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| Number | Title | Issue Date |
| 8181704 | Riser emergency disconnect control system An emergency riser disconnection system for disconnecting a riser from a subsea installation having disconnect actuators and a signal and power circuit for controlling the actuators. The signal and power circuit is made up of an umbilical with signal lines and hydra... | 05/22/2012 |
| 8141643 | Method and frame A method of installing equipment subsea comprising the steps of: assembling the equipment within a frame; submerging in the sea at least a part of an assembly comprising the frame and the equipment; coupling the at least partially submerged assembly to a vessel; tra... | 03/27/2012 |
| 8096364 | Umbilical deployment system A method for providing an umbilical connection for a well installation, the well installation being located at the bed or floor of a body of water, comprises the steps of providing an umbilical with first and second ends and prior to operative deployment of the umbi... | 01/17/2012 |
| 8016042 | Stress distributing wellhead connector In accordance with certain embodiments, the present invention 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... | 09/13/2011 |
| 8006763 | Method and system for installing subsea insulation Provided herein is a system and method for installing subsea insulation on flowlines, connectors and other subsea equipment by a remotely operated vehicle. This system provides a mold designed and built to suit the parameters of the subsea item to be insulated. The ... | 08/30/2011 |
| 7984764 | 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 ano... | 07/26/2011 |
| 7886827 | 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 m... | 02/15/2011 |
| 7802624 | Stabplate connections An underwater stabplate connection is provided by lowering a counterbalanced first part of the connection in a horizontal disposition by a lift line, the first part being attached to an umbilical. The first part of the connection mates with a second part of the conn... | 09/28/2010 |
| 7770649 | Locking device A locking device for locking an exchangeable unit in an insertion opening of an associated housing, particular in maritime mineral oil or mineral gas extraction, comprises locking elements adjustable between an insertion opening and a locking position, wherein in it... | 08/10/2010 |
| 7743832 | Method of running a tubing hanger and internal tree cap simultaneously During the completion of a subsea horizontal tree, a tubing hanger and internal tree cap are run together with the same running tool and running string. The running tool has a linking assembly that connects the tree cap to the tubing hanger during running, retrieval... | 06/29/2010 |
| 7690433 | Modular, distributed, ROV retrievable subsea control system, associated deepwater subsea blowout preventer stack configuration, and methods of use A distributed function control module adapted for use in a modular blowout preventer (BOP) stack for use subsea comprises a housing, adapted to be manipulated by a remotely operated vehicle (ROV) with a stab portion adapted to be received into a BOP stack control mo... | 04/06/2010 |
| 7673690 | Method and apparatus for dynamic application management in sub-sea well installations A method for updating a software of a sub-sea controller (31) located under the sea level. The sub-sea controller manages a plurality of tools in a sub-sea well. An application module (35) is downloaded into the sub-sea controller. The application modu... | 03/09/2010 |
| 7650942 | Sub sea control and monitoring system A system for monitoring and/or controlling at least one device mounted on a tubing string of a well, the system comprising: a down-well cable for conveying a signal to and/or from at least one device mounted on a tubing string of a well; a temporary surface cable fo... | 01/26/2010 |
| 7647973 | Collapse arrestor tool A tool is employed with a subsea wellhead assembly for preventing the collapse of a wear bushing located in a drill-through tubular member due to external test forces being applied to it. The tool has a connector that connects to the drill-through tubular member. A ... | 01/19/2010 |
| 7614453 | Stress distributing wellhead connector In accordance with certain embodiments, the present invention 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... | 11/10/2009 |
| 7591315 | Subsea riser disconnect and method A subsea riser disconnect assembly 10 may be actuated from a drilling rig DR by axial movement of an upper riser 35 relative to a lower riser 28, for disconnecting the upper riser 35 from the lower riser 28. A subsea riser valve as... | 09/22/2009 |
| 7513308 | Tubing running equipment for offshore rig with surface blowout preventer An apparatus for performing operations on an offshore well includes a subsea wellhead assembly. A riser extends from the subsea wellhead assembly to a surface vessel. A tool connects to a running string and is lowered through the riser into the wellhead assembly for... | 04/07/2009 |
| 7419006 | Apparatus for protecting wellheads and method of installing the same An apparatus and method for protecting wellheads of a fixed-leg drilling and production platform which provide an alternative from the shutting in of producing wells as currently required. The apparatus provides a structural barrier for the production process system... | 09/02/2008 |
| 7380835 | Single bore high flow junction plate Described herein a single bore, high flow junction plate and flow line assembly adapted for use subsea. This junction plate may be adapted for use with a torque tool manipulated by a remotely operated vehicle (“ROV”). ... | 06/03/2008 |
| 7357184 | Jacking frame having a wellhead centralizer and method of use A jacking frame for an oil well offshore platform is provided that includes a support structure; a coiled tubing injector supported by the support structure and having a longitudinal axis; and a centralizer attached to the support structure, which moves a wellhead o... | 04/15/2008 |
| 7350589 | Telemetering system A pipe installation system has a pipe composed of sections that are added and removed to increase and decrease a length of the pipe. The system further has a cable storage spool for stowing a length of cable in a compact manner inside the pipe and for paying out the... | 04/01/2008 |
