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| Number | Title | Issue Date |
| 7798232 | Connecting compliant tubular members at subsea locations A technique facilitates formation of connections between compliant tubular members and subsea facilities. A compliant tubular member is deployed to a subsea location in a manner that arranges the compliant tubular member in a curvilinear shape. The distal end of the... | 09/21/2010 |
| 7434624 | Hybrid tension-leg riser This invention provides a production riser system that enables fluid communication in a deepwater drilling environment through the use of a variable buoyancy device supporting both a hybrid riser tower and an steel catenary riser (SCR) system. Fluid communication is... | 10/14/2008 |
| 7373985 | Two-part telescopic tensioner for risers at a floating installation for oil and gas production A tensioning device (15) for a riser (5) connecting a subsea borehole (7) with a floating installation (1) on the surface of the sea (11), where the tensioning device (15) is provided with telescoping tubes (27, 27′... | 05/20/2008 |
| 7367410 | Method and device for liner system Method for drilling and lining a well wherein at least one liner (1, 2, 32) with a larger external diameter than the substantial part of a drilling riser (10) is pre-installed at a point below the substantial part of the drilling riser (10). A b... | 05/06/2008 |
| 7314087 | Heave compensation system for hydraulic workover The present invention relates generally to offshore drilling and production operations, and, more particularly, to marine drilling workover/intervention tensioning and compensating devices and methodologies. A heave compensated hydraulic workover device and/or syste... | 01/01/2008 |
| 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 |
| 7287389 | Feeding energy to a gas terminal from a ship for transporting liquefied gas The invention relates to feeding a gas terminal with energy from a ship transporting liquefied gas while said liquefied gas is being transferred between a tank of the ship and a tank of the gas terminal, wherein a portion of the energy produced by the propulsion sys... | 10/30/2007 |
| 7275594 | Stab guide A tool string stab guide for axially aligning first tool string components with second tool string components is disclosed. The stab guide has a body with an axial length along a longitudinal axis with a first and a second section. The first section of the body adap... | 10/02/2007 |
| 7270185 | Drilling system and method for controlling equivalent circulating density during drilling of wellbores A drilling system for drilling subsea wellbores includes a tubing-conveyed drill bit that passes through a subsea wellhead. Surface supplied drilling fluid flows through the tubing, discharges at the drill bit, returns to the wellhead through a wellbore annulus, and... | 09/18/2007 |
| 7252159 | Underwater rock boring apparatus having differential global positioning system receiver and boring method thereof The present invention relates to an underwater rock boring apparatus having differential global positioning system receiver and boring method thereof, new boring technology—a satellite navigation device orients the accurate position of a target—is brought to the... | 08/07/2007 |
| 7240734 | System and method for fail-safe disconnect from a subsea well A system and method for controllably separating a conduit into an upper portion and a lower portion. The system includes a first valve in the upper portion of the conduit above a point of separation, and a second valve in the lower portion of the conduit below the p... | 07/10/2007 |
| 7240736 | Drilling and producing deep water subsea wells Subsea wells are drilled and completed with an offshore floating platform in a manner that allows simultaneous work on more than one well. A first well is drilled and casing. Then a tubing hanger is run through a drilling riser and landed in the wellhead housing. Th... | 07/10/2007 |
| 7234527 | System and method for fail-safe disconnect from a subsea well A system and method for controllably separating a conduit into an upper portion and a lower portion. The system includes a first valve in the upper portion of the conduit above a point of separation, and a second valve in the lower portion of the conduit below the p... | 06/26/2007 |
| 7231981 | Inline compensator for a floating drill rig An apparatus and method for protecting against the problems associated with heave of a floating drilling rig are disclosed. The disclosed invention is a unique inline compensator in which a plurality of cylinders housed within a tubular housing and a plurality of lo... | 06/19/2007 |
| 7225749 | Turret mooring system for concrete hull vessel A turret mooring system for a vessel which includes a concrete hull and a moonpool which extends generally vertically through the hull comprises a turret which is positioned in the moonpool, an upper bearing substructure which is mounted to the hull proximate an upp... | 06/05/2007 |
| 7219739 | Heave compensation system for hydraulic workover The present invention relates generally to offshore drilling and production operations, and, more particularly, to marine drilling workover/intervention tensioning and compensating devices and methodologies. A heave compensated hydraulic workover device and/or syste... | 05/22/2007 |
| 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 |
| 7191837 | Motion compensator A motion compensator is used on a floating vessel servicing a subsea well. The motion compensator includes a first frame assembly adapted to be connected to a cable extending from a lifting structure. When connected to the cable, the first frame assembly extends lon... | 03/20/2007 |
| 7188677 | Tensioning system for production tubing in a riser at a floating installation for hydrocarbon production A device for tensioning and relieving production tubing (49) extending from a subsea hydrocarbon well (107) up through a riser (63) to a floating installation (87), a continuous production tubing extension (85) passing through a te... | 03/13/2007 |
| 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 |
