Matches 1 - 50 out of 218 1 2 3 4 5 >
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7588393 Method for supporting top tension drilling and production risers on a floating vessel  
A method for supporting top tension drilling and production risers on a floating vessel using a tensioner assembly above the water line of the vessel. The method can include attaching at least one...
7575397 Floating platform with non-uniformly distributed load and method of construction thereof  
The floating platform of the invention is intended for supporting industrial, commercial, cultural, and dwelling structures and is suitable for deployment in shallow as well as in deep waters, The...
7553106 Method for making a floating offshore drilling/producing structure  
A method for making a deep draft semi-submersible drilling/production vessel having a center of gravity below its center of buoyancy by constructing a plurality of buoyant individual columns. The...
7540692 System, method, and apparatus for locking down tendon or riser moorings  
A tendon or riser connector has a separate lock-down device that overrides the connector's ability to unlock if the riser or tendon goes slack. The locking device has blocks that are radially...
7462000 Battered column tension leg platform  
A tension leg platform includes a deck supported on the upper ends of three or more columns interconnected at the lower ends thereof by horizontally disposed pontoons. The columns are battered...
7452162 Method of installation of a tension leg platform and tendons therefor  
A method and system for attaching a TLP to its tendons using pull-down lines to rapidly submerge the hull to installation draft while compensating for inherent hull instability during submergence...
7438504 Arrangement for anchoring a floating structure  
An arrangement for anchoring a floating structure comprising a mooring boom 120 a, b; 650 a, b pivotally arranged at either end, wherein each mooring boom at its free end has a bushing 124 a,...
7422394 Tendon for tension leg platform  
A tendon for mooring a tension leg platform having an uppermost pipe segment with a reduced diameter compared to at least one of the lower pipe segments. The tendon is watertight and sealed from...
7413384 Floating offshore drilling/producing structure  
A deep draft semi submersible structure wherein the semi-submersible has a center of gravity below its center of buoyancy and the structure is a floating vessel with at least three vertically...
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...
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...
7168889 Floating platform having a spoolable tether installed thereon and method for tethering the platform using same  
The present invention discloses a process for installing a floating platform to the ocean floor using a spoolable (preferably composite) tether, comprising installing the spooled tether onto the...
7163356 Stepped tendon with sealed bulkheads for offshore platform  
A tension leg platform is secured to the sea floor with a plurality of tendons, each of the tendons being in tension due to buoyancy of the platform. The tendons are made up of joints of pipe...
7156586 Wind turbine with floating foundation  
A floating foundation for wind turbines is disclosed, where the foundation essentially comprises at least three submerged buoyancy bodies connected to the lower end of the tower of the wind turbine...
7140807 Hybrid composite steel tendon for offshore platform  
A tendon for an offshore floating platform has a tubular section formed of joints of steel pipe secured together. The tubular section has an interior sealed from sea water to provide buoyancy. A...
7104730 Achieving hydrostatic stability of a floating structure  
A floating platform includes a hull and a deck mounted on the uppermost end of the hull. The platform is anchored to the seabed by a plurality of tendons connected to the hull at the upper ends...
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...
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...
7037044 Deck-to-column connection for extendable draft platform  
An extendable draft platform, having a deck and buoyancy columns installed in leg wells in the deck for vertical movement from a raised position to a submerged position, includes a connection...
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...
7008141 Collapsible buoyancy device for risers on offshore structures  
Expandable and contractible buoyancy modules are assembled to the risers of a deepwater exploration spar or other offshore structure to provide an upwardly directed buoyancy force to offset at...
6953308 Offshore platform stabilizing strakes  
An elongated, annular hull of a floating offshore platform includes one or more segmented, helical strakes disposed on an outer peripheral surface of the hull to reduce vortex-induced vibrations...
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...
6884003 Multi-cellular floating platform with central riser buoy  
A semi-submersible floating platform for offshore drilling and/or production of petroleum product from the seabed includes a base having a first moon pool; a plurality of vertical outer buoyancy...
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...
6851894 Deep water TLP tether system  
A tether system include tethers each having an upper section ( 1 ) attached to a tension leg platform (TLP) ( 4 ), and each upper section has a large diameter so that the upper section ( 1 ) is...
6789981 Riser tensioning construction  
A vessel includes a riser and/or tendon tensioning construction. A connector, such as an arm or deck structure, is suspended from cables movable relative to cable guides. The connector carries two...
6718899 Method for installing a number of risers or tendons and vessel for carrying out said method  
A method of connecting two or more elongate connection members ( 105 ) between the seabed and a floating vessel ( 106 ) carrying a connector ( 102 ) which is suspended from the vessel by at least...
