A semi-submersible service vessel (100) for a floating installation (102) has a hull (104) and a ballasting system. The ballasting system is arranged to selectively lower the hull (104) to a first draft and raise the hull (104) to a second draft. The second draft is smaller than the first draft. At least one submersed elongate lifting fork is fixed to the hull (104) and is configured to extend across the underside of the floating installation (102) and engage the underside of the floating installation (102) when the hull (104) is raised from the first draft to the second draft. Wherein the at least one lifting fork is arranged to lift the entire floating installation (102) when the hull (104) is raised from the first draft to the second draft, and a method of servicing a floating installation (102) with a semi-submersible service vessel (100).
B63B 35/44 - Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
B63B 1/10 - Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
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 SEMI-SUBMERSIBLE SERVICE VESSEL FOR A FLOATING INSTALLATION AND A METHOD OF SERVICING A FLOATING INSTALLATION.
A semi-submersible service vessel (100) for a floating installation (102) has a hull (104) and a ballasting system. The ballasting system is arranged to selectively lower the hull (104) to a first draft and raise the hull (104) to a second draft. The second draft is smaller than the first draft. At least one submersed elongate lifting fork is fixed to the hull (104) and is configured to extend across the underside of the floating installation (102) and engage the underside of the floating installation (102) when the hull (104) is raised from the first draft to the second draft. Wherein the at least one lifting fork is arranged to lift the entire floating installation (102) when the hull (104) is raised from the first draft to the second draft, and a method of servicing a floating installation (102) with a semi-submersible service vessel (100).
B63B 35/00 - Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
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
F03D 13/25 - Arrangements for mounting or supporting wind motorsMasts or towers for wind motors specially adapted for offshore installation
A mooring buoy (100) for a vessel comprises a floating body (102) comprising a first portion (120) and a second portion (122) wherein the first portion is rotatable with respect to the second portion. At least one anchoring line (108, 110, 112) is connected between the second portion and the sea floor. At least one electric cable (204) is mounted on the first portion and connected to a power supply. The at least one electric cable has a free end (210) connectable to an electric circuit of the vessel. At least one mooring line (126) is connectable between the floating body and the vessel. The mooring buoy (100) comprises a cable length adjustment mechanism (230) configured to adjust the length of the at least one electric cable (204) when the rotatable first portion (120) rotates with respect to the second portion (122).
A mooring buoy (100) for a vessel (102) comprises a floating body (104) arranged to project out of the water (106). At least one buoy anchoring line (110, 112, 114) is connected between the floating body and the sea floor (108). At least one vessel mooring line (144) is connectable between the mooring buoy and the vessel. At least one moveable electric cable (130) is connected to a power supply and the moveable electric cable has a free end connectable to a switchboard of the vessel when the vessel is tethered to the at least one vessel mooring line. The free end of the at least one moveable electric cable is moveable between a retracted position and a connected position and the tension of the at least one vessel mooring line is greater than the tension in the at least one moveable electric cable when the free end of the at least one moveable electric cable is in the connected position.
A method of supplying a load between a vessel and an offshore jackup (100). The offshore jackup has a hull (102) and a plurality of moveable legs (104) engageable with the seafloor. The offshore jack-up is arranged to move the legs with respect to the hull to position the hull out of the water. The method comprises securing the vessel with respect to the hull of the offshore jack-up when the hull is positioned out of the water and the legs engage the seafloor. A lifting mechanism (406) mounted on the offshore jack-up (100) engages with a cargo carrying platform (228) positioned on the vessel. The platform is lifted with the lifting mechanism between a first position on the vessel and a second position clear of the vessel.
E02B 17/00 - Artificial islands mounted on piles or like supports, e.g. platforms on raisable legsConstruction methods therefor
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 35/00 - Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
6.
