| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 166348000 | Connection of pipe hanging | 34 |
| 20080251256 | TIEBACK SEAL SYSTEM AND METHOD - Disclosed herein is a method of sealing a tieback to a tubular. The method includes, positioning a metal deformable member of the tieback within a tubular and contacting the tubular with a sleeve of the tieback. Moving the sleeve in a first axial direction thereby contacting and radially deforming a first portion of the deformable member by axially compressing the deformable member and sealably engaging the tubular with the radially deformed first portion. | 10-16-2008 |
| 20080264643 | LIGHTWEIGHT DEVICE FOR REMOTE SUBSEA WIRELINE INTERVENTION - In one illustrative embodiment, the present invention is directed to a device adapted to be positioned adjacent an end of a tool housing of a subsea lubricator, wherein the device includes a structural member that is adapted to be positioned adjacent an end of the tool housing, a non-metallic body coupled to the structural member and a sealing device that is adapted to sealingly engage a wireline extending through the sealing device. The present invention is also directed to a method which includes lowering an assembly toward a tool housing of a subsea lubricator positioned subsea using a wireline for the tool to support a weight of the assembly, wherein the assembly includes a wireline tool and a device including a structural member that is adapted to be positioned adjacent the end of a tool housing, a non-metallic body coupled to the structural member, and a sealing device that is adapted to sealingly engage a wireline extending through the sealing device. | 10-30-2008 |
| 20080308278 | ADJUSTABLE THREADED HANGER AND RUNNING TOOL - An adjustable hanger for retaining in tension casing and tubing extending between a subsea wellhead and a surface wellhead on a platform. | 12-18-2008 |
| 20090211761 | Oil and gas well completion system and method of installation - A completion system, and a corresponding method, for completing a subsea well, where the well includes a wellhead and a tubing hanger disposed in the wellhead and supports a string of production tubing, allows for angular alignment-free assembly of the subsea well. The completion system includes a series of circumferential channels formed in a well completion device at a boundary between the tubing hanger and the well completion device. The circumferential channels provide complete circular fluid paths with respect to the tubing hanger and the well completion device. At least one supply bore is in communication with each circumferential channel and is and oriented to supply a fluid to the circumferential channel, and at least one drain bore in communication with each circumferential channel and is oriented to remove fluid from the circumferential channel. Finally a circumferential electrical connector couples the tubing hanger and the completion device. The circumferential channels and bores provide fluid services between the completion device and the tubing hanger and the electrical connector provides electrical services to the tubing hanger. The completion system allows the fluid and electrical services to be provided without requiring any angular alignment between the tubing hanger and the completion device. | 08-27-2009 |
| 20100243261 | Rotation Mechanism - A system for rotating an element inside a pressure containing housing. In some embodiments, the mechanism includes a pressure containing housing having an opening through a wall of the housing into an internal chamber in which, in use, the element to be rotated is located, a bushing located within the opening, and a worm gear rotatably mounted in the bushing. The worm gear is offset from the axial centre of the bushing such that rotation of the bushing moves the worm gear between an extended position, wherein the thread of the worm gear engages an element in the chamber, and a retracted position, wherein the thread is disengaged from the element in the chamber. | 09-30-2010 |
| 20110083854 | CASING HANGER NESTING INDICATOR - A casing hanger nesting indicator generates a signal to notify personnel on the surface that a wellhead member has properly landed on a predetermined surface within the wellbore. The casing hanger nesting indicator comprises a signaling device such as an explosive charge or a frequency shift key wherein the noise or vibration of the signaling device travels through the wellbore, via the drilling conduit in some embodiments, up to the surface platform. | 04-14-2011 |
| 20110108280 | Method of testing a drilling riser connection - The method of providing flotation modules on subsea drilling riser joints comprising providing flotation modules as a full circle, installing said flotation modules sequentially onto the end of the central pipe of said drilling riser joints in a desired orientation, providing passageways through said flotation modules which extend from one end of said subsea drilling riser joints to the other end of said drilling riser joints. | 05-12-2011 |
| 20110147001 | WELLHEAD ANNULUS MONITORING - A subsea wellhead assembly comprises a production casing hanger ( | 06-23-2011 |
| 20110209877 | APPARATUS FOR, AND METHOD OF, LANDING ITEMS AT A WELL LOCATION - An apparatus for, and method of, lowering items from a drilling rig to a well located below it through the use of a landing string comprised of drill pipe having an enlarged diameter section with a shoulder, in combination with upper and lower holders having wedge members with shoulders that engage and support the drill pipe at the shoulder of the enlarged diameter section, the shoulder of the drill pipe and the shoulders of the wedge members being rotatable with respect to each other. | 09-01-2011 |