| 7331394 | Autonomous well intervention system A self-contained well intervention system which can be deployed from a lightweight vessel and coupled directly to a wellhead is described. The system includes valve means for providing a suitable well barrier and sealing the intervention system to allow an emergency... | 02/19/2008 |
| 7331793 | Magnetic connector A connector (30) can include a housing (32), a plurality of magnets (14) within the housing used for data transfer and at least one alignment magnet (16 or 18) within the housing used for proper alignment and polarity. The connecto... | 02/19/2008 |
| 7318480 | Tubing running equipment for offshore rig with surface blowout preventer A method performing an operation in a subsea wellhead assembly through a riser extending between the wellhead assembly and a surface platform includes the step of connecting a surface blowout preventer to an upper portion of the riser. Then a tool is connected to a ... | 01/15/2008 |
| 7316430 | Connecting mechanism A connecting mechanism for two parts, which are at least partially insertable into one another, presents a cam-operated component, which runs on bearings and which is adjustable between a passive and an active position, on the one part, for shifting a number of cont... | 01/08/2008 |
| 7311035 | Subsea hydraulic junction plate actuator with R.O.V. mechanical override The invention relates to the field of offshore subsea oil and gas drilling and production operations. Specifically the invention relates to a hydraulically and/or mechanically driven junction plate actuator suitable for use in connecting and/or disconnecting a dynam... | 12/25/2007 |
| 7308934 | Fracturing isolation sleeve An apparatus operatively coupled to a well having a production casing positioned therein, the apparatus including a first device having and internal bore, a second device having an internal bore, and a fracture isolation sleeve disposed at least partially within the... | 12/18/2007 |
| 7308943 | Well operations system A wellhead has, instead of a conventional Christmas tree, a spool tree in which a tubing hanger is landed at a predetermined angular orientation. As the tubing string can be pulled without disturbing the tree, many advantages follow, including access to the producti... | 12/18/2007 |
| 7287935 | Tendon assembly for mooring offshore structure An offshore system for petroleum production has a buoyant platform. A tendon assembly secures to the platform and extends down to a counterweight located near the lower end. A piling is embedded in the sea floor. A socket at the counterweight telescopingly slides ov... | 10/30/2007 |
| 7264057 | Subsea intervention A method and system of subsea intervention comprises lowering one or more assemblies of intervention equipment into the sea. Underwater marine units (such as remote operated vehicles or small submarines) may be employed to connect the assemblies to each other and to... | 09/04/2007 |
| 7243729 | Subsea junction plate assembly running tool and method of installation The invention relates to a running tool for subsea junction plate assembly installation. The invention further relates to a method for installing a junction plate assembly using the running tool of the present invention. ... | 07/17/2007 |
| 7239781 | Composite fiber radial compression members in an umbilical The present inventions relate generally to umbilicals comprising at least one inner tube and at least one composite fiber element to provide greater resistance to radial compressive forces. Such umbilicals may be used in subsea hydrocarbon production applications. | 07/03/2007 |
| 7234524 | Subsea chemical injection unit for additive injection and monitoring system for oilfield operations A system monitors and controls the injection of additives into formation fluids recovered through a subsea well. The system includes a chemical injection unit and a controller positioned at a remote subsea location. The injection unit uses a pump to supply one or mo... | 06/26/2007 |
| 7225877 | Subsea intervention fluid transfer system A system for subsea transfer of intervention fluids to a subsea intervention apparatus, the system, in certain aspects, including a structure and a frame pivotably mounted thereto, a plurality of frame fluid conduits on the frame for conducting fluid from a connecto... | 06/05/2007 |
| 7219740 | Well production and multi-purpose intervention access hub A well production and multi-purpose intervention access hub for flowing fluids from multiple wells to a host facility through a flowline. The hub comprises a production header module and a flowline header module configured for fluid communication with the flowline. ... | 05/22/2007 |
| 7216714 | Modular, distributed, ROV retrievable subsea control system, associated deepwater subsea blowout preventer stack configuration, and methods of use A distributed function control module adapted for use in a modular blowout preventer (BOP) stack for use subsea comprises a housing, adapted to be manipulated by a remotely operated vehicle (ROV) with a stab portion adapted to be received into a BOP stack control mo... | 05/15/2007 |
| 7216699 | Sub mudline abandonment connector An inner tubular member of a subsea wellhead assembly carries a locking member that moves between a locked and unlocked positions lands within an outer tubular member having a grooved profile in its bore. The inner tubular member joins to a portion of the conductor ... | 05/15/2007 |
| 7210531 | Protective element for a riser segment A protective element for a riser segment, including an elongated buffer body, at least one foot connected with the buffer body, the at least one foot being provided with an engagement part arranged to engage on a main pipe of a riser segment, the distance between th... | 05/01/2007 |
| 7182132 | Linearly scalable geothermic fuel cells A ceramic fuel cell(s) is supported in a heat conductive interconnect plate, and a plurality of plates form a conductive heater named a stack. Connecting a plurality of stacks forms a stick of fuel cells. By connecting a plurality of sticks end to end, a string of f... | 02/27/2007 |
| 7183742 | Unmanned underwater vehicle fuel cell powered charging system and method A charging system for an unmanned underwater vehicle (UUV) is disposed within a submerged docking station. The charging system includes a battery, a fuel cell, a fuel source, and a charge controller. The battery supplies electrical power to an electrical distributio... | 02/27/2007 |
