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| Number | Title | Issue Date |
| 8007204 | Floating structure for support of mixed use facilities A method for providing a sustainable offshore community that includes a floatable, low cost platform structure which covers a large amount of real estate and is supported above the surface of the ocean from columns which pass through the structure such that the extr... | 08/30/2011 |
| 7311469 | Floating lowering and lifting device A floating lowering and lifting device (1) includes a floating structure (2) and a lifting unit (3) lowerable from the floating structure (2) towards the sea bed, the lifting unit (3) having a chamber (5) with at least one g... | 12/25/2007 |
| 7293939 | Inclined leg floating production platform with a damper plate A floating moored oilfield production structure for deepwater application. An apparatus and a method for the construction and installation of floating oilfield production structures, wherein the deck structure is supported by multiple pairs of inclined buoyant legs ... | 11/13/2007 |
| 7278801 | Method for deploying floating platform A method for deploying a floating platform at an offshore wellsite uses pull-down lines to provide stability to the platform while ballasting. The platform is equipped with a number of tension devices and towed to a staging site while at a first draft, At the stagin... | 10/09/2007 |
| 7270071 | Deep draft semisubmersible movable offshore structure The present invention is a deep draft partially submersible and buoyant floating vessel comprised of at least three independent vertical columns. The columns have an upper column with an upper column diameter and a lower column integrally connected to the upper colu... | 09/18/2007 |
| 7258510 | Systems and methods useful in stabilizing platforms and vessels having platforms and legs Disclosed is a system useful in stabilizing a vessel. The vessel includes, but is not limited to, a first leg, a second leg, a third leg, and a platform coupled to the first, second, and third legs. The system can include a first brace coupled to the first leg at a ... | 08/21/2007 |
| 7255517 | Ballasting offshore platform with buoy assistance A method for deploying a floating platform includes storing buoys on a hull of the platform. Tension devices are mounted to the hull, each being connected by a line to one of the buoys. The operator tows the hull to a ballast down site while the buoys are stored on ... | 08/14/2007 |
| 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 |
| 7197999 | Spar disconnect system A spar-type offshore platform includes a buoyant upper hull structure supporting a deck and having lower end in which is received a buoyant lower mooring module. The upper hull structure is connected to the mooring module by connection lines. The upper hull structur... | 04/03/2007 |
| 7117810 | Platform structure The invention relates to a floating platform (1) for offshore drilling or production of hydrocarbons, comprising a topsides (2) and a substructure (3) having a lower pontoon (4) and columns (5) connecting the pontoon (4) to ... | 10/10/2006 |
| 7114884 | Method and apparatus for increasing floating platform buoyancy A floating platform for recovery of oil and gas from offshore oil and gas fields includes a hull having a portion located substantially below the water surface, and including a portion thereof which extends above the water surface. The platform is anchored to the se... | 10/03/2006 |
| 7101117 | Minimized wave-zone buoyancy platform Minimized Wave-zone Buoyancy is a new approach to oil and gas platform design with superior construction and performance characteristics compared to state-of-art off-shore drilling and production platforms. Minimized Wave-zone Buoyancy platforms capitalize on low cr... | 09/05/2006 |
| 7094140 | Abrasive sanding surface An abrasive sandpaper system having a backing plate (16) with a canted outer periphery (28) and an off-centered aperture (26) for interlocking with lugs (18) of a power driver (12). The sandpaper (30) has a canted outer peri... | 08/22/2006 |
| 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 |
| 7086810 | Floating structure The present invention relates to a floating structure to receive maritime production or drilling installations that is provided with means to reduce movement caused by the action of environmental forces on it. These means confer a more stable behavior on the structu... | 08/08/2006 |
| 7033115 | Temporary floatation stabilization device and method A temporary stability module and method for marine structures during construction, transportation and installation is taught. The device and method permit the structure, including platforms, deck and equipment to be constructed in an upright position, towed to an oc... | 04/25/2006 |
| 7011472 | Semi-submersible offshore vessel A semi-submersible offshore vessel including a rectangular ring-pontoon having a first transverse pontoon section at a first end of the vessel and a parallel second transverse pontoon section at a second end of the vessel, and two parallel pontoon sections extending... | 03/14/2006 |
| 7001108 | Mat supported offshore structure A bottom-supported jack-up rig has a hollow ring mat with a central opening for accommodating a lower portion of a hull nested therein when the rig is in transit. The ring mat has a predetermined surface footprint sufficient to provide stability to the rig when embe... | 02/21/2006 |
| 6997649 | Underwater riprap foundation and consolidation smoothing method therefor An underwater riprap foundation which can be constructed efficiently using a reduced amount of ripraps and a consolidation smoothing method for efficient construction of the same are disclosed. The underwater riprap foundation includes a first region for supporting ... | 02/14/2006 |
| 6981823 | Method and arrangement for installation and removal of objects at sea A method and a suitable arrangement for installation of a deck structure at an offshore location, where the deck structure is put on a vessel at a location inshore, then transported on the vessel to the offshore location and positioned relative to legs (13) o... | 01/03/2006 |
| 6968797 | Method for installing a self-floating deck structure onto a buoyant substructure This invention provides a method for installing a self-floating deck structure with at least one recessed cavity on the bottom of the self-floating deck structure onto a buoyant substructure. The self-floating deck structure is aligned over a submerged buoyant subst... | 11/29/2005 |
