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7308863 Offshore LNG regasification system and method  
A system and method for the offshore transfer of liquefied natural gas from an LNG tanker vessel to a moored or dynamically positioned regasification plant is disclosed. Once the state of the...
7293940 Guide tube for a flexible pipe for transporting hydrocarbons  
A guide tube for a flexible pipe for transporting hydrocarbons comprising an internal tubular element of a substantially rectilinear section extending along an axis (A) and extended by a free...
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...
7264420 Floating overturn prevention device  
A floating overturn prevention device includes a flat-top base and a pillar coupled to a bottom surface of the flat-top base and extending therefrom. The flat-top base is a floating body for...
7241077 Underwater installation apparatus  
A running tool for deployment from a base such as a vessel for installing a component at an underwater facility such as a hydrocarbon extraction well includes a carriage which is lowered from the...
7234896 Vertically folding service arm for a movable platform offshore drilling or servicing rig  
An apparatus and method for maintaining electrical and hydraulic connections between a junction box (or junction boxes) located on or near an offshore platform's floor and a movable drilling rig...
7234409 Vessel for transporting wind turbines, methods of moving a wind turbine, and a wind turbine for an off-shore wind farm  
A wind turbine ( 1 ) has a base ( 5 ) divided into at least three ballast tanks ( 12 ). A vessel ( 7 ) has means for displacing the wind turbine between a loading space ( 25 ) and an unloading...
7226245 Modular marine structures  
A load-carrying modular structure assembled from 3-D structural modules constituting parallelepipeds with rectangular faces, the 3-D modules adjoining each other along said faces. The modules...
7188574 Cylindrical hull structural arrangement  
An improved floating circular hull construction arrangement. The hull is divided into sections by watertight flats. The flats are stiffened with angles or bulb tees curved to form concentric...
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...
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...
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...
7114883 Offshore fluid transfer system and method  
Apparatus ( 12 ) for transferring fluid between floating vessels ( 10, 11 ) is described, comprising a submerged rigid transfer arm ( 13 ) carrying a fluid pipeline ( 16 ). The apparatus ( 12 ) is...
7112011 Hydro-pneumatic tensioner with stiffness altering secondary accumulator  
A hydro-pneumatic tensioner includes a barrel having an inner bore and a pressurized fluid contained within to form at least part of a primary accumulator having a preset volume of gas at a nominal...
7112010 Apparatus, systems and methods for erecting an offshore wind turbine assembly  
An embodiment of an apparatus useful for up-righting a wind turbine pillar at an offshore installation location includes a barge having first and second towers and an open area therebetween and...
7111575 Synthetic fuel plant  
A self-contained, floating, waterway supplied and moveable synthetic fuel plant includes apparatus for receiving components of and for making synthetic fuel of coal and binder for energy consumers....
7101118 Multi hull barge  
Disclosed is a vessel comprising at least two parallel hulls at a predetermined mutual distance. A deck structure is supported on the hulls. Fluid storage tanks are placed in the at least two...
7097387 Engineered material buoyancy system and device  
There is provided a buoyancy system for a structure having at least one component being substantially stationary with respect to the bottom of a water covered area. The system comprises a set of...
7044072 Cylindrical hull structure  
An improved floating circular hull construction arrangement. The hull is divided into sections by watertight flats. In each section, longitudinal stiffeners spaced around the inside of the outer...
7011471 Jacking method and apparatus  
A jacking method and apparatus for a heavily loaded platform includes hydraulic continuous linear motion motors, preferably comprising a plurality of phased hydraulic piston/cylinder units, that...
7008140 Buoyant leg structure with added tubular members for supporting a deep water platform  
A deep water support platform, suitable for use as a hydrocarbon exploration or production facility in very deep waters of 10,000 ft or more is presented. The platform is attached to the floor of...
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...
6981822 Jack-up apparatus for marine-based platforms  
In a jacking system for a marine platform, a plurality of hydraulic continuous linear motion motors are engageable with a plurality of marine platform supporting logs to provide relative motion...
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...
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...
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...
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...
6913418 Underwater building unit and methods of installation and application thereof  
The present invention discloses an underwater building unit and its installation and application methods. It includes a caisson with both ends open and is composed of two rows of box boards being...
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...
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...
6869254 Riser tensioner sensor assembly  
An apparatus for providing an indication of relative movement between sheave assemblies of a riser tensioner that has a sensor target connectable to one of the sheave assemblies, a senor tube...
6863474 Compressed gas utilization system and method with sub-sea gas storage  
A system and method utilizing compressed gas according to which the gas is compressed at a location above ground and transported to an underwater location. The gas is stored at the underwater...
6851892 Marine impact-absorbing structure  
A sacrificial impact-absorbing and energy-dissipating structure for protecting marine facilities from the destructive force of an accidental impact by a marine vessel is constructed from a...
6848863 Engineered material buoyancy system and device  
There is provided a buoyancy system for a structure having at least one component being substantially stationary with respect to the bottom of a water covered area. The system comprises a set of...
6832875 Floating plant for liquefying natural gas  
A floating plant for liquefying natural gas having a barge provided with a liquefaction plant, member for receiving natural gas and with member for storing and discharging liquefied natural gas....
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...
6827032 Landing stage  
Offshore wind power installations usually require a landing stage or landing pier so that craft, in particular ships, can guarantee supply and transportation services. In the case of small offshore...
6821055 Marine buoyancy modules and units  
A cylindrical buoyancy unit is composed of separate sections which are held together to surround a marine object such as a riser or pipe with additional conduits. The sections combine to define an...
6817809 Seabed oil storage and tanker offtake system  
An offshore oil storage and offtake system is disclosed. The system includes a storage tank attachable to the seabed and adapted to store hydrocarbons. At least one fluid channel is included which...
6808337 Vessel with vertically elevational support legs  
A vessel, preferably a chip, for transport and mounting of structures has a hull and at least four vertically elevated support legs and displacement apparatus for elevating the support legs so as...
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...
6779949 Device for transferring a fluid between at least two floating supports  
For transferring a fluid between at least two floating supports or one floating and one fixed support, a rigid hollow transport line is immersed with a cable suspension system in the sea. A...
6761124 Column-stabilized floating structures with truss pontoons  
Column-stabilized floating structures having a deck and a plurality of vertical buoyant caissons bridged together in distantly spaced relation by a plurality of open frame horizontal truss pontoon...
6739804 SCR top connector  
A mechanical joint assembly for a steel catenary riser (SCR) is disclosed. The lower section of the mechanical joint assembly is comprised of steel or alternate high strength components, rather...
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...
6712558 Ice composite body and process for the construction thereof  
An ice composite body ( 10 ) has an inner ice core ( 11 ) and a protective outer armour shell ( 12 ). The outer armour shell ( 12 ) consists of a base section ( 13 ), side sections ( 14 ) and a...
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...
6688814 Adjustable rigid riser connector  
A substantially rigid riser to offshore platform connector and a process of using the connector allows a riser to be preloaded and adjustably positioned relative to the offshore platform. The...
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...
6672803 Method of constructing precast modular marine structures  
A method of constrcuting a precast, modular marine structure for offshore use, including but not limited to drilling, oil and gas production, and oil storage in a variety of water depths. The...