91 results about "Casing hanger" patented technology

Systems and methods for landing a tubing hanger in a wellhead and then orienting a tree (or spool, or flowline connection body) relative to the tubing hanger while landing the tree on the wellhead are provided. This alignment is accomplished without the use of either a tubing spool or a BOP stack with an orientation pin. The tubing hanger alignment devices may be used to orientate the tree as the tree is landed so that the couplings and stabs between the tree and the tubing hanger line up with each other just at the moment of landing. A space-out mechanism is provided to take up any gaps formed axially by being picked up, thus rigidizing the tubing hanger and casing hanger within the wellhead.

The invention relates to the technical field of sealing devices, in particular to an ocean deepwater oil and gas exploitation sealing device which comprises a sealing ring, a clamping connection pressing ring and a downward-pressing driving ring, and the downward-pressing driving ring is connected with a feeding tool in a clamped mode through a plurality of locking rods. According to the well head sealing device, locking between the sealing ring and the well head is achieved, locking between the pressing-down driving ring and the casing hanger is also achieved, the sealing device is connected with the well head and the casing hanger in a clamped mode, when shaking occurs, the probability of separation is reduced, and upward extraction and separation between the sealing device and the well head and between the sealing device and the casing hanger are avoided. When the thrust sleeve on the feeding tool presses the clamping pressing ring downwards, the clamping pressing ring drives the guide plate to vertically slide downwards, so that clamping between the locking rod and the feeding tool can be separated, that is, after the sealing device is installed, the sealing device and the feeding tool can be separated, and a breaking point does not need to be arranged.

The invention belongs to the technical field of gas production wellhead devices, and particularly relates to an ultrahigh pressure gas production wellhead device without any rubber seal, which comprises a four-way pipe, a manual gate valve, a throttle valve, an instrument flange, an anti-shock pressure gauge, a hydraulic safety valve, a separation pressure reduction assembly, an upper flange, a casing head body and a casing hanger assembly, a sealing gasket ring I and a sealing gasket ring II are respectively arranged between the upper flange and the casing hanger assembly, and the casing hanger assembly is respectively connected with an inner cavity of the casing head body through an inner metal sealing ring I, an outer metal sealing ring I, an inner metal sealing ring II and an outer metal sealing ring II. Compared with rubber sealing, the metal sealing structure has higher stability. And the metal sealing element can bear high pressure and cannot generate permanent deformation or lose sealing capacity, so that the gas production device can be suitable for a worse gas production working condition, the frequency of shutdown maintenance caused by damage of the sealing element is reduced, and the continuity and efficiency of gas production operation are improved.

The utility model relates to the field of offshore oil and gas drilling, and discloses a mud line suspension system suitable for a high-temperature and high-pressure environment, an outer-layer casing hanger body is fixed on a riser through a first seating shoulder, a middle-layer casing hanger body is fixed on the outer-layer casing hanger body through a second seating shoulder, and the middle-layer casing hanger body is fixed on the riser through a second seating shoulder. The inner-layer casing hanger body is fixed on the middle-layer casing hanger body through a ratchet-shaped buckle; the upper portion of the outer-layer casing hanger body, the upper portion of the middle-layer casing hanger body and a lowering tool are sealed through a metal coating and a metal sealing ring, and the upper portion of the inner-layer casing hanger body and a lowering tool are sealed through an arc-shaped conical surface double-V metal sealing structure. Through reasonable structural layout, sealing arrangement, material selection and thread screwing length, the mud line suspension system can be well suitable for a high-temperature and high-pressure harsh environment, and the overall strength and the connection reliability are effectively improved.

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.

The invention relates to a hoop type fast-assembly well head device and an installation method thereof, the hoop type fast-assembly well head device comprises a well head device body, the well head device body is provided with an installation groove, and a plurality of sealing grooves are formed in the groove wall of the installation groove; the casing hanger is mounted at the bottom of the mounting groove, a casing hanger main sealing piece is arranged on the casing hanger, and the casing hanger main sealing piece is connected with the corresponding sealing groove; the rotary sealing sleeve is installed on the upper portion of the casing hanger, a first sealing assembly is arranged on the rotary sealing sleeve, and the first sealing assembly is connected with the corresponding sealing groove; the oil pipe hanger is installed on the upper portion of the rotary sealing sleeve, a rotary expansion assembly and a second sealing assembly are arranged on the oil pipe hanger, the rotary expansion assembly is installed outside the rotary expansion assembly, and the second sealing assembly is connected with the corresponding sealing groove. Compared with the prior art, the problems of sealing failure and installation failure caused by the fact that the hanger is not installed in place can be prevented, and therefore the installation efficiency is improved.

The utility model discloses an underwater wellhead annular sealing assembly which is arranged in an annular area between a high-pressure wellhead and a casing hanger and comprises a metal sealing body, an inner locking ring and an upper driving ring. The metal sealing body is provided with an outer side sealing point on the upper side and an inner side sealing point on the lower side, and the inner locking ring is arranged on the upper side of the metal sealing body in a sleeving mode and aligned with the outer side sealing point in position. When the metal sealing body is put down, the inner side sealing point firstly makes contact with the casing hanger through interference fit and activates the inner side seal, loads in the seal activation process are dispersed, and only the self weight of the metal sealing body and interference fit are used. The upper drive ring is lowered between the inner lock ring and the metal seal body, and the outer seal is activated by locking the inner lock ring. According to the step-by-step activation mechanism, the large load needed by simultaneous activation of seals on the two sides in a traditional design is avoided, and therefore the overall load in the seal activation process is reduced. The asymmetric structure design of the inner and outer sealing points effectively reduces the axial driving force.