| 7104330 | Marine riser tower This invention relates to a marine riser tower (112, 114) for use in the production of hydrocarbons from offshore wells. The riser tower (112, 114) includes a plurality of fluid conduits, which may comprise production flow lines (P), gas-lift lines (G)... | 09/12/2006 |
| 7104329 | Marine bottomed tensioned riser and method A new marine oil production riser system for use in deepwater applications is disclosed. An efficient means for accommodating movements of the host facility, while maintaining riser top tension within the limits for long-term riser performance. Long riser stroke len... | 09/12/2006 |
| 7090019 | Casing cutter A subsea well casing cutting tool for use as part of a well abandonment procedure, the casing cutting tool deployable from a vessel located at a water surface, where in certain embodiments the casing cutting tool comprises a casing gripper; a rotary cutter drive ass... | 08/15/2006 |
| 7086463 | Methods of downhole testing subterranean formations and associated apparatus therefor Methods and apparatus are provided which permit well testing operations to be performed downhole in a subterranean well. In various described methods, fluids flowed from a formation during a test may be disposed of downhole by injecting the fluids into the formation... | 08/08/2006 |
| 7086467 | Coiled tubing cutter A subsea production system includes a blowout preventer stack that is adapted to seal and contain pressure in a well. The blowout preventer stack has a passageway through which a tubular string may extend into the well. The subsea production system includes a subsea... | 08/08/2006 |
| 7086809 | Minimum floating offshore platform with water entrapment plate and method of installation An apparatus for use in offshore oil or gas production in which a plurality of vertical stabilizing columns are supported on a submerged horizontal water entrapment plate is provided to support minimum offshore oil and gas production facilities above a subsea wellhe... | 08/08/2006 |
| 7073592 | Jacking frame for coiled tubing operations A modular work system permits Rig Up time to be substantially reduced by reducing the number of crane lifts required to offload equipment for a transport boat or vehicle. This is achieved by developing transport skids capable of holding multiple system components. T... | 07/11/2006 |
| 7073579 | Methods of downhole testing subterranean formations and associated apparatus therefor Methods and apparatus are provided which permit well testing operations to be performed downhole in a subterranean well. In various described methods, fluids flowed from a formation during a test may be disposed of downhole by injecting the fluids into the formation... | 07/11/2006 |
| 7063158 | Bottom tensioned offshore oil well production riser An offshore oil well riser system comprises one or more tubular conduits suspended from a floating platform and having bottom ends extending downward substantially vertically toward the sea floor. A bottom end connection and tensioning assembly is disposed at the bo... | 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 |
| 7040394 | Active/passive seal rotating control head The present invention generally relates to an apparatus and method for sealing a tubular string. In one aspect, a drilling system is provided. The drilling system includes a rotating control head for sealing the tubular string while permitting axial movement of the ... | 05/09/2006 |
| 7017506 | Marginal gas transport in offshore production An offshore hydrocarbon production system in which gases are economically stored for transport. After the produced hydrocarbons are separated into liquid (crude oil) and gases, the gases are separated into heavy and light gases. The heavy gases, which consist primar... | 03/28/2006 |
| 7011152 | Integrated subsea power pack for drilling and production A power supply assembly, which is placed subsea and is connected to an umbilical from a platform, supplies electrical power to subsea equipment. The power supply assembly supplies power during drilling operations to a pump for pumping drilling fluid from the sea flo... | 03/14/2006 |
| 6976443 | Crude oil transportation system A crude oil transportation system uses a dynamically positionable floating crude oil storage and offloading vessel and a dynamically positionable shuttle tanker. The dynamically positionable floating crude oil storage and offloading vessel is a self-contained unit i... | 12/20/2005 |
| 6968901 | Oil production processing system for swaying service A method for processing oil from oil wells having water bound locations whereby it is necessary to place the process containment vessels upon host structures that are floating and subjected to a swaying motion caused by the wave action of the water in which the host... | 11/29/2005 |
| 6968899 | Drilling-workover vessel having a drill string extending through at least one swivel A vessel (1) comprises a rotatable turret (14) and a supporting structure (3) over or on the turret for supporting a swivel (5). The swivel comprising an inner and an outer ring (21, 21′; 22, 22′) which can rotate with respect ... | 11/29/2005 |
| 6966106 | Method and apparatus for transporting and running tubulars The invention is a transporting apparatus for holding lengths of tubulars and transporting tubulars to a drill floor of a drill rig, wherein the transport container for tubulars has a bottom side, a two sides connected to the bottom side, and two ends connected to t... | 11/22/2005 |
| 6966534 | Wire system for hanging picture frames A wire system for use with picture frames and other items to be hung from or mounted to a vertical support. The wire system includes a base that includes a plurality of openings and rotatable levers that include respective internal passageways. Wire is installed thr... | 11/22/2005 |
| 6955223 | Blow out preventer handling system A process to transport a blow out preventer for a drilling rig having a drawworks wherein the blow out preventer is transported between a storage area and a use position over a wellbore. The process includes the steps of connecting an upper connector end of an elong... | 10/18/2005 |
