Described herein is an offshore buoyant structure, a floating buoyant structure, and methods of loading and unloading a floatable wind turbine substructure. The offshore buoyant structure includes a split hull constructed and dimensioned in a manner to provide a long moon pool; and a floatable wind turbine substructure accommodated by the split hull and configured to receive a floating wind turbine with a portion of the floating wind turbine extending downwardly into the long moon pool such that relative motion between at least the offshore buoyant structure and the floatable wind turbine substructure or floating wind turbine when received by the floatable wind turbine substructure is minimized. The floating buoyant structure includes a split hull constructed and dimensioned in a manner to provide a long moon pool, the split hull is configured to accommodate a floatable wind turbine substructure or a floating wind turbine assembly and minimize relative motion therebetween.
B63B 77/10 - Transporting or installing offshore structures on site using buoyancy forces, e.g. using semi-submersible barges, ballasting the structure or transporting of oil-and-gas platforms specially adapted for electric power plants, e.g. wind turbines or tidal turbine generators
2.
A BUOYANT STRUCTURE FOR RECEIVING A TOWER OF A WIND TURBINE IN OFFSHORE DEPLOYMENT
Disclosed herein is a buoyant structure for offshore deployment. The buoyant structure comprises a first deck having a first channel through the first deck; a second deck having a second channel through the second deck, wherein the first deck and second deck are coupled to each other and arranged spaced apart from each other; and a plurality of floatable substructures coupled to and around at least one of the first deck and the second deck, the plurality of floatable substructures arranged spaced apart from one another, wherein the first channel and the second channel are aligned to receive at least a portion of a tower of a wind turbine.
According to embodiments of the present invention, a floating structure is provided. The floating structure includes an open top end; an open bottom end opposite the open top end; an annular wall extending between the open top end and the open bottom end; and a cylindrical structure arranged off center of the floating structure and configured to support a tower. The annular wall forms a circumferential peripheral of the floating structure to provide a central moonpool. At least part of the cylindrical structure extends alongside and coupled to the annular wall. According to further embodiments, an apparatus including the floating structure and a tower supported by a cylindrical structure of the floating structure is also provided.
According to embodiments of the present invention, an apparatus for adjusting a wind turbine system is provided. The apparatus includes a structure including a top surface opening and a bottom surface opening opposite to the top surface opening, the structure configured to receive a mast of the wind turbine system through the top surface opening and the bottom surface opening; a jacking mechanism operable to raise or lower the structure with respect to the mast; and a locking mechanism configured to releasably secure the structure to the wind turbine system. According to further embodiments, a mast of a wind turbine system, a system including the apparatus and the mast, and a method for adjusting a wind turbine system are also provided.
This publication relates to a shallow water terminal, preferably for storing and loading or unloading hydrocarbons, such as LNG, oil or gas. The base structure comprises a floatable, and removable seabed substructure (10) intended to be supported by a seabed (30), the seabed substructure (10) comprising a base structure (11) provided preferably with an upwards extending wall structure (22), arranged along at least a part of the periphery of the base structure (11), the base structure (10) preferably also being provided with an opening (23) in the wall structure (22) for allowing the floatable module to be berthed in and supported by the seabed substructure (10). The base structure (10) is provided with strong points (24) configured to receive the ends of preinstalled vertical piles (14) for at least temporary support of the base structure (11) during a piling operation for permanent piling of the base structure (10) to the sea bed (30). The publication also relates to a method for piling a base structure on or above a seabed (30).
E02B 17/02 - Artificial islands mounted on piles or like supports, e.g. platforms on raisable legsConstruction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
E02D 23/02 - Caissons able to be floated on water and to be lowered into water in situ
E02D 23/16 - Jointing caissons to the foundation soil, specially to uneven foundation soil
E02D 27/20 - Caisson foundations combined with pile foundations
A floating plant (8) comprises a container (1) and a mooring element (2) provided with respective guide elements (10, 13). The guide elements have a mutual complementary shape such that the container (1) and the mooring element (2) may move freely with respect to each other in directions that coincide with the container central axis (CL). A plurality of elongated buoyancy elements (10) are arranged on the container outside and arranged between the container bottom end (17) and the container upper end (18), preferably parallel with the container central axis (CL). The container may be transported to the installation site, floating in the water and stabilized by means of the buoyancy elements (10). The mooring element (2) may be transported to the installation site, either in one piece or on several pieces (2a, 2b), and mounted such that it surrounds a portion of the container. The container is raised and lowered in the body of water by controlling the amount of water in the container.
