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| Number | Title | Issue Date |
| 7690434 | Offshore vessel mooring and riser inboarding system There is disclosed an offshore vessel mooring and riser inboarding system (12) for a vessel (10) such as an FPSO or FSO. In one embodiment, the system comprises a first mooring element (16) adapted to be located in an offshore environment (18... | 04/06/2010 |
| 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 |
| 7150324 | Method and apparatus for riserless drilling An offshore riserless drilling system drills a subsea borehole from a platform and through a cased borehole. The system comprises a lightweight drill string suspending a bottomhole assembly and extending from the platform downwardly through a depth of water into the... | 12/19/2006 |
| 7108070 | Gas-to-liquids facility for fixed offshore hydrocarbon production platforms A GTL facility for a fixed offshore hydrocarbon production platform which comprises a deck attached to a base that is secured to the sea floor. The GTL facility comprises a syngas reactor for converting natural gas into syngas and a liquids production unit for conve... | 09/19/2006 |
| 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 |
| 7080689 | Instrumentation assembly for an offshore riser The present invention relates to an instrumentation assembly intended for an offshore riser (2) operated from a floater (1). It comprises a central processing unit (PC) connected by conducting cables (27) to: a... | 07/25/2006 |
| 7019184 | Non-oxidative conversion of gas to liquids The present invention provides a process for natural gas in the form, e.g., of stranded gas or associated gas to transportable liquids. More particularly, the present invention provides a process in which the gas is non-oxidatively converted to aromatic liquid, pref... | 03/28/2006 |
| 6973968 | Method of natural gas production A method and system for dissociating methane hydrate deposits in-situ is provided wherein an oxidizer fluid and a supply of fuel, both at a pressure higher than that of the methane hydrate deposit, are supplied and delivered to the methane hydrate deposit. The fuel ... | 12/13/2005 |
| 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 |
| 6893486 | Method and system for sea-based handling of hydrocarbons A method and system for sea-based handling/treatment of fluid hydrocarbons (oil) with associated gas include a first separation step in a high-pressure separator (18) installed on the sea bed, from which is output an oil flow containing an essentially predefi... | 05/17/2005 |
| 6893190 | Method and structure for connecting a floating structure with rope anchor lines to the seabed A method of connecting a first floating structure to the seabed, includes the steps of: providing a second floating structure, anchored to first and second anchoring points respectively on the sea bed via at least two anchor lines, attaching the second floating stru... | 05/17/2005 |
| 6782950 | Control wellhead buoy The present invention relates to a subsea system for the production of hydrocarbon reserves. More specifically, the present invention relates to a control wellhead bouy that is used in deepwater operations for offshore hydrocarbon production. In a preferred embodime... | 08/31/2004 |
| 6752214 | Extended reach tie-back system A system for producing hydrocarbons from a subsea well comprises an unmanned floating platform positioned over the well, the platform including equipment for inserting coiled tubing or wireline tools or the like into the well for servicing, controlling, or conductin... | 06/22/2004 |
| 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 |
| 6601649 | Multipurpose unit with multipurpose tower and method for tendering with a semisubmersible A semisubmersible multipurpose unit (MPU) having a deck, a multipurpose tower secured to the deck, supports, pontoons connected to the supports with each pontoon adapted for ballast transfer, at least two hawsers connected to the MPU for connecting the MP... | 08/05/2003 |
| 6457536 | Method and system for exploiting natural resources under the seabed A surface vessel is anchored almost geostationarily by a turret rotatable relative to the vessel about a vertical axis and having mooring cables extending to the seabed. A well is drilled from a drilling section in the vessel at a distance from the axis o... | 10/01/2002 |
| 6035938 | Wellhead system and method for use in drilling a subsea well There are disclosed a wellhead system and a method for use in drilling a subsea well from a jackup platform which includes a wellhead housing which is installed on a surface casing of a subsea well. A first riser having a connector on its lower end is low... | 03/14/2000 |
| 6027286 | Offshore spar production system and method for creating a controlled tilt of the caisson axis An offshore system is provided of the type that includes riser pipes (30) extending up from the seafloor (44) to a tall and narrow caisson (12) at the sea surface, with the caisson moored by mooring lines (34) extending to the seafloor and anchored therea... | 02/22/2000 |
| 5950732 | System and method for hydrate recovery A system for recovering liquid hydrocarbons from hydrates on an ocean floor includes a vessel, a positioning subsystem coupled to the vessel for holding the vessel in a desired location over a hydrate formation, a hydrate recovery subsystem coupled to the... | 09/14/1999 |
| 5697446 | Method and system for producing hydrocarbons from a tension-leg platform The present invention relates to a method and to a system for producing hydrocarbons from marginal offshore fields. The invention includes a baseplate (2) fastened to the bottom and a small-size floating support (9) anchored to the baseplate by tendons (1... | 12/16/1997 |