| 20110240306 | Bridging Hanger and Seal Running Tool - A running tool sets and pressure tests a bridging hanger and a packoff in a single trip. The running tool has a stem, an inner body, and a piston. The inner body is connected to the stem so that rotation of the stem relative to the inner body will cause the stem to move longitudinally. The piston is connected to the stem so that the stem and piston rotate and move longitudinally in unison. A piston engagement element is housed in the inner body and is adapted to engage the piston when the bridging hanger is set to prevent premature setting of the packoff. The piston engagement element can be disengaged once the bridging hanger is set, thereby allowing the piston to set the packoff. | 10-06-2011 |
| 20110240307 | Wellhead Hanger Shoulder - A well production system including a wellhead and a first casing string supported from a first casing hanger landed on a shoulder in the wellhead bore. A loading shoulder assembly is installable in the wellhead and includes an energizing ring, a loading ring threaded into the interior of the energizing ring, a lock ring, and a hold-down ring threaded into the interior of the loading ring. The hold-down ring engages the first casing hanger to prevent rotation of the hold-down ring and restrain rotation of the loading ring. The lock ring is expandable from an unset position into supporting engagement with the wellhead in a set position upon rotation of the energizing ring. The hold-down ring is also moveable axially out of the loading ring to restrain the first casing hanger. | 10-06-2011 |
| 20110247828 | FLUID DISPLACEMENT METHODS AND APPARATUS FOR HYDROCARBONS IN SUBSEA PRODUCTION TUBING - The method for subsea well intervention includes creating a lubricator section within the production tubing of the well. The lubricator section can then be flushed of hydrocarbons facilitating further well intervention from the open water. An intervention device that facilitates flushing production tubing that has equipment, such as electric submersible pumps, is deployed in the wellhead, for example in the valve tree. | 10-13-2011 |
| 20110284234 | APPARATUS AND METHODS FOR PROVIDING TUBING INTO A SUBSEA WELL - In some embodiments, apparatus useful for providing tubing into an underwater well includes at least one surface injector configured to control movement of the tubing into and out of the well and at least one underwater injector configured to apply pushing and pulling forces to the tubing. | 11-24-2011 |
| 20120097399 | EXPANDABLE ANCHORING MECHANISM - A bridging hanger with an expandable anchoring mechanism lands on a casing hanger in a subsea wellhead and actuates to anchor to the casing hanger. The anchoring mechanism includes a tubular main body, and a tubular sealing sleeve. The tubular sealing sleeve is coaxial with and mounted on an exterior diameter portion of the tubular main body. The body is moveable from an upper run-in position to a lower set position relative to the sealing sleeve. The anchoring mechanism also includes a first and second locking ring, both carried by the sealing sleeve. The first locking ring engages a profile within an interior of the casing hanger in response to movement of the main body from the run-in to the set position. The second locking ring locks the tubular main body in the set position in response to movement of the main body from the run-in to the set position. | 04-26-2012 |
| 20120186821 | LOCATION-AND-ROTATION FEEDBACK TOOL FOR SUBSEA WELLHEADS AND METHOD OF OPERATING SAME - A location-and-rotation feedback tool that provides accurate feedback of the location and orientation of a well component during running operations in wells. The feedback tool device is adapted to be secured on a tool stem above a running tool and comprises a body, a circumferentially extending groove, and a hole in the groove that vents to the bore of a blowout preventer. The circumferential groove aligns with a fluid line port in the blowout preventer to provide location feedback via a fluid line pressure. The hole aligns with the fluid line port in the blowout preventer to provide rotation feedback via fluid line pressure. | 07-26-2012 |
| 20120193104 | COILED TUBING MODULE FOR RISERLESS SUBSEA WELL INTERVENTION SYSTEM - A method for riserless intervention of a subsea well includes connecting an intervention assembly to a bottom hole assembly (BHA). The BHA is connected to coiled tubing. The method further includes lowering the intervention assembly to a blowout preventer (BOP) fastened to a subsea production tree using an injector of a support vessel engaged with the coiled tubing; fastening the intervention assembly to the BOP; slacking the coiled tubing using the vessel injector; engaging a stripper of the intervention assembly with the coiled tubing; and driving the BHA through the tree and into a wellbore using a subsea injector of the intervention assembly while synchronizing both injectors to maintain the slack in the coiled tubing. | 08-02-2012 |
| 20120211236 | System and Method for High-Pressure High-Temperature Tieback - A high-pressure, high-temperature tieback system including a production casing tieback tool consisting of a ratchet-latch sleeve disposed in a recessed portion of an annular extension of increased wall thickness of the production casing tieback tool and a production casing mudline hanger disposed about the production casing tieback tool. The production casing tieback tool is configured to directly engage the production casing mudline hanger. The ratchet-latch sleeve is configured to directly engage a threaded axial segment of a tubular other than the production casing mudline hanger. | 08-23-2012 |
