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| Number | Title | Issue Date |
| 7654328 | Subsea compressor module and a method for controlling the pressure in such a subsea compressor module A subsea gas compressor module having a housing comprising a sealing element generally defining within the pressure housing a first compartment holding as compressor and a second compartment holding an electric motor, the compressor and motor being driveably connect... | 02/02/2010 |
| 7393158 | Shrink for centralizer assembly and method A centralizer system is provided for use in a marine riser system, the centralizer being preferably heat-shrink fitted to an upset portion of a keel joint, the upset portion having tapered sections on the upper and lower ends that gradually blend into the outer diam... | 07/01/2008 |
| 7363982 | Subsea well production flow system Methods and apparatus for flowing a subsea well. The method comprises the steps of: supplying a multi-phase medium from a subsea tree 18 to a removable separator package 10; separating the multi-phase flow into one or more phases at the desired pressur... | 04/29/2008 |
| 7314086 | 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... | 01/01/2008 |
| 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 |
| 7261164 | Floatable drill cuttings bag and method and system for use in cuttings disposal In aspects, embodiments of the present invention provide devices, systems and methods for managing cuttings formed during drilling of a subsea wellbore. By managing, it is meant the processing, storage, transportation and disposal of the cuttings. In an exemplary ap... | 08/28/2007 |
| 7234523 | Hydraulic friction fluid heater and method of using same A method and apparatus for heating a portion of a subsea structure is provided. The method includes pumping a fluid through a length of tubing such that the temperature of the fluid increases. The temperature increase of the fluid is created by friction in the tubin... | 06/26/2007 |
| 7222674 | 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... | 05/29/2007 |
| 7216715 | 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 |
| 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 |
| 7210530 | Subsea separation system A preferred embodiment of the inventive fluid delivery system comprises a vertical liquid/vapor separator and riser assembly that comprises a multi-phase separator inlet, a vapor outlet and riser, and a liquid outlet port connected to a hydraulically-driven centrifu... | 05/01/2007 |
| 7200540 | System and method for automated platform generation Systems for implementing methods for generating platform location sets comprising selecting a set of platform locations; determining additional platform locations to add to the set of platform locations; validating the additional platform locations, and determining ... | 04/03/2007 |
| 7185705 | System and method for recovering return fluid from subsea wellbores A subsea return fluid recovery system for recovering drilling fluid and cuttings (“return fluid”) from a subsea wellbore in one embodiment includes a hub at the opening of the subsea wellbore that directs fluid into a transport device. In one embodiment, the hub... | 03/06/2007 |
| 7137451 | Controlling and/or testing a hydrocarbon production system A system for use in controlling and/or testing an underwater hydrocarbon production system, has a number of control modules for controlling well trees. The control modules are provided, not at the trees, but at a control center for location underwater. The trees are... | 11/21/2006 |
| 7137453 | Remote operated actuator system for drill string internal blowout preventer An air swivel ring includes a non-rotating member having an air inlet, a rotating member having an air outlet, and a split seal having a first sealing surface and coupled to one of the non-rotating member and the rotating member so that the first sealing surface on ... | 11/21/2006 |
| 7134498 | Well drilling and completions system A system for use in down hole operations, the system comprising a wellhead; a BOP ram package connected at one end to the wellhead and having an axial bore extending from the wellhead to the other end; a device above the other end of the BOP ram package for isolatin... | 11/14/2006 |
| 7070360 | Apparatus and method The invention provides a protective structure for a subsea installation. The protective structure comprises first and second body portions and a hinge member. The body portions are pivotally mounted to the hinge member such that at least one of the body portions may... | 07/04/2006 |
| 7062960 | Blow out preventer testing apparatus The consequences of any failure of a blow out preventer assembly to operate correctly in an emergency can be far reaching. Thus, there is provided an apparatus for registering parameters in the bore of a member which is, in use, connected to a pressurised housing, t... | 06/20/2006 |
| 7051804 | Subsea protective cap A cap for covering an open upper end of a subsea structure includes a base and a body. The base has a size, after shrinkage, at least slightly larger than the exterior of the open upper end of the subsea structure. The body is connected to the base and projects down... | 05/30/2006 |
| 7044228 | Flowline jumper for subsea well A subsea well system has a flowline jumper that extends between components on the sea floor. The jumper has connectors on each end for connecting to the two components and has a curved portion. At least a portion of the jumper is buoyant to cause it to assume a vert... | 05/16/2006 |
| 7036596 | Hydraulic friction fluid heater and method of using same A method and apparatus for heating a portion of a subsea structure is provided. The method includes pumping a fluid through a length of tubing such that the temperature of the fluid increases. The temperature increase of the fluid is created by friction in the tubin... | 05/02/2006 |
| 7025133 | Multiple bore christmas tree outlet A large bore Christmas tree includes a production outlet that is split into multiple separate outlets, each controlled by a separate, standard sized valve and valve actuator. ... | 04/11/2006 |
