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| Application No. | Application Title | Issue Date |
| 20120103625 | SUBSEA WELLHEAD KEYLESS ANTI-ROTATION DEVICE An anti-rotation device prevents an inner wellhead housing from rotating within an outer wellhead housing. The anti-rotation device provides cam rollers within the inner wellhead housing that wedge between opposing surfaces of the inner wellhead housing and outer wellhe... | 05/03/2012 |
| 20120048567 | MODULAR SUBSEA COMPLETION A system, in certain embodiments, includes a subsea tree and a tubing spool including a longitudinal bore configured to receive a tubing hanger. The tubing spool also includes a lateral flow passage extending from the longitudinal bore and configured to transfer product... | 03/01/2012 |
| 20120024536 | WELLHEAD TREE PRESSURE LIMITING DEVICE A pressure relief device is used to relieve pressure in a void within a wellhead housing. In one embodiment, the pressure relief device includes a plunger having a stepped plug, wherein the plug can be fully open to allow flow from the void, restricted to allow a predet... | 02/02/2012 |
| 20120012329 | Method of fixing a broken oil pipe The usual safety feature of oil pipes is the shut-off valve. Whenever there is a need, such a valve can be closed, and oil is prohibited from spilling into the surroundings. However, the shut-off valve may sometimes be inaccessible. It may be buried deep in the mud, or ... | 01/19/2012 |
| 20120000667 | SUBSEA WELLHEAD ASSEMBLY Subsea wellhead assembly with an inner bore for conduction of produced hydrocarbons, equipped with a cooling means for cooling a section of the well-head assembly exposed to heating by said hydrocarbons.... | 01/05/2012 |
| 20110315392 | SUBSEA APPARATUS An apparatus (10) for remotely running a subsea production tree (12) and desuspending a well is described. The apparatus comprises a tree running tool (16) adapted to be connected to a production tree, at least one downhole tool, at least one of the... | 12/29/2011 |
| 20110300008 | COMPACT CABLE SUSPENDED PUMPING SYSTEM FOR LUBRICATOR DEPLOYMENT A method of installing or retrieving a pumping system into or from a live wellbore includes connecting a lubricator to a production tree of the live wellbore and raising or lowering one or more downhole components of the pumping system from or into the wellbore using th... | 12/08/2011 |
| 20110290502 | Capping deep water oil leaks A deep water system to control oil leakage on the ocean floor consists of two main parts. The two parts are common geometric shapes. The shapes are a torus and a sphere. A torus is placed on the ocean floor, enclosing the drill entry site (or leak area) within its inner... | 12/01/2011 |
| 20110290500 | Apparatus and Method for Recovering Fluids From a Well and/or Injecting Fluids Into a Well Methods and apparatus for diverting fluids either into or from a well are described. Some embodiments include a diverter conduit that is located in a bore of a tree. The invention relates especially but not exclusively to a diverter assembly connected to a wing branch o... | 12/01/2011 |
| 20110266003 | Subsea Control Module with Removable Section Having a Flat Connecting Face A subsea device is configured to control a subsea well. The subsea device includes a frame; a blowout preventer connected to the frame; a pressure supply line configured to provide a fluid under pressure; and a control module configured to receive the fluid from the pre... | 11/03/2011 |
| 20110259596 | Configurations and Methods for Improved Subsea Production Control Systems and methods of production control are contemplated in which one or more multiphase flow meters are operationally coupled to a production conduit to provide flow and compositional information for the fluid in the production conduit. Data from the multiphase flow ... | 10/27/2011 |
| 20110259597 | WELLHEAD HAVING AN INTEGRATED SAFETY VALVE AND METHOD OF MAKING SAME A wellhead for subsea use and a method of making same where the wellhead is constituted by a body having a bore (3) therethrough and at least one side bore (9, 11) for provision of fluid communication through the wall of the wellhead (1), and where ... | 10/27/2011 |
| 20110253381 | SUBSEA WELLHEAD WITH SEGMENTED FATIGUE REDUCTION SLEEVE A subsea wellhead comprises a generally cylindrical body including a lower extension for forming an annular space for a cement column between the lower extension and an outer conductor. The extension carries a multiplicity of interfitting rings forming a sleeve which fa... | 10/20/2011 |