| 6945736 | Offshore platform for drilling after or production of hydrocarbons Platform for drilling after or production of hydrocarbons at sea, consisting of a semi-submersible platform body which supports drilling and/or production equipment on its upper surface. The platform body is designed as a vertical mainly flat bottomed cylinder which... | 09/20/2005 |
| 6945737 | Single column extendable draft offshore platform An extendable draft offshore oil and gas drilling and production platform (“EDP”) includes a buoyant deck having a central opening, an adjustably buoyant pontoon, and a single, adjustably buoyant column. The column is mounted upright on the pontoon, and is verti... | 09/20/2005 |
| 6942427 | Column-stabilized floating structure with telescopic keel tank for offshore applications and method of installation A floating offshore fluid storage caisson platform has a large diameter vertically oriented buoyant column or caisson, or multiple caissons, defining a storage chamber, and a telescopic keel tank disposed at the bottom end thereof, and may have deck on top of the ca... | 09/13/2005 |
| 6935810 | Semi-submersible multicolumn floating offshore platform A semi-submersible, multicolumn, deep draft, floating offshore oil and gas drilling and production platform comprises a floating hull having an adjustably buoyant base, a plurality of columns vertically upstanding from the base, and an equipment deck that is support... | 08/30/2005 |
| 6932542 | Tension leg platform having a lateral mooring system and methods for using and installing same A lateral mooring system for tendon-based platforms is disclosed, which provides reduced installation and/or operational cost associated with the installation and operation of an extended-base tension leg platform. The lateral mooring system includes a plurality of ... | 08/23/2005 |
| 6899492 | Jacket frame floating structures with buoyancy capsules Jacket frame floating structures comprise one or more elongate vertical support columns formed of an open cross-braced jacket formwork of tubular members interconnected together and at least one cylindrical buoyancy capsule disposed in the open framework near an upp... | 05/31/2005 |
| 6869251 | Marine buoy for offshore support A marine buoy for the offshore support of subsea production and drilling activities that has a closed-bottomed base section with a solid ballast and variable ballast chambers, a chamber in the base section for storing equipment and supplies, and an upper section wit... | 03/22/2005 |
| 6854933 | Vertically restrained centerwell SPAR In one example embodiment, a floating deep draft caisson vessel for drilling and production is provided. The vessel comprises an outer hull, wherein the outer hull has a hollow centerwell. The vessel further comprises a centerwell buoy guided within the centerwell. ... | 02/15/2005 |
| 6840713 | Device for positioning and lifting a marine structure, particularly a platform deck A device for positioning and lifting a marine structure, particularly a platform deck, with the use of a U-shaped lifting vessel (1). The device has at least two adjustable lifting frames (12,12), each able to incline towards the middle of the docking ... | 01/11/2005 |
| 6830413 | Ballast system for tension leg platform An apparatus and method for ballasting and de-ballasting a vessel having a hull with a plurality of watertight ballast compartments wherein each ballast compartment has an individual pump caisson extending vertically to the top of the hull, but the ballast/de-ballas... | 12/14/2004 |
| 6786679 | Floating stability device for offshore platform An offshore well platform is towed in an upright condition to a well site by the use of a temporary flotation device. The flotation device mounts to a portion of the platform and is partially submerged, increasing the ability and buoyancy of the platform. At the sit... | 09/07/2004 |
| 6761508 | Satellite separator platform(SSP) A floating platform with motion characteristics for offshore deepwater developments with vertical axial symmetry and decoupling of hydrodynamic design features. A motion-damping skirt (120) is provided around the base of the hull (1), which is configur... | 07/13/2004 |
| 6719495 | Articulated multiple buoy marine platform apparatus and method of installation A marine platform (and method of installation) provides a plurality of buoys, a platform having a peripheral portion that includes a plurality of attachment positions, one attachment position for each buoy, and an articulating connection that connects each buoy to t... | 04/13/2004 |
| 6676334 | Work module support vessel An offshore construction system comprises a work module support vessel having a ballast-down mode, in which a deck of the vessel is submerged below the water surface, and a ballast-up mode, in which the deck is disposed above the water surface. The system... | 01/13/2004 |
| 6666624 | Floating, modular deepwater platform and method of deployment A floating platform for use in a body of water comprises an uppermost buoyant and ballastable hull partially submerged in the water without contacting the floor of the body of water and usually without being moored to the floor of the body of water. The b... | 12/23/2003 |
| 6612781 | Method of transporting and installing an offshore structure A method of transporting and installing an offshore structure including transporting the offshore structure to the installation site by barge with at least a portion of the structure being supported under the barge, and lowering the offshore structure to ... | 09/02/2003 |
| 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 |
| 6565286 | Method for fabricating and assembling a floating offshore structure A method for fabricating sections of a floating offshore spar type structure and mating the sections offshore. A buoyant hard tank is fabricated vertically. The hard tank is then transported in a vertical orientation to a site where it is mated to a truss... | 05/20/2003 |
| 6564741 | Telescoping spar platform and method of using same A telescoping spar structure designed to be scalable for use with very large floating platforms to relatively small floating platforms includes a platform/hull for supporting a payload; a telescoping spar attached to the platform/hull that includes severa... | 05/20/2003 |