| 20120222866 | TUBING HANGER - PRODUCTION TUBING SUSPENSION ARRANGEMENT - A tubing hanger body made from Non-CRA steel coupled to production tubing made from CRA material. The coupling includes pin threads at the top end of the production tubing which are arranged to be screwed into box threads of the tubing hanger body. A seal sub having metal-to-metal and/or elastomeric seals engages the top end of the production tubing and protects the tubing hanger body from contact with production fluid flowing from the production tubing below to a Christmas tree tubing above. The invention includes a method of repairing of an existing tubing hanger body where its through bore has been damaged. This allows the through bore to be over machined and a CRA sleeve installed to replace tubing threads and body material. | 09-06-2012 |
| 20120241162 | CASING HANGER LOCKDOWN SLIP RING - A seal seals an annulus in a subsea assembly between a wellhead and a casing hanger landed on a shoulder within a bore of the wellhead. The seal includes a casing hanger seal ring disposed within the annulus. The seal ring engaged with an inner diameter surface of the wellhead, and engaged with an outer diameter surface of the casing hanger so that the seal ring prevents flow through the annulus. A lockdown slip ring is secured to a lower end of the seal ring so that, when the seal ring is energized, the lockdown slip ring engages a substantially smooth inner diameter surface portion of the wellhead and a substantially smooth outer diameter surface portion of the casing hanger to limit upwards axial movement of the casing hanger. | 09-27-2012 |
| 20120261132 | LEAD IMPRESSION WEAR BUSHING - A wear bushing having a lead impression block is landed axially above a casing hanger and actuated to test an elevation of lock ring grooves formed in a wellhead. Then, drilling operations are performed through the wear bushing. The wear bushing includes a first tubular member having an axis and a second tubular member coaxial with the first tubular member. The second tubular member moves down to actuate a lead impression assembly to measure an elevation within the wellhead with the lead impression block. After the drilling operations are completed, the deformed lead impression block is retrieved along with the wear bushing. | 10-18-2012 |
| 20120312542 | EXPANDABLE SOLID LOAD RING FOR CASING HANGER - A subsea wellhead assembly includes a housing with a bore. A hanger is lowered into the housing, the hanger having at least one downward facing load shoulder. An expandable load ring is carried on the hanger. When casing weight is applied to the hanger, the weight energizes the load ring, causing it to expand and thereby increase the contact area between a load shoulder on the load ring and a load shoulder on the housing. The shoulders create a path for the load to be transferred to the housing. The increase in contact area increases the load carrying capacity of the hanger. The load ring expansion is limited to elastic expansion to allow it to return to a retracted position when the casing weight is removed. | 12-13-2012 |
| 20130037271 | Bridging Hanger and Seal Running Tool - A running tool sets and pressure tests a bridging hanger and a packoff in a single trip. The running tool has a stem, an inner body, and a piston. The inner body is connected to the stem so that rotation of the stem relative to the inner body will cause the stem to move longitudinally. The piston is connected to the stem so that the stem and piston rotate and move longitudinally in unison. A piston engagement element is housed in the inner body and is adapted to engage the piston when the bridging hanger is set to prevent premature setting of the packoff. The piston engagement element can be disengaged once the bridging hanger is set, thereby allowing the piston to set the packoff. | 02-14-2013 |
| 20130068466 | LATCHING MECHANISM WITH ADJUSTABLE PRELOAD - A well pipe hanger is run and landed within a subsea wellhead assembly using a latching mechanism with an adjustable preload. The well pipe hanger has a latch ring having upward and downward facing shoulders secured to the outer diameter of the tubing hanger so that the latch ring may expand radially into a groove of the landing sub. The outer and inner diameters of the latch ring are larger at a center of the latch ring than at the upper and lower ends. The latch ring is configured to contract radially from a latched to an unlatched position in response to a predetermined overpull force. The predetermined overpull force is adjustable by adjusting the radial distance between an axial center of the latch ring and the outer diameter of the well pipe hanger. | 03-21-2013 |
| 20130126181 | MULTIPLEX TUBING HANGER - A subsea wellhead assembly having a tubing hanger set in a tubing hanger spool and a ring with axial passages set in an upper end of the tubing hanger. The wellhead assembly includes a production tree that lands on the tubing hanger spool. Tubing extends from the axial passages in the ring through axial bores provided in a sidewall of the tubing hanger. When landed, a lower end of the production tree engages an upper surface of the ring causing the ring to rotate and align its axial passages with axial passages in the production tree. The respective lower and upper surfaces of the tree and ring are strategically castellated to orient the passages. | 05-23-2013 |
