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WO/2000/027693A1 |
An apparatus and method for installing a deck (3) on an offshore substructure (15) is provided. The apparatus comprises a deck supported by lifting mechanisms (6) compressed until transported to an offshore substructure having an upper e...
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WO/2000/028111A1 |
The invention relates to: A method for the hindrance of adherence and growth of living marine organic items (1) on a surface (5) of an object (2) by means of a magnetic flux (3), said surface (5) being exposed to a marine environment (7)...
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WO/2000/024972A1 |
The present invention provides an offshore structure (2) comprising a base (4), a deck (8), and a plurality of lattice legs (6) extending between the base and the deck, wherein the legs are arranged outboard of the deck and a connection ...
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WO/2000/022240A1 |
A soil resisting device (20) for a structure contacting seawater which is provided with an anode forming member (4) installed via an insulating adhesive (6) on the surface, on the seawater side, of a structure contacting seawater (15), t...
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WO/2000/019059A1 |
Equipment and procedures for recovering submerged structures (114), comprising a frame (100) having controllable buoyancy and which is first submerged to hang beside the submerged structure. The frame is attached to the submerged structu...
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WO/2000/011270A1 |
An elevating unit (10) for a jack-up rig (11) provides a pinion gear (23) that rotates upon a support frame for engaging a toothed rack of each leg (14) of the jack-up rig. Each pinion gear (23) is mounted on a gear shaft (28) that exten...
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WO/1999/058769A1 |
The invention relates to a tilting jack offshore platform (1) comprising a work deck (2) and legs (3) supporting the work deck (2) , wherein each of the legs (3), at one of their respective ends is attached to the work deck (2) by a, in ...
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WO/1999/057379A1 |
The invention relates to a leg assembly for an offshore structure, such as a self-elevating jack-up rig. The leg assembly has a pair of parallel leg chords (40, 42) divided into a plurality of sections by transverse bracing members (46)....
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WO1999013164A9 |
A method and apparatus for the installation or removal of large multi-ton prefabricated deck packages (16) includes the use of usually two barges (11, 12) defining a base (13, 14) that can support a large multi-ton load. A variable dimen...
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WO/1999/043542A1 |
In a method for the transfer of an offshore platform topsides (3) from a substructure (2) fixed to the seabed to a floating transporter (1), where the transporter (1) is lowered by means of ballasting and introduced under the platform to...
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WO/1999/043956A1 |
The invention relates to a method for installation of windmills at sea. The windmills are placed upon beds on the sea bottom, with bed and windmill comprising tower, mill top and rotor assembled in mainly one piece in another location th...
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WO/1999/043921A1 |
In a method for transfer of an offshore platform topsides (3) from a substructure (2) fixed to the seabed to a floating transporter (1), where the transporter is lowered by means of ballasting and moved in under the platform topsides (3)...
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WO/1999/043543A1 |
In a method for the transfer of an offshore platform tospides (3) from a substructure (2) fixed to the seabed to a floating transporter (1), where the tansporter (1) is lowered by means of ballasting and moved in under the platform topsi...
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WO/1999/042666A2 |
A mudmat (24) in which the bearing plates (28) 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 ex...
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WO/1999/040260A1 |
A jack-up, movable drilling platform comprises a telescopic outrigger structure (4) which is movable between a retracted position where it is located above the drilling platform's deck (1) and an extended position where it projects outwa...
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WO1999009259A9 |
A method and apparatus for the installation or removal of large multi-ton prefabricated deck packages (17) includes the use of usually two barges (11, 12) defining a base (13, 14) that can support a large multi-ton load. A variable dimen...
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WO1999010605A9 |
An arrangement of a jackup platform's elevating system, leg guides, hull-to-legs load transfer device, and method of operation of the load transfer device for an offshore jackup platform's hull to be supported by legs which have one or m...
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WO/1999/029967A1 |
An arrangement for connecting tubular articles, particularly piles and pile sleeves, in which a first tube (4) fits into a second tube (2), the first tube having a first circumferential recess (10) and a second circumferential recess (12...
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WO/1999/025929A1 |
Deterioration of a submarine structure is prevented by applying ultrasonic vibrations and electric fields, i.e., vibration energy and electric energy, to the submarine structure. The ultrasonic vibration unit comprising an ultrasonic vib...
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WO/1999/022985A1 |
A method of transporting and installing an offshore sturcture (2) comprising transporting the offshore structure (2) to the installation site by barge (24) with at least a portion of the structure (2) being supported under the barge (24)...
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WO/1999/009260A1 |
A method and apparatus for the installation or removal of large multi-ton prefabricated deck packages (17) includes the use of usually two barges (11, 12) defining a base (13, 14) that can support a large multi-ton load. A variable dimen...
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WO/1999/006271A1 |
A transporter for removing an offshore platform consists of an oblong structure (1) with a U-shaped cross section, rotatable by means of ballasting. The transporter is adapted to remove and carry both a jacket (17) and a topsides (16) si...
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WO/1999/002786A1 |
Unmanned platform for the recovery of minerals especially crude oil and natural gas from sea bed and the way of its foundation, consists of a bottom plate (8), in which are introduced main support pillars (15) and joined by clippers (6) ...
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WO/1999/002785A1 |
A submersible/semi-submersible dry lift carrier (200) for transporting a jack-up drilling rig (10) in water includes a hull (206), a deck (210), at lest one stability column (222), and a plurality of ballast compartments being flooded an...
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WO/1999/000552A1 |
A locking mechanism (28) is disclosed for use on the legs (14) of a jack-up offshore platform (10). Each chord (18) of the legs (14) includes a rack (22) cooperating with pinions (26) used in raising and lowering the legs. The locking me...