Various embodiments relate to a method and a seabed supported base structure for providing a shallow water drilling terminal, where a prefabricated floating seabed substructure is towed to site, ballasted to rest on the seabed and/or piled to the seabed forming a seabed foundation. The seabed supported base structure is provided with at least one cantilevered unit with openings for drilling of wells, projecting sideways out from the exterior side of a vertical wall, terminated above sea level. A prefabricated floating drilling module provided with an outrigger with sidewise movable drilling device is towed to the site, guided into the seabed substructure through an opening in the wall structure at the periphery of the base structure, ballasted and mated onto the base structure, whereupon wells are drilled from a drilling gear. Upon completed drilling and operation of the wells, the drilling unit is removed and substituted by a production unit.
This publication relates to a shallow water terminal, preferably for storing and loading or unloading hydrocarbons, such as LNG, oil or gas. The base structurecomprises a floatable, and removable seabed substructure (10) intended to be supported by a seabed (30), the seabed substructure (10) comprising a base structure (11) provided preferably with an upwards extending wall structure (22), arranged along at least a part of the periphery of the base structure (11), the base structure(10) preferably also being provided with an opening (23) in the wall structure (22) for allowing the floatable module to be berthed in and supported by the seabed substructure (10).The base structure (10) is provided with strong points (24) configured to receive the ends of preinstalled vertical piles (14) for at least temporary support of the base structure (11) during a piling operation for permanent piling of the base structure (10) to the sea bed (30).The publication also relates to a method for piling a base structure on or above a seabed (30).
E02B 17/00 - Artificial islands mounted on piles or like supports, e.g. platforms on raisable legsConstruction methods therefor
E02B 17/02 - Artificial islands mounted on piles or like supports, e.g. platforms on raisable legsConstruction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
A floating installation for temporarily accommodating objects that are being transported from a first position to a second position located on a marine installation, characterized by the floating installation including at least one marine docking station adapted for the call of a seagoing transport vessel, the at least one docking station being integrated in the installation, at least one helipad and living quarters, and a method of transporting personnel and equipment.
B63B 35/44 - Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
B63B 27/30 - Arrangement of ship-based loading or unloading equipment for cargo or passengers for transfer at sea between ships or between ships and off-shore structures
B63B 21/00 - Tying-upShifting, towing, or pushing equipmentAnchoring
10.
Production unit having a ballastable rotation symmetric hull and a moonpool
A floating production unit is operable for production and storage of hydrocarbons. The production unit exhibits in operation movement properties rendering connection of one or more loose hanging risers (5) of suitable material possible. Such a unit comprises a hull (1) and a deck (4) in an upper end of the hull, the deck being equipped adequately in accordance with the intended application. The floating production unit is distinguished in that the hull (1) is configured to allow suspension of the riser (5) on at least one frame (6) arranged in a shaft/moonpool (3) in a center of the hull (1) wherein vertical movements of the hull (1) are minimized, and that the moonpool (3) of the unit surrounds and protects an upper part of the one or more risers (5) and fixed tubes for transfer of fluid to a processing facility of the production unit against external forces such as waves, ice and vessel collisions, in addition to corresponding protection during connection of the one or more risers (5) unto the at least one frame (6).
Mooring system for a tanker, i.e. a mooring of a conventional tanker to an installation with fixed orientation, wherein a conventional tanker (3) which is to be moored to the installation is arriving in a direction favorable to wind, current and waves. By mooring a conventional tanker (3) in four points (A, B, C, D) on a tanker (3), wherein the hawsers to the points (C, D) are connected on board a platform (1) and hawsers to the points (A, B) are connected to two separate buoys (4, 5) and then tightening/slackening the hawsers until the tanker (3) has arrived in the desired/correct position.
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