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Class 405/226 - Including floor modifying means


Subclass of Class 405 - Hydraulic and earth engineering
Definition: Method or apparatus wherein the configuration or character
No. of patents: 58
Last issue date: 10/30/2007


1    
NumberTitleIssue Date
7287935Tendon 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 the sea floor. A socket at the counterweight telescopingly slides ov...
10/30/2007
7168889Floating 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 floating platform; towing the floating platform to a site for installat...
01/30/2007
7140319Pile anchor with external vanes
An elongated hollow member (160), as shown in FIG. 1, with longitudinally disposed external vane(s) (275A–B) for securing an offshore structure to the seafloor. The external vanes help maintain the heading and bearing of the anchor during the ...
11/28/2006
7096955Long duration fuel cell system
A subsea fuel cell and system adapted for long duration use. The subsea fuel cell comprises a fuel cell stack and a water discharge system. In alternate embodiments, the subsea fuel cell can further comprise an impurity discharge system. ...
08/29/2006
7090434Caisson removal process
A method of removing a pipe, such as a caisson, from a body of water, after the platform has been removed which includes the steps of a high pressure head having a lifting padeye is secured to the upper end of the caisson; the caisson is then flooded with water; pre...
08/15/2006
7069998Fuel cell for downhole and subsea power systems
This invention relates to fuel cells, and in one embodiment, to fuel cells that are especially well suited for downhole use in oil and gas wells, and for subsea use in connection with offshore wells. ...
07/04/2006
7033114Method for installing reinforcements around a cylindrical underground pipeline
In order to install a reinforcement around a cylindrical underground pipeline, an excavation coffer is laid on the ground above the pipeline, at the same time placing transversely to the pipeline front and rear faces of the coffer, each having along its lower edge a...
04/25/2006
6935810Semi-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
6887016Mudmat foundation for subsea equipment
A mudmat foundation for supporting an item of subsea equipment on the sea floor comprises a mudmat on which the item of subsea equipment may be supported and a plurality of legs which are pivotably connected to and depend downwardly from the mudmat. The legs are fre...
05/03/2005
6745852Platform for drilling oil and gas wells in arctic, inaccessible, or environmentally sensitive locations
A system for drilling wells includes a plurality of platform modules, which are interconnected to one another on site to form a unitary platform structure. The interconnected platform modules are elevated above a surface on plurality of legs coupled to at least some...
06/08/2004
6692194Method for installing a conductor casing through a suction substructure
A suction substructure (2) is for the setting of one or more conductor casing strings (14) in connection with drilling of at least one underwater well, preferably a petroleum well. Use of the suction substructure (2) renders possible the installation of c...
02/17/2004
6685396Method and apparatus for suction anchor and mooring deployment and connection
A method and apparatus for deployment of mooring systems for buoyant marine structures such as mobile offshore drilling units (MODU's) and for connecting the same to the mooring lines thereof. An anchor handling vessel carries one or more anchors each hav...
02/03/2004
6457908Method and apparatus for suction anchor and mooring deployment and connection
A method and apparatus for deployment of mooring systems for buoyant marine structure such as mobile offshore drilling units (MODU's) and for connecting the same to the mooring lines thereof. An anchor handling vessel carries one or more anchors each havi...
10/01/2002
6273645Position penetrated anchor system
The invention relates to a method for installing anchors on the bottom of the sea. Wires (4) and a suction anchor (2) are attached to a frame (1). Through the centre of the frame's vertical axle a mounting device (6) for an anchor holder (7) is placed. Th...
08/14/2001
6257800Fiberglass mudmat assembly
A mudmat assembly for supporting a portion of a subsea offshore platform on a soft, unconsolidated underwater surface is described. The mudmat assembly includes at least one fiberglass plank, a mudline framing plane that is attached to and provides suppor...
07/10/2001
6053663Device for creating a local water flow
A device for creating a localized water jet within a body of water allows for the displacement of material from the floor of the body of water. The device includes two powered screws within a jet pipe. The screws are arranged coaxially and their direction...
04/25/2000
6004075Mudmats for offshore platform support
A mudmat in which the bearing plates of the mudmat are fabricated of a non-corrosive, man-made structural material such as plastic. The plates, formed of such a material, are lightweight, easily fabricated and generally less expensive than the prior art p...
12/21/1999
5967700Lime/cement columnar stabilization of soils
A method to provide a stoichiometric mixture of water, lime and cement for making an in-site piling. Water to supplement existing ground water is supplied by an augur as it drills into the ground so that a substantially uniform concentration of water exis...
10/19/1999
5382115Apparatus intended to be buried in ground beneath water
Apparatus such as a cofferdam 1, intended to be partially buried in ground beneath water comprises a hollow structural framework. The framework includes chambers 12 which have inlets 29 via which pressurized water can be supplied to the chambers. Each cha...
01/17/1995
5259458Subsea shelter and system for installation
A subsea abandoned wellhead protection system which may be installed underwater without the need for underwater assistance from divers or the like, the system allowing full site preparation and installation from the surface. The present invention teaches ...
11/09/1993
5248003Apparatus and method for supporting the free end of a cantilever beam of a cantilevered jack-up rig
A cantilevered jack-up rig having a support for supporting the free ends of the rig's cantilever beams when said beams are extended over a platform to be serviced by the rig, thereby maximizing the lateral reach of the rig and increasing the load capacity...