| 5549164 | Method and apparatus for production of subsea hydrocarbon formations A well tender system for controlling, separating, storing and offloading well fluids produced from subsea hydrocarbon formations. The system comprises a vertically aligned series of tethered cylindrical tanks which are torsionally stabilized by flexible c... | 08/27/1996 |
| 5474601 | Integrated floating platform vertical annular separation and pumping system for production of hydrocarbons A VASPS (vertical annular separation and pumping system) is integral with a floating production vessel such as a TLP. The head section of the VASPS is located at the deck level of the vessel. The tail section is located at or near the bottom of the body o... | 12/12/1995 |
| 5433273 | Method and apparatus for production of subsea hydrocarbon formations A well tender system for controlling, separating, storing and offloading well fluids produced from subsea hydrocarbon formations. The system comprises a vertically aligned series of tethered cylindrical tanks which are torsionally stabilized by flexible c... | 07/18/1995 |
| 5381865 | Method and apparatus for production of subsea hydrocarbon formations A system for controlling, separating, processing and exporting well fluids produced from subsea hydrocarbon formations is disclosed. The subsea well tender system includes a surface buoy supporting one or more decks above the water surface for accommodati... | 01/17/1995 |
| 5297632 | Method and apparatus for production of subsea hydrocarbon formations A well tender system for controlling, separating, storing and offloading well fluids produced from subsea hydrocarbon formations. The system comprises a vertically aligned series of tethered cylindrical tanks which are torsionally stabilized by flexible c... | 03/29/1994 |
| 5295546 | Installation and method for the offshore exploitation of small fields A method of extending the working range of a main platform installation for oil deposits at sea involves: (1) positioning a temporary floating station at a location distance from the main platform installation and near to an oil deposit having small indiv... | 03/22/1994 |
| 5226482 | Installation and method for the offshore exploitation of small fields A method of extending the working range of a main platform installation for oil deposits at sea involves: (1) positioning a temporary floating station at a location distance from the main platform installation and near to an oil deposit having small indiv... | 07/13/1993 |
| 5117914 | Method and apparatus for production of subsea hydrocarbon formations A well tender system for controlling, separating, storing and offloading well fluids produced from subsea hydrocarbon formations. The system comprises a vertically aligned series of tethered cylindrical tanks which are torsionally stabilized by flexible c... | 06/02/1992 |
| 4983073 | Column stabilized platform with improved heave motion The semi-submersible platform comprises a submersible lower hull including a plurality of spaced-apart hull segments. A wave-transparent stabilizing superstructure extends from the lower hull. An upper hull is supported by the superstructure. A wellhead s... | 01/08/1991 |
| 4972907 | Method of conducting well operations from a moveable floating platform A method is described for conducting well operations from a floating platform that may be moved to various locations above subterranean formations. Marine risers that have been previously connected to the platform flex sufficiently to allow this movement.... | 11/27/1990 |
| 4727819 | Single line mooring system A mooring system is provided, which can be rapidly installed and which is of relatively low cost. The system includes a transfer structure attached to a vessel, an anchor line extending from the transfer structure to a chain table near the sea floor, and ... | 03/01/1988 |
| 4702321 | Drilling, production and oil storage caisson for deep water A drilling, production and oil storage caisson for use in deep water offshore well operations in which the caisson has such a deep draft that its bottom end is subject only to minimal excitation forces caused by wave, wind and current acting on the caisso... | 10/27/1987 |
| 4375835 | Oil production system An oil production system for producing oil at an offshore location comprises a floating storage vessel to receive the produced oil, the vessel having means for dynamic positioning and being connectable to a subsea well head by a riser and having means for... | 03/08/1983 |
| 4336843 | Emergency well-control vessel The emergency well-control vessel is capable of being moved above an offshore live oil or gas well, over which all normal controls have been lost. The vessel carries special purpose equipments and specially trained personnel for the purpose of bringing th... | 06/29/1982 |
| 4305468 | Method for drilling wellbores from an offshore platform A method for drilling wellbores from an offshore platform to penetrate a subterranean formation using a combination of surface drilling techniques and subsea drilling techniques to achieve an improved effectiveness by avoiding the necessity for large cond... | 12/15/1981 |
| 4301760 | Method for positioning a watercraft, in particular a drilling ship as well as relevant devices A drilling ship is maintained over a deep sea well in a drilling position defined by an inner circle and an outer circle having the well as their center. The ship is connected to a set of anchors fastened to the sea bed and adapted, when the ship is subje... | 11/24/1981 |
