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WO/1989/004902A1 |
A modular space framed structure (40, 50) is constructed using uniform components to provide the desired geometry of the modular structure. Rigid Y-shaped joints (10) having three branches (12, 14, 16) are interconnected to form the stru...
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WO/1989/004401A1 |
A new system for use when positioning and mounting a large construction (1) over a template (2) lying on the ground or on the seafloor (5), uses a guide ring (10) and a guide slot (11), both fixed to the construction (1), for guiding and...
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WO/1989/002848A1 |
A semi-submersible vessel (24) for a floating oil production system comprises a superstructure (62) supported by legs (60) which are joined by a base (58) at their lower ends to form a rigid structure. The vessel is made from steel boxes...
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WO/1989/002007A1 |
Procedure for the construction of a concrete shaft (10) for a platform or similar structure, where one or several of the shafts (10) will be outfitted with relatively much equipment. The shafts (10) are constructed of prefabricated secti...
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WO/1988/009765A1 |
An offshore access system comprising a mobile work platform or landing (4) adapted to be movable in relation to a structural member (5) of an offshore structure, on which, or in connexion with which, a task is to be performed, so as to e...
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WO/1988/008902A1 |
A method and a means for making a foundation for a jackable platform on a sea bottom. The platform comprises a preferably buoyant or self-floating deck structure, and a plurality of legs upon which the deck can be jacked up and/or down. ...
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WO/1988/006118A1 |
An improved platform-mounted apparatus for holding and rapidly releasing a flexible load line (38). The invention comprises wedge gripper means (100) comprising a grip frame (54, 60, 62) for mounting to the platform and a pair of opposed...
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WO/1988/004343A1 |
A device for the fixed assembly or mechanical reinforcement and the anticorrosion treatment of elements forming immersed structures, such as branching nodes consisting of a main element (1) and at least a secondary element (2) of which o...
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WO/1988/003196A1 |
Method and apparatus for removal of metal objects such as offshore platforms (O/P) supported by piles (P). Each pile is embrittled by injecting liquified gas into the environment in contact with the pile. The pile is then fragmented and ...
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WO/1988/002718A1 |
Diving bell to be used when working in the wave affecting zone at one in water standing cylindrical element like a leg (2) of a drilling platform or a bridge pillar, consisting of two or more connected or separate parts (1, 3) which can ...
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WO/1988/000273A1 |
Several embodiments of a marine riser tensioner (10, 100, 200, 300) for use in tensioning a marine riser (12) on a tension leg platform (14) by the use of elastomeric elements. In one embodiment, a plurality of elastomeric pads (60) are ...
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WO/1987/006628A1 |
An anodic boot (10, 40) for the protection of steel reinforcement in concrete support structure (11, 12, 13). The boot includes flexible panel means (20) having a first side (22) and a second side (23), at least said first side being of ...
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WO/1987/005349A1 |
A method for constructing and assembling huge modules (1), particularly trusswork modules of steel for oil rigs operating at sea, as well as a module produced by said method. The module comprises a module frame (2) including side wall fr...
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WO/1987/004742A1 |
A method of constructing a fixed offshore platform (10) using a template (24) to locate the piling locations, the template having openings for the pilings (12). The pilings (12) are then driven in so that the top (54) of each piling is a...
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WO/1987/003318A1 |
Device for taking the impression of elements of immersed structures such as branching nodes comprised of a main element (1) and of one or a plurality of secondary elements (2, 3, 4 ...). Said device comprises preformed rigid formwork ele...
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WO/1987/003026A1 |
A method and casing (1) for constructing a rigid structure upon the bottom of the water. The casing to be used is a lost pillar casing of particular shape. It is larger at the bottom than at a higher level and preferably has been compose...
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WO/1987/002640A1 |
A carriage which is receivable over an elongate member for movement therealong which comprises a base (11), a pair of arms (13) which extend divergently from the base. At least one arm (13) is extendable. The base (11) and arms (13) supp...
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WO/1987/002323A1 |
Diving bell to be used when working in the wave affecting zone at one in water standing cylindrical element like a leg (2) of a drilling platform or a bridge pillar, consisting of two or more connected or separate parts (1, 3) which can ...
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WO/1987/001672A1 |
A remotely operated device which is submersible and which can ''walk'' on support structures of offshore platforms to allow maintenance and other operations to be performed at various locations. The device (10) comprises a pair of legs (...
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WO/1986/006696A1 |
An underwater servicing apparatus comprising a part annular body (20) a plurality of arms (21) extending to each side of the body and being pivotally mounted thereto to be movable radially inwardly, support elements (22) mounted to said ...
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WO/1986/006771A1 |
The construction of various structures is assisted by artificially freezing water or water-containing material in or adjacent a lower region of the structure or between elements of the structure. In the case of a gravity platform (1), fo...
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WO/1986/006340A1 |
The equipped deck (1) is charged onto a self-elevating platform (2). The platform is positioned close to the fixed platform (11) and the deck is lifted from the self-elevating platform (2) to the level of the fixed platform (11). The dec...
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WO/1986/006121A1 |
In the area just above and below the surface of the water the swell is so bad that no divers or boats can get to the area to clean the legs. According to the invention there is provided apparatus (1) for maintenance of a length of an oil...
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WO/1986/005531A1 |
A jacket of an offshore platform has a special internal structure (4) of which one side (9) coincides with one side of the jacket but an opposite side (8) is spaced from the corresponding opposite outer side of the jacket. The jacket is ...
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WO/1986/004623A1 |
Arrangement in a offshore concrete platform comprising a base structure (1) and at least one tower structure (3) having a tower foot (5). The tower foot (5) is supported by a pair annular, downwards diverging, conical shell structures (6...