09/28/1993
5125769Floatable structure
A structure that is floatable on a ocean surface and that is fixable relative to an ocean bottom. The structure includes an array of floatable, submersible caissons and a floatable box girder capable of supporting a modular superstructure. The box girder ...
06/30/1992
5018904Sea-bed support device for the legs of a self-elevating oil-rig platform
A support device on the sea-bed for legs of a self-elevating oil-rig platform are characterized in that it comprises an individual and independent shoe (3) intended to be fixed on the lower end of the leg (2) and fitted with a detachable and adjustable lo...
05/28/1991
5002434Method and apparatus for placing a hollow column in the hard bottom of a body of water in particular in a rock bottom
Method and apparatus for lowering a heavy hollow column into hard soil and rock at the bottom of a body of water which column has a downwardly widening outer surface and a sharp lower edge. By means of plurality of suction nozzles erosive water flows are ...
03/26/1991
4919210Subsea wellhead protection system
An artificial submerged structure and underwater wellhead protection system for sheltering a submerged, permanently or temporarily abandoned wellhead utilizing a sloped structure configured to prevent nets, anchors, and the like from entangling or otherwi...
04/24/1990
4919065Submarine vehicle intended to measure data at the deep ocean sea-bottom
The invention is related to a submarine vehicle for the deep ocean research. This vehicle is composed of a penetrator (1) and of a support structure (2 to 7). The vehicle descends by gravity due to a ballast disposed in the lower part (11) of the penetrat...
04/24/1990
4830541Suction-type ocean-floor wellhead
A wellhead apparatus and a method for positioning the apparatus on the ocean floor in combination with means for sinking it into the ocean floor. The wellhead apparatus is equipped with a venturi suction device and a central opening for receiving a well c...
05/16/1989
4808037Method and apparatus for removal of submerged offshore objects
A method for removal of large metal objects such as offshore platforms that may be embedded in or substantially immobile and lying on the seabed. The environment should be dislodged from at least a portion of the supporting pile embedded below the mud lin...
02/28/1989
4784528Method and apparatus for piled foundation improvement with freezing using down-hole refrigeration units
The invention relates to a method and apparatus for increasing the capacity of a tubular driven pile. A refrigeration unit is lowered into the pile and grouted in place above a cement plug. The area between the refrigeration unit and the plug is filled wi...
11/15/1988
4773793Pile having double cone anchor
A light weight pile having increased load bearing capacity for being embed in the ocean floor. Two cones are welded together at their base. An opening of about one third the diameter of the base is made in the apex of each of the cones to provide an open...
09/27/1988
4768899Device and method to cut piles
A device and method for severing the piles, grout and structural sleeves of vertical marine structures, from the inside of the structural member or the outside of the structural member. The device will sever the pile, grout or sleeve without jamming even ...
09/06/1988
4761096Universal footing with jetting system
A universal footing and jetting system for marine platforms and structures comprises a spud-can forming an enlarged footing base to distribute loadings over a large soil area and thus increase bearing load capacity while reducing required pile penetration...
08/02/1988
4744698Method and apparatus for installing marine silos
A method and apparatus for installing marine silos to a desired depth into the seabed such that the interior of the silos is void of seabed material to a desired depth. A submergable silo positioning template operatively supports a silo and excavation mod...
05/17/1988
4735526Method for installing offshore jack-up structures
A method for installing an offshore jack-up structure having a buoyant platform to be towed and a plurality of legs, the method comprising the steps of: (a) providing a pair of ultrasonic transmitter-receivers on a longitudinal and horizontal center line ...
04/05/1988
4721415Well base in ocean floor
A wellhead apparatus and a method for positioning the apparatus on the ocean floor. The wellhead apparatus is equipped with a removable pump and a central opening for receiving a well conductor pipe. The apparatus provides a well base structure that is hi...
01/26/1988
4695194Mobile marine operations structure
A marine operations structure for use in arctic seas having steel/concrete composite ice walls positioned to permit multi-year ice ridges to be broken up with lower vertical forces imposed on the structure than heretofore possible. The structure provides ...
09/22/1987
4674919Off-shore platform structure
Method for founding and stabilizing an off-shore platform which at its lower end is provided with skirts. The skirt or skirts are forced so deep down in the ground that a significant portion of the foundation area is transferred down to a depth where the ...
06/23/1987
4619556Method and apparatus for severing a tubular member
There are disclosed a method and apparatus for severing a tubular member at a desired level beneath the ocean floor or other underwater surface from which the tubular member extends. The apparatus includes an assembly which is disposable about the tubular...
10/28/1986
4601612Sandjet rotating nozzle
A method of filling voids underneath the lower surface of a structure placed upon the ocean floor, using a sandjet stinger conduit inserted through the structure to carry a water and sand suspension to the base of the structure....
07/22/1986
4576521Permanent mooring method and arrangement
A permanent mooring method and arrangement for embedding a permanent mooring device in the sea bottom calls for the lowering of the permanent mooring device into the sea until the bottom end contacts the sea bottom, the transmission of fluid under high pr...
03/18/1986
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