| 20130213661 | WEAR BUSHING FOR LOCKING TO A WELLHEAD - A wear bushing ( | 08-22-2013 |
| 20130228339 | APPARATUS FOR, AND METHOD OF, LANDING ITEMS AT A WELL LOCATION - An apparatus for, and method of, lowering items from a drilling rig to a well located below it through the use of a landing string comprised of drill pipe having an enlarged diameter section with a shoulder, in combination with upper and lower holders having wedge members with shoulders that engage and support the drill pipe at the shoulder of the enlarged diameter section, the shoulder of the drill pipe and the shoulders of the wedge members being rotatable with respect to each other. | 09-05-2013 |
| 20130248196 | HIGH-CAPACITY SINGLE-TRIP LOCKDOWN BUSHING AND A METHOD TO OPERATE THE SAME - A high capacity single trip lockdown bushing and a method to operate the same is disclosed. The lockdown bushing includes a tubular body that carries a locking ring and an energizing ring about an upper portion of the tubular body. The energizing ring includes a cam portion interposed between the locking ring and the tubular body so that the cam portion and the locking ring overlap along mating cam surfaces in an unset position. A running tool carries the lockdown bushing to land on a casing hanger. The running tool is actuated to drive the energizing ring downward so that the mating cam surfaces interact to move the locking ring radially outward into engagement with wickers formed in a wellhead. | 09-26-2013 |
| 20130341032 | SUBSEA WELLHEAD - The present invention provides a wellhead securement arrangement including a first inner casing string | 12-26-2013 |
| 20140048277 | SUBSEA PRODUCTION SYSTEM WITH DOWNHOLE EQUIPMENT SUSPENSION SYSTEM - A subsea production system for a well including a subsea production tree, a tubing hanger, and a production tubing extending into the well and supported by the tubing hanger. A downhole equipment suspension system includes a suspension head supported directly or indirectly by the production tree above and separately from the tubing hanger. The suspension system also includes downhole equipment inside the production tubing below the tubing hanger and a suspension line extending through the tubing hanger vertical production bore and the production tree vertical bore. The suspension line suspends the downhole equipment from the suspension head. | 02-20-2014 |
| 20140345873 | TUBING HANGER WITH COUPLING ASSEMBLY - A tubing hanger ( | 11-27-2014 |
| 20150021035 | TUBING HEAD SPOOL ACTUATION THROUGH LANDING STRING - A landing string for landing a tubing hanger in a tubing spool has flow lines for actuating annulus access valves. A tubing string depends from the tubing hanger, and projects into a wellbore lined with casing when the tubing hanger is landed. Piping outside of the tubing spool connects to a bore formed through the tubing spool to provide access to an annulus between the tubing string and casing. The annulus access valve is in the flow line to control flow to the annulus. The valve is driven by an actuator that is operated by fluid in a flow line ported through the landing string, and in communication with the tubing spool when the tubing hanger is landed. | 01-22-2015 |
| 20150053412 | Production System Including Tubing Hanger with Valve - A subsea completion system for a subsea well includes a tubing spool including an internal bore formed therethrough and a tubing hanger movable into a landed position within the internal bore of the tubing spool. The tubing hanger includes a production bore formed therethrough, an auxiliary passage formed therethrough outside of the production bore, and a valve in fluid communication with the auxiliary passage to control the flow of fluid through the auxiliary passage. | 02-26-2015 |
| 20150060078 | SUBSEA DRILLING WITH CASING - A method of forming a wellbore includes providing a drilling assembly comprising one or more lengths of casing and an axially retracting assembly having a first tubular; a second tubular at least partially disposed in the first tubular and axially fixed thereto; and a support member disposed in the second tubular and movable from a first axial position to a second axial position relative to the second tubular, wherein, in the first axial position, the support member maintains the second tubular axially fixed to the first tubular, and in the second axial position, allows the second tubular to move relative to the first tubular; and an earth removal member disposed below the axially retracting assembly. The method also includes rotating the earth removal member to form the wellbore; moving the support member to the second axial position; and reducing a length of the axially retracting assembly. | 03-05-2015 |
| 20150315852 | Adjustable Mudline Tubing Hanger Suspension System - An adjustable mudline suspension system, including a tubing hanger having an exterior profile, a clamp having an inner profile to mate with the exterior profile of the tubing hanger, a biasing element to bias the clamp radially inward into an engaged position where the inner and exterior profiles are mated, and a piston to bias the clamp radially outward into a disengaged position where the inner and exterior profiles are not mated when hydraulically actuated. The weight of the tubing hanger is supported by the adjustable mudline suspension system when the interior profile of the clamp mates with the exterior profile of the hanger. | 11-05-2015 |