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.

A casing hanger and seal system for supporting a casing string in a hydrocarbon well. The hanger can have a deformable seal with an ability to transfer force through the seal to a lower portion of the hanger. The hanger can have multiple slips which engage a casing wall and support an upper casing string independent from the deformable seal such that changes in the forces being supported cannot disengage the seal when positioned.

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 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.

A cementing system includes an inner string configured to be received into a casing string in a wellbore. The cementing system also includes a stinger coupled to the inner string and configured to be received into a float shoe connected to the casing string. The cementing system also includes a first retractable joint coupled to the inner string. The retractable joint is configured to reduce in axial length so as to permit at least part of stinger to be withdrawn from engagement with the float shoe while a weight of the inner string is supported by a hanger running tool and casing hanger connected to the casing. The inner string, the stinger, and the retractable joint form at least a part of a flowpath that extends through an end of the casing string at the float shoe.

The utility model discloses a casing head device with a variable inner cavity step. The casing head device comprises a casing head body, a plurality of sets of jackscrew assemblies and a plurality of sets of slip assemblies. A casing inner cavity and a mounting hole are formed in the casing head main body; the mounting holes are circumferentially arranged at intervals along the axis perpendicular to the inner cavity of the sleeve; each jackscrew assembly is movably connected with the corresponding mounting hole, and the axis of each jackscrew assembly is perpendicular to the axis of the inner cavity of the sleeve; the slip assembly comprises a plurality of slips, each slip is installed on the corresponding jackscrew assembly, so that the plurality of slips form a circular ring, each jackscrew assembly drives each slip to move in the direction perpendicular to the axis of the inner cavity of the casing pipe, the inner diameter size of the slip assembly is adjusted, and the inner cavity of the casing pipe of the casing pipe head body forms a step. Therefore, the diameter of the casing hanger can be adapted. The operation condition that the hanger step of the inner cavity of the casing head needs to be adjusted or retracted due to various reasons can be solved, the operation is simple and reliable, and the operation cost and time can be reduced.

A casing hanger recovery tool 10 comprising a body 12, a pressure operated locking assembly 14 and a pressure operated latch assembly 16, wherein a retainer 44, 50 is configured to prevent movement of

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 utility model relates to an anti-blocking casing head for a deep coal bed gas horizontal well, which belongs to the field of oil and gas production wellhead devices and comprises a casing head body, a mandrel type casing hanger and a sealing component. The casing head body is coaxially arranged outside the mandrel type casing hanger in a sleeved mode, and the mandrel type casing hanger is connected with the casing head body in a sealed mode through the sealing assembly. The mandrel type casing hanger is in threaded connection with the production casing, and the inner drift diameter d2 of the mandrel type casing hanger is larger than or equal to the inner drift diameter d1 of the production casing 1; the casing head body is provided with a plurality of discharge ports, and the plurality of discharge ports are all located below the mandrel type casing hanger; the range of the inner diameter d of at least one discharge port is 2d3 < = d < = d1; wherein d is the inner diameter of the discharge port; d1 is the inner drift diameter of the production sleeve; d3 is the radial clearance of the outer annulus of the production casing. According to the utility model, the drift diameter of the discharge port of the casing head is reasonably set, so that the feasibility of replacing a slip type hanger with a mandrel type casing hanger is improved.

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.

The utility model provides a mandrel type casing hanger, relates to casing hanger technical field, including suspension shock absorption subassembly and butt joint positioning mechanism, the both ends side of suspension shock absorption subassembly is equipped with the sheathing part of cup joint installation, the inner side of suspension shock absorption subassembly is equipped with the butt joint positioning mechanism of penetrating cup joint, and the butt joint positioning mechanism is equipped with the sleeve part of the butt joint positioning mechanism. The butt joint positioning mechanism comprises inner end ring bases, threaded strips, third nuts, an upper grooved pipe, an upper grooved ring, a lower inserted pipe and an upper inserted ring. The inner end ring bases are arranged at the two ends of the inner side of the suspension damping assembly. According to the utility model, the annular distribution structure of the inner end ring seat is mainly utilized, so that the third nut is matched with the upper threaded strip to carry out folding operation on the upper receiving groove pipe, the upper receiving groove ring, the lower receiving insertion pipe and the upper receiving insertion ring, and a plurality of groups of grooves and bulges are folded, so that lubricating oil can be effectively sealed in equipment, and the sealing effect is good. And the lubricant can be effectively prevented from overflowing, so that the anti-wear period of equipment is prolonged while the burden of a user is reduced.

The application discloses a vertical milling machine with lifting adjusting function for sleeve hanger processing, which comprises a processing platform, first conveying components and second conveying components are arranged above and below the feeding through hole of the processing platform, respectively, conveying ball screws symmetrically arranged at both sides of the inner upper end of the processing platform are connected with the lower end side of a moving seat through ball nut seats, a clamping baffle is arranged on the outer side above a through groove in the middle of the moving seat, and a turnover frame is arranged in the inner side of the clamping baffle and connected with the clamping baffle through connecting shafts arranged at the middle of both sides of the turnover frame. The vertical milling machine with lifting adjusting function for sleeve hanger processing drives the connecting shafts and the turnover frame to rotate in the inner side of the clamping baffle through a driving motor, so that the workpiece is turned over, the other end can be processed without disassembly, the processing efficiency is improved, and the safety in use is improved because the splashes are not easy to fly when the clamping baffle and the clamping baffle are clamped.

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 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.