| 20110226483 | APPARATUS AND METHOD FOR RECOVERING FLUIDS FROM A WELL AND/OR INJECTING FLUIDS INTO A WELL Methods and apparatus for diverting fluids either into or from a well are described. Some embodiments include a diverter conduit that is located in a bore of a tree. The invention relates especially but not exclusively to a diverter assembly connected to a wing branch o... | 09/22/2011 |
| 20110147001 | WELLHEAD ANNULUS MONITORING A subsea wellhead assembly comprises a production casing hanger (2) defining a series of passageways (20-24) from an annulus (B) between a production casing string and an outer casing (8) to a region (16) which can communicate, for exa... | 06/23/2011 |
| 20110139460 | HYDROCARBON PRODUCTION SYSTEM, METHOD FOR PERFORMING CLEAN-UP AND METHOD FOR CONTROLLING FLOW The present invention relates to a device for transmitting fluid from a subsea producing module (8) to a subsea receiving module (9) comprising a choke valve (3) in a main flowpath (7) of the fluid. A bypass line (2) is arranged in par... | 06/16/2011 |
| 20110139461 | ASSEMBLY FOR USE IN A CHRISTMAS TREE The assembly comprises a housing (1) having a first end having an inlet channel and a second end having an outlet channel, said channels being connected by a central passage (3), said housing further comprising a side-entry bore (2) providing commun... | 06/16/2011 |
| 20110114330 | Combination Well Pipe Centralizer and Overpull Indicator A subsea wellhead assembly includes an outer wellhead member with a bore containing at least one conical generally upward facing load shoulder that inclines relative to an axis of the bore. The outer wellhead member also contains an overpull recess having a generally do... | 05/19/2011 |
| 20110114326 | MULTI-PIECE STACKED SEALING SYSTEM AND METHOD OF USING SAME Subsea wells have a variety of proprietary well head configurations that require sophisticated locking and sealing profiles that allow the well bore to be sealed off and the production of hydrocarbons to be safely controlled. A universal tubing hanger and lockdown assem... | 05/19/2011 |
| 20110056696 | SUBSEA DRILLING A subsea cutting device for a subsea blow-out preventer or wellhead comprises a tubular body having an axial throughbore, and configured to be fitted to a casing string, the cutting device further comprising a shearing mechanism in the form of a radial cutting system ro... | 03/10/2011 |
| 20110017467 | Multi-Section Tree Completion System A subsea well production system for a well including a subsea wellhead. The system includes a multi-section production tree that includes a landing section engageable with the subsea wellhead and including a landing section bore. The tree also includes a valve section s... | 01/27/2011 |
| 20110005770 | SUBSEA CONTROL SYSTEM A technique enables protection of subsea wells. The technique employs a subsea test tree and associated control system to ensure control over the well in a variety of situations. The subsea test tree may be formed with an upper portion releasably coupled to a lower port... | 01/13/2011 |
| 20100307763 | SUBSEA HORIZONTAL CHRISTMAS TREE The present invention relates to a horizontal Christmas tree comprising a central bore (72) and a horizontal outlet (70) extending laterally from the central bore. A tubing hanger (74) is locked into the central bore and connected to a production tu... | 12/09/2010 |
| 20100300700 | Wellhead Assembly An assembly for use on a wellhead includes a tree body including an internal main bore arranged in use to be aligned with the bore of a wellhead housing; the tree body including a lateral bore extending through the tree body from the internal bore; the tree body further... | 12/02/2010 |
| 20100230110 | WELL UNLOADING PACKAGE A method of unloading a well using a modular adapter having a pump, a pump suction line, and a pump discharge line. The adapter is connected to a subsea wellhead assembly so that the pump suction line communicates with a main bore in the wellhead assembly and the pump d... | 09/16/2010 |
| 20100206576 | Apparatus and Method for Recovering Fluids From a Well and/or Injecting Fluids Into a Well Methods and apparatus for diverting fluids either into or from a well are described. Some embodiments include a diverter conduit that is located in a bore of a tree. The invention relates especially but not exclusively to a diverter assembly connected to a wing branch o... | 08/19/2010 |
| 20100206575 | Self-Energizing Annular Seal An annular seal assembly for forming a seal between two annular surfaces. The seal assembly includes an annular base including a sealing surface. The seal assembly also includes a pair of spaced apart rims extending from the annular base opposite the base sealing surfac... | 08/19/2010 |