| 6998724 | Power generation system A system for generating an electrical power output from a subsea installation that includes at least one flowline, wherein the system includes a turbine that is operatively connected to the flowline, the turbine being rotatable by fluid flowing through the flowline,... | 02/14/2006 |
| 6907933 | Sub-sea blow case compressor A sub-sea submersible compressing apparatus having at least one compressor tank. A compressor tank is configured to receive gas from a gas/liquid separator and has an inlet for water. The compressor further comprises a pump to pump water from the compressor tank the... | 06/21/2005 |
| 6907326 | Autonomous surf zone line charge deployment system A system and method autonomously clears obstacles and mines from an approach lane. A ship is distantly located from an approach lane spanning a surf zone and beach portion, and the ship has operator control station software in an onboard computer. At least one syste... | 06/14/2005 |
| 6889770 | Method for thermally protecting subsea installations, and apparatus for implementing such thermal protection Method for protecting subsea installations against cooling which leads to hydrate formation, in particular during production halts. This is achieved by thermally isolating portions of the installation (1) against the surrounding water (2), and particul... | 05/10/2005 |
| 6796379 | Drilling waste handling A method and an apparatus for storage and transport of drilling waste is provided. A number of storage containers (12) are anchored to the sea bed by means of anchors (15) and cables (13). The location of the containers (12) is marked wit... | 09/28/2004 |
| 6622793 | Method for carrying out operations on petroleum and gas fields and deep-sea platform for realizing the same A method for carrying out operations on petroleum and gas fields is provided. The method involves using a platform which is located underwater when in working position at a depth where it is not subject to storm waves or under the lower surface of an ice ... | 09/23/2003 |
| 6564873 | Apparatus for offshore production of hydrocarbon fluids An apparatus for offshore production of hydrocarbon fluids is disclosed. The apparatus comprises a base and a buoyant structure secured to said base and connected or adapted to be connected to a subsea well or wells. The key characteristics of the apparat... | 05/20/2003 |
| 6457526 | Sub sea bottom hole assembly change out system and method The components required for changing out a bottom hole assembly are stored within a submerged storage chamber adjacent the lower end of a riser extending up from the bottom of a body of water. A vertical, revolving magazine holds the bottom hole assembly ... | 10/01/2002 |
| 6341572 | Explosion prevention system for internal turret mooring system A method and apparatus for ensuring against explosion of the gaseous atmosphere of a closed chamber, such as the QDCD room of an internal turret of an offshore production and offloading buoy wherein the closed chamber has production risers and conduit con... | 01/29/2002 |
| 6182762 | Storm valve A method and apparatus for temporarily storing the lower portion of a string of drill pipe in a well which has a cased portion wherein a packer, installed between a storm valve located below the packer and an actuator located above the packer, is set in t... | 02/06/2001 |
| 6102124 | Flying lead workover interface system Flying lead hydraulic and electrical umbilical arrangements are disclosed for control of a subsea christmas tree for production and workover operations. Alternative arrangements for deep water ROV arrangements for a conventional christmas tree are illustr... | 08/15/2000 |
| 5992526 | ROV deployed tree cap for a subsea tree and method of installation A lightweight ROV deployable tree cap (28) for deployment on a subsea production hub (10) of a subsea tree. A tree cap (28) has a lightweight body (30) with parallel planar sides and including suitable openings and slots for mounting of the various operat... | 11/30/1999 |
| 5894890 | Normally closed retainer valve with fail-safe pump through capability A retainer valve provides increased safety in wellsite operations. In a preferred embodiment, operation of the retainer valve may be responsive to control line pressure or to tubing pressure. The retainer valve response is controlled by several factors, a... | 04/20/1999 |
| 5884708 | Normally closed retainer valve with fail-safe pump through capability A retainer valve provides increased safety in wellsite operations. In a preferred embodiment, operation of the retainer valve may be responsive to control line pressure or to tubing pressure. The retainer valve response is controlled by several factors, a... | 03/23/1999 |
| 5884707 | Normally closed retainer valve with fail-safe pump through capability A retainer valve provides increased safety in wellsite operations. In a preferred embodiment, operation of the retainer valve may be responsive to control line pressure or to tubing pressure. The retainer valve response is controlled by several factors, a... | 03/23/1999 |
| 5884703 | Normally closed retainer valve with fail-safe pump through capability A retainer valve provides increased safety in wellsite operations. In a preferred embodiment, operation of the retainer valve may be responsive to control line pressure or to tubing pressure. The retainer valve response is controlled by several factors, a... | 03/23/1999 |
| 5860478 | Sub-sea test tree apparatus Apparatus and a method for killing a live well after activation of a well blowout preventer is described. This is achieved by providing apparatus in the form of a shear or kill sleeve (34) in a string (26) above a sub-sea test tree and which is located be... | 01/19/1999 |
| 5810515 | Protective device for an installation mounted on the seabed A means (20) for protecting a device (2) which a installed on the sea bed (11) and projects up therefrom. The means comprises a central section (21) which is arranged to be attached to the upper section (9) of the device (2), and legs (22) which are linke... | 09/22/1998 |