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WO/1986/003468A1 |
An arrangement for use in the protection of pipes and trunks (10) in a splash zone on a rig construction or similar installation at sea using a cylindrical container (12) closed below and open above and arranged along the pipe or the tru...
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WO/1986/002966A1 |
A foundation element, preferably for subsea use. The element (10) consists of a number of open-bottom cells (12) which are closed at their top and which are delimited by cell walls (16) and comprise a common roof (14). The element (10) i...
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WO/1986/001845A1 |
Method of constructing an offshore truss work type tower structure, and a tower structure comprising outer legs and leg connecting trusses, where all legs being parallel, trusses between outer legs and trusses arranged inwardly from oute...
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WO/1986/001752A1 |
A method for providing a tubular node in frame work struss structures, such as offshore platforms for oil drilling and production activities of the type consisting of interconnected legs and braces of steel tube elements. For formation o...
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WO/1986/000353A1 |
An underwater operating system comprises an underwater platform (2), equipment (5-8) on the platform, mounted as replaceable units, a rail track (13, 14) on the platform and an intervention or handling unit in the form of a load carrying...
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WO/1985/005645A1 |
A mobile, offshore, jack-up, marine platform adjustable for sloping sea floor (3) having a mat (2), a multilegged column (5) pivotally connected thereto and a work platform (8) slidably mounted on the column (5). Means are included for i...
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WO/1985/005138A1 |
In order to set a unit structure on a soft sea bed, it is necessary to reform the soft sea bed by injecting a cement-containing hardening agent thereinto and kneading the mixture of the hardening agent and the earth in the sea bed, for t...
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WO/1985/004924A1 |
At least two generally parallel compression rims (32) are joined by tension element spokes, such as cables (36). A rim separating means, such as columns (38), holds the rims apart thus maintaining spoke tension. The resulting structural ...
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WO/1985/004682A1 |
A gravity platform for a great water depth, wherein the platform in operational condition is intended to stand stably on the sea bed (3) essentially by its own weight and in this position is intended to project above the water surface (4...
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WO/1985/004633A1 |
A method of constructing a large-sized marine structure (1) characterized in that the method consists of the steps of providing a pond (5), one end of which faces a seawater area via a gate (6'), in the vicinity of a dock (2), at least o...
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WO/1985/004683A1 |
Reinforced concrete sea platform comprising a cellular basement (A), a support (B) and an above-water part (C) which are assembled from precast concrete elements shaped as faceted hollow prisms (1, 2) assembled so as to leave the gaps (6...
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WO/1985/004437A1 |
An offshore, bottom supported platform structure comprising a tower structure (1) of low bending stiffness which is laterally supported at several elevations by means of inclined, pre-tensioned stay cables (2). The tower structure (1) is...
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WO/1985/003485A1 |
A process for maintaining and cleaning of outer surfaces of construction members in a rig construction at sea is especially useable for the removable and prevention of marine overgrowth on said outer surface. The construction members (11...
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WO/1985/001925A1 |
Anchor device for use offshore or onshore comprising a plate (15) to bear on the bottom or ground surface, and a plurality of cylindrical elements (16) extending through the plate (15) into the bottom or ground layers and forming a tubul...
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WO/1985/001971A1 |
To inhibit marine growth on a submerged framework, one or more collars are placed loosely around each member of the framework, the collars having outwardly projecting vanes so that ambient water movement causes movement around or along t...
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WO/1985/001762A1 |
A long strut between a sea-platform and the ocean bed needs to have its weight supported. Otherwise, much of its strength is used merely in supporting itself. The struct disclosed is made in sections (64, 65), joined typically by screw t...
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WO/1984/002151A1 |
A gravity-type offshore structure (10), useful as an offshore drilling platform, e.g., is provided for use in ice-covered waters such as offshore of the Alaskan and Canadian North Slope. The structure (10) is composed of a plurality of f...
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WO/1984/001592A1 |
An offshore platform structure (1) comprising a deck superstructure (4) which is supported at least by three inclined lower supporting columns (5) which are arranged apart and extend convergingly upwards towards an intermediate structure...
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WO/1983/004061A1 |
Artificial island or work platform comprising a pontoon or work floor (2) and at least three columns (3), displaceable in vertical direction with respect to the pontoon respectively the work floor (2) and attachable thereto. The columns ...
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WO/1983/001932A1 |
Work ship used to install a large offshore structure such as a marine plant onto a foundation structure installed in the sea by transporting the offshore structure to the installation field. A plurality of elevationally movable support l...
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WO/1983/001931A1 |
Work ship used to install a large offshore structure such as a marine plant onto a foundation structure installed in the sea by transporting the structure to the installation field. The ship has a lower hull (2), a plurality of guide pos...
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WO/1983/001235A1 |
The device comprises two parallel groups of floats (1, 2). Each group comprises a horizontal float (3, 4) to which vertical floats (5-14) are attached through one of their ends, the other ends being attached to longitudinal beams (17, 18...
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WO/1983/000351A1 |
Elevating device for an artificial island or work platform comprising a pontoon (1) or work floor and a number of columns (2) displaceable in vertical direction with respect to the pontoon (1) respectively the work floor by means of the ...
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WO/1982/003098A1 |
A floatable carrier (10) is loaded with piles (24), caused to sink at a selected location, and then used to drive the piles into ocean floor. The carrier is then raised for reloading. A template (12) or other structure to be anchored by ...
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WO/1982/002220A1 |
Device for dampening shocks between a load (1) and a floating support (70), when removing the load from said support, said support comprising at least a girder (10) on which bears the load, characterized in that it comprises means (11, 1...
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