| 20100084136 | Power Slip Assembly for Wellhead Casing and Wellbore Tubing A power slip extends a joint from tubing disposed in casing at a well so that a casing head can install on the casing and the tubing can be packed-off from the casing. The joint attaches to an inner sleeve having collet members that fit onto the inner tubing so that the... | 04/08/2010 |
| 20100078176 | Combined Tree Stab and Control Interface A subsea wellhead assembly provided over a wellbore, the assembly having a wellhead housing, a tubing hanger in the housing, a production tree on the wellhead housing above the tubing hanger, and a control circuit that passes axially downward from the production tree an... | 04/01/2010 |
| 20100078174 | STRESS DISTRIBUTING WELLHEAD CONNECTOR In accordance with certain embodiments, the present inveniton provides a connector for attaching to a multi-toothed profile on a wellhead features a tooth profile that staggers loading preferably starting at a loading surface furthest from the connector body sitting on ... | 04/01/2010 |
| 20100071907 | ACCUMULATOR FOR SUBSEA EQUIPMENT Pressure-balanced accumulator apparatus for use in subsea operations is disclosed which comprises a housing and an accumulator within the housing at the first end of the housing. The accumulator has first and second chambers that are hermetically sealed from one another... | 03/25/2010 |
| 20100051286 | OPTICAL SENSING SYSTEM FOR WELLHEAD EQUIPMENT A system includes a Christmas tree assembly mounted to a hydrocarbon well, an optical feedthrough module, and a plurality of optical sensors. The optical feedthrough module is operable to communicate through a pressure boundary of the Christmas tree assembly. The plural... | 03/04/2010 |
| 20100006301 | Open Water Recoverable Drilling Protector A method and system for retrieving a wear bushing from within a subsea wellhead assembly. The system includes a retrieval tool deployable on a wireline that inserts within the bushing. Latches on the tool radially project outwards and mate with a groove on the bushing i... | 01/14/2010 |
| 20100006298 | High Capacity Wellhead Connector Having a Single Annular Piston A wellhead connector for connecting a riser or production tree to a wellhead of a subsea well utilizes a singular annular piston to lock the connector onto the wellhead. The wellhead connector includes a housing that contains dogs for engagement with the exterior of the... | 01/14/2010 |
| 20090294131 | Christmas Tree and Wellhead Design The device described herein combines a subsea wellhead and a tree mandrel into a single piece. The wellhead includes a tree valve block having an upper and lower section. The lower valve block section is integral with the wellhead and includes access between the product... | 12/03/2009 |
| 20090266551 | LOW PROFILE INTERNAL TREE CAP An internal tree cap having a running configuration and a latched configuration to be selectively secured to a tree spool. The tree cap may include an inner sleeve movable between upper and lower positions. The movement of the inner sleeve to the lower position may simu... | 10/29/2009 |
| 20090260832 | Non-Orientated Tubing Hanger With Full Bore Tree Head A subsea wellhead assembly includes a wellhead housing, a production tree, a tubing hanger adapted to land in the wellhead assembly inside the wellhead housing without a need for angular orientation, a bridge member on the tubing hanger in the production tree, a port ra... | 10/22/2009 |
| 20090255682 | Large Bore Vertical Tree A subsea wellhead assembly that includes a wellhead housing, a production tree, a tubing hanger adapted to land in the wellhead assembly inside the wellhead housing, and a bore formed through the production tree having an inner diameter greater than the tubing hanger ou... | 10/15/2009 |
| 20090223674 | Integrated Electrical Connector For Use In A Wellhead Tree A wellhead assembly having a data sensor circuit for transmitting sensed data from within a wellbore to the well surface. The circuit includes a signal conduit axially inserted within the wall of a stab unit with connectors at the top and bottom portions of the stab uni... | 09/10/2009 |
| 20090211762 | Detachable Electrical Actuator A removable module for actuating elements, such as valves, within a subsea production tree. The module can include a motor, a drive shaft, and a ball screw. Embodiments exist where only the motor is removable, optionally the motor and drive shaft and/or all module eleme... | 08/27/2009 |