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WO/1998/058129A2 |
An earthquake-compliant offshore platform (10) for use in regions of strong earthquakes is disclosed in which the natural vibrational period of the jacket structure (10) is preferably in the range of about 4 seconds to about 8 seconds, w...
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WO/1998/050640A1 |
A method of increasing the structural strength of a load bearing member such as a pile (12), particularly for the purpose of reparing a damaged pile, includes the steps of securing a rigid, structural sleeve (17) around the pile (12) and...
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WO/1998/039550A1 |
A structure for the production of oil and/or gas from an oil/gas field located in geological formations under the sea bed. The structure comprises a body (1) which is designed to be lowered and placed on the sea bed and which extends fro...
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WO/1998/026979A1 |
A transporter for heavy objects at sea comprises an oblong structure with a U-shaped cross section and a prismatic enveloping surface, and comprises two long sides (2), an intermediate underside (3), an opposite open top side (4) and two...
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WO/1998/026978A1 |
A transporter for use in a method for removing a jacket (17) for an offshore platform consists of an oblong structure (1) rotatable by means of ballasting, with a sliding saddle (52), which is movable in the longitudinal direction of the...
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WO/1998/024980A1 |
A device for lifting a sea-going structure (C), such as a drilling platform consisting of a superstructure (B) and a jacket (J), which device consists of a flotation body (1) such as a boat provided with one or more laterally slidable li...
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WO/1998/022336A1 |
A floating spar structure for offshore hydrocarbon recovery operations is disclosed having a vertically oriented elongated floating hull (22) with a buoyant upper section (21) and a ballasted lower section (23) and an anchoring system (2...
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WO/1998/022663A1 |
A flotation system for a building (300) is disclosed including a watertight basement (540) having a unitary piece of concrete forming the floor and walls (615) of the watertight basement (540). Rollers (610) are attached to the watertigh...
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WO/1998/021415A1 |
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 (90). The sections are formed by joining ...
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WO/1998/021414A1 |
Cladding for the junction of a pile (5) with the underside of a structure (2) supported by that pile (a soffit (3)) comprises an encapsulation with an outer waterproof skin or shell and a gel-impregnated inner felt layer. This is shaped ...
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WO/1998/016715A1 |
The invention relates to an off-shore oil or gas unit (1) for the production of oil or gas for providing access to at least one well head conductor or riser (14), the unit having an upper topside (8) part and a lower base or jacket (2) p...
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WO/1998/013556A1 |
A large tank production method which makes it possible to producea large tank which cannot be produced on the ground. A floating base station (1012) is disposed on the sea in such a manner as to encompass a first spherical shell portion ...
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WO/1998/010145A2 |
A method and apparatus for the installation or removal of large multi-ton prefabricated deck packages (26) include the use of usually two barges (12, 13) defining a base that can support a large multi-ton load. A variable dimensional tru...
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WO/1998/005825A1 |
A tension leg platform system includes a relatively small platform (12) and relatively low capacity tendons (16), despite providing sufficient tension to risers (34) that carry hydrocarbons from seafloor wells to the platform. With the p...
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WO/1998/005826A1 |
The offshore platform may be used for supporting an offshore caisson. In the preferred embodiment, the structure comprises an ocean floor mat having a first triangular section (80) and a second triangular section (82). Caisson members (2...
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WO/1997/048858A1 |
An offshore platform structure comprising a framework (1) supporting a platform deck (18) is provided, the framework (1) having at least one leg (5). The structure further includes conductor means for conducting wellbore equipment from t...
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WO/1997/045597A1 |
The deck or superstructure (48) for an offshore production platform is shifted from a loading facility (72) onto a cargo vessel (10) that includes a large-area lifting assembly (12A, 12B, 12C). The vessel (10) transports the superstructu...
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WO/1997/039942A1 |
A method for preventing marine biofouling on the surface of a structure exposed to an aquatic environment is provided. The method comprises disposing an impermeable laminated heater element on the surfaces of the structure which is to be...
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WO/1997/025483A1 |
An ice composite body (10) comprises an inner ice core (11) covered by a protective outer armour layer (12), with means (13) for thermally insulating the ice core (11) therebetween. Refrigeration means comprising a system of conduits (14...
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WO/1997/023402A2 |
A boat lifting crane (30) includes an annular ring beam (65) mounted on the barge deck (13) of a jack-up rig (11) about one of the vertical openings (14) of the rig that receives one of the legs (15) and its elevating units (24, 25, 26)....
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WO/1997/017496A1 |
Apparatus for providing an offshore drilling operation in a sea, the apparatus comprising a drilling derrick support structure (2) having a base (4) to rest on the sea-floor (5) and a deck (7) to support a drilling derrick (1), the struc...
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WO/1997/013927A1 |
The present invention has at least one rack chock which is supported pivotally and tiltably at one end by a pin and cross head assembly located at a position between at least one leg rack and the hull of the platform. The other end of th...
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WO/1997/000194A1 |
There are disclosed embodiments of hollow concrete-walled structures for marine use, and particularly to form a semi-submersible vessel for use in the off-shore oil industry. The structure has concrete walls of hollow structure, and void...
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WO/1996/041922A1 |
The invention relates to a method for improving the feasibility of a drilling rig of jack-up type. The drilling rig (1) has a frame part (2) comprising a working deck (1a) and an essentially plane shaped bottom (1b), in connection of whi...
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WO/1996/028616A1 |
A method and apparatus for the installation or removal of large multi-ton prefabricated deck packages (30) includes the use of usually two barges (11, 12) defining a base (16) that supports a multi-ton load. A variable dimensional truss ...
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