6712560 Riser support for floating offshore structure  
A floating offshore platform configuration is provided, which decouples pitch, roll, and heave motions from acting on tensioned risers and accommodates the angular displacement induced by floating...
6712559 Seafloor-surface linking device comprising a stabilizing element  
A bottom-to-surface link with at least one underwater pipe having a portion with a substantially constant diameter and one or more floats in a string, the floats constituting cans surrounding the...
RE38458 Vertical stab tendon bottom connector and method for securing and releasing the same  
A bottom connector for the tendon of a tension leg platform uses a latch ring with an outer profile to engage a mating profile in a receptacle on the sea floor. The latch ring moves radially within...
6682266 Tension leg and method for transport, installation and removal of tension legs pipelines and slender bodies  
A tendon which is divided into compartments enclosing therein pressurized gas. A method for transporting a fluid containing tubular body or assembly of bodies above a sea/river bed floor and within...
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...
6652192 Heave suppressed offshore drilling and production platform and method of installation  
A heave suppressed, floating offshore drilling and production platform comprises vertical columns, lateral trusses connecting adjacent columns, a deep-submerged horizontal plate supported from the...
6585455 Rocker arm marine tensioning system  
A tensioning riser system for supporting marine elements such as risers which extend form a fixed lower end at a subsea base or foundation to a moving, floating superstructure. The tensioning...
6575665 Precast modular marine structure & method of construction  
A precast, modular marine structure and method of constructing the same for offshore use, including but not limited to drilling, oil and gas production, and oil storage in a variety of water...
6568880 Foundation system for tension leg platforms  
A foundation system for tension leg platforms without use of foundation templates, wherein each tendon ( 5 ) is directly connected to a socket ( 9 ) inside a pile ( 8 ), the piles ( 8 ) being...
6568875 Connector intended for use with tension leg platform  
A connector in particular intended for use with a tension leg platform is disclosed. The connector comprises a male part ( 1 ) and a female part ( 2 ), which male part ( 1 ) is designed to engage...
6558084 Device for connecting a submerged fluid-transporting line  
A connection device for connecting a submerged tubular structure to a floating support structure. The connection device includes first and second tubular connection elements that connect the...
6488447 Composite buoyancy module  
A buoyancy system for a deep water floating platform includes at least one composite buoyancy module coupled to the a riser having a length greater than 1000 feet and an associated weight. The...
6478511 Floating system with tensioned lines  
A floating system for very deep water includes a floating structure ( 1 ) subject to the external loadings ( 7, 8, 9 ) inducing stresses, the floating structure ( 1 ) being held in position on the...
6447208 Extended base tension leg substructures and method for supporting offshore platforms  
An extended-base tension leg substructure, an offshore platform supported on the substructure and a method for supporting an offshore platform on the substructure are disclosed, where the...
6435775 Buoyancy system with buoyancy module seal  
A buoyancy system for a deep water floating platform includes at least one buoyancy module coupled to the a riser. The module may be coupled to a ring structure of an end cap coupled to the riser,...
6406223 Installation for producing oil from an off-shore deposit and process for installing a riser  
An installation for producing oil from an off-shore deposit has a semi-submersible platform, at least one riser connecting the platform to the sea bed, and devices for tensioning the riser. The...
6375391 Guide device for production risers for petroleum production with a “dry tree semisubmersible” at large sea depths  
A system for use in petroleum production at sea includes a guide frame for one or more riser pipes, on a semisubmersible production vessel. One or more main buoyancy member are arranged separately...
6371697 Floating vessel for deep water drilling and production  
An exemplary floatable vessel is described having an upper tower section with a reduced diameter or width and an affixed lower base section having an enlarged diameter or width. The lower section...
6352116 Riser moving and guiding using shuttle plates  
A riser tube tower for stabilizing riser tubes extending from respective wellheads associated with a seabed frame on the seabed to a platform, preferably a tension leg platform, at the sea surface....
6318933 Foundation system for tension leg platforms  
A foundation system for tension leg platforms without use of foundation templates, wherein each tendon (5) is directly connected to a socket (9) inside the pile (8), said piles (8) being positioned...
6312195 Method of installing foundation for tension leg platform  
A method of installing a foundation for a tension leg platform is described that eliminates the foundation template as a permanent, load bearing part of the foundation. As an embodiment of the...
6244785 Precast, modular spar system  
A precast, modular spar system (10) having a cylindrical open-ended spar of relatively uniform cross section. The spar has a freeboard section (50), a buoyancy section (70), and a ballast section...
Matches 1 - 50 out of 218 1 2 3 4 5 >