger. The hold-down ring assembly also includes one or more plugs configured to fit within one or more respective cement return openings of the second casing hanger. The multiple annular seal elements and the one or more plugs are configured provide a double pressure barrier across the one or more respective cement return openings of the second casing hanger.

A system includes a casing hanger that includes a first castellated profile and a casing string that includes a second castellated profile such that the first castellated profile is configured to assemble with the second castellated profile to form a mechanical rotational locking feature configured to enable transfer of a rotational torque between the casing hanger and the casing string.

The top locking device comprises a driving ring, a locking ring, a threaded pressing ring, an upper body and a lower body, the inner side of the upper end of the lower body is in threaded connection with the outer side of the lower end of the upper body, and the lower end of the threaded pressing ring is in threaded connection with the corresponding position of the outer side of the upper body. The whole axial clearance self-adjusting function of the locking device is achieved, the bottom of the inner side of the upper end of the threaded pressing ring conducts guiding limiting on a lower end protruding structure of the driving ring, accidental unlocking of the locking ring is avoided, a sealing face is arranged on the upper portion in the upper body, two seals are arranged on the outer portion of the upper body, and bidirectional annular space sealing is achieved. An inverted-L-shaped groove is further formed in the lower side of the inner side of the upper body so that the inverted-L-shaped groove can be in butt joint with an installation tool, installation and recovery of the locking device are facilitated, reliable axial locking is achieved through the whole top locking device of the self-adjusting casing hanger with the sealing function, the integrity of a well mouth can be guaranteed, and the reliability of the ocean well mouth is improved.

The utility model discloses an underwater mud line casing hanger bearing structure, which relates to the technical field of drilling equipment and comprises a first hanger body provided with a first shoulder. A second hanger body is arranged in the first hanger body in a sleeved mode, the second hanger body is provided with a first limiting ring borne on the first circular bead, and a second circular bead is arranged on the inner wall of the second hanger body. A third hanger body is arranged in the second hanger body in a sleeved mode, a second limiting ring borne on the second circular bead is arranged on the outer wall of the third hanger body, a clamping groove is formed in the inner wall of the third hanger body and matched with a hanging assembly, and a fourth hanger body is arranged in the hanging assembly. The second hanger body, the third hanger body and the fourth hanger body are connected with the first casing pipe, the second casing pipe and the third casing pipe through the annular grooves, and the technical problems that reliable sealing and connection are difficult to achieve in the installation and use process of a traditional casing pipe hanger, consequently, equipment is frequently replaced, and the oil exploitation cost is increased are solved.

This invention relates to a device that replaces the installation position function of a 13-3 / 8” casing hanger, comprising a body, a knurled support shoulder, a pressure relief hole, a casing hanger support shoulder, a flow channel groove, a suspension key, and an anti-rotation threaded hole. The body has a hollow cavity, with the knurled support shoulder and pressure relief hole at the lower part of the body, and the pressure relief hole located below the knurled support shoulder. The inner wall of the hollow cavity has a suspension key and a flow channel groove, which are spaced adjacent to each other. The anti-rotation threaded hole is located on the circumference of the body and penetrates the flow channel groove. The upper part of the hollow cavity has a casing hanger support shoulder for seating a 9-5 / 8” casing hanger. This invention ensures that the 9-5 / 8” casing hanger can be correctly seated in the original position of the high-pressure wellhead inner bore without the 13-3 / 8” casing hanger being installed.

A hanger running assembly for a wellhead includes a hanger to support a casing. The hanger running assembly also includes a seal assembly with a push ring and a seal body to support one or more seal elements. The hanger running assembly further includes a torque tool coupled to the push ring via one or more shear pins, wherein rotation of the torque tool in a first direction while the one or more shear pins are intact causes rotation of the push ring in the first direction to thread onto the hanger.

The utility model discloses a detachable and reusable casing hanger, and belongs to the technical field of oil and gas drilling and production equipment. The hanger aims at solving the problem that an existing hanger cannot be disassembled without damage and reused. The C-shaped casing hanger body is made of an elastic metal material and provided with a notch, and the annular retention sleeve is arranged above the C-shaped casing hanger body. During installation, the retention sleeve is rotated to apply axial pressure to the hanger body, so that the hanger body moves downwards along the inclined surface of the inner wall of the casing head and is tightened in the radial direction, and a casing is clamped; and during disassembly, the retention sleeve is reversely rotated to relieve the pressure, and the hanger body is automatically bounced off and loosened by virtue of self elasticity. The device is simple in structure and convenient to mount and dismount, can realize complete lossless dismounting and reutilization, and remarkably reduces the operation cost and the material consumption.

The invention provides a hydraulic power-assisted casing hanger and seal assembly service tool and a using method thereof, and relates to the technical field of oil and gas drilling and exploiting. The lining sleeves the middle part of the outer side of the core shaft; the anti-rotation block is mounted in the anti-rotation block mounting groove; the main body comprises an upper body and a lower body, the lining is sleeved with the upper body, and a hydraulic cavity is formed between the lining and the upper body; the lower body is connected with the mandrel and is provided with a connecting structure for connecting a casing hanger; the driving lining sleeves the outer side of the upper body and can axially slide along the outer surface of the upper body; a suspension screw is mounted on the outer side wall and is used for suspending the sealing assembly; the shell is arranged on the outer side of the driving bush, and a sealing cavity is formed between the shell and the driving bush; a through hole is formed in the side wall of the upper body, one end of the hole communicates with the hydraulic cavity, and the other end communicates with the sealing cavity. The device can adapt to a small-size well mouth, and the casing hanger and the sealing assembly can be installed in a one-time drilling mode without an extra power source.