A METHOD OF SECURING AND TRANSFERRING A LOAD BETWEEN A VESSEL AND AN OFFSHORE INSTALLATION AND AN APPARATUS THEREFOR
A method of securing a vessel (206) with an offshore jack-up (100). The offshore jack-up (100) has a hull (102) and a plurality of moveable legs (104a, 104b, 104c, 104d) engageable with the seafloor. The offshore jack-up (100) is arranged to move the legs (104a, 104b, 104c, 104d) with respect to the hull to position the hull (102) out of the water. The method comprises moving at least a portion of a vessel underneath the hull (102) of the offshore jack-up or within a cut-out (400) of the hull (102) when the hull is positioned out of the water and the legs (104a, 104b, 104c, 104d) engage the seafloor. A stabilizing mechanism (502, 504, 506, 508, 510, 512) mounted on the offshore jack-up (100) is engaged against the vessel (206). The stabilizing mechanism is pushed down on the vessel to increase a buoyant force acting on the vessel.
B65G 67/62 - Loading or unloading ships using devices influenced by the tide or by the movements of the ship, e.g. devices on pontoons
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
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
E02B 17/08 - Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
7.
A METHOD OF INSTALLING A CRANE ON A PORTION OF AN OFFSHORE WIND TURBINE GENERATOR AND A VESSEL THEREFOR
A method of installing at least one portion of a crane on a portion of an offshore wind turbine generator from a vessel having a crane support structure, the method comprises suspending the portion of the crane in the support structure above the vessel. The method comprises compensating for relative motion between the portion of the offshore wind turbine generator and the vessel such the suspended portion of the crane is stable relative to the portion of the offshore wind turbine. The method also comprises transferring the suspended portion of the crane between the vessel and the portion of the offshore wind turbine.
A method of installing a crane (300) on a portion of an offshore wind turbine generator (308 ) from a vessel (100) having a crane support structure (332), the method comprises: elevating the crane (300) in the support structure (332) above the vessel (100); transferring the elevated crane (300) between the vessel and the portion of the offshore wind turbine (308); and suspending the crane (300) from a portion of the offshore wind turbine (308) with one or more cables (700, 702).
F03D 13/25 - Arrangements for mounting or supporting wind motorsMasts or towers for wind motors specially adapted for offshore installation
B66C 23/20 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes with supporting couples provided by walls of buildings or like structures
9.
A METHOD AND SYSTEM OF INSTALLING A CRANE ON A PORTION OF AN OFFSHORE WIND TURBINE GENERATOR AND A REMOVEABLE CRANE ADAPTER THEREFOR
A method of installing a crane (300) on a portion of an offshore wind turbine generator (102) from a vessel (100) comprises attaching a removable crane adapter (400) having a first coupling (702) to the portion of the offshore wind turbine generator. The method also comprises mounting a crane (300) having a second coupling (704) on the removable crane adapter, the second coupling being mechanically engageable with the first coupling wherein the crane adapter supports the weight of the crane on the portion of the offshore wind turbine.
B66C 23/20 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes with supporting couples provided by walls of buildings or like structures
F03D 13/10 - Assembly of wind motorsArrangements for erecting wind motors
A crane system mountable on a section of an offshore wind turbine generator is disclosed. The crane system comprises a crane body having a base portion and a top portion, a coupling attachable to the section of the wind turbine generator, whereby, when the coupling is attached to said section, the coupling is arranged to receive the base portion of the crane body, wherein the base portion is pivotable in the coupling. The crane system comprises a hoisting system to hoist the top portion of the crane body so that the crane body pivots around the coupling and the top portion engages the wind turbine generator above the coupling. A method of installing a crane system on a section of an offshore wind turbine generator from a vessel is also disclosed.
The invention relates to a method for recovering a pipe (6) from a subsea oil well by use of a vessel (1) carried decommissioning equipment, the method comprising winding the pipe onto a drum (11) while at the same time moving the pipe in direction essentially perpendicular to the winding direction.
F16L 1/16 - Laying or reclaiming pipes on or under water on the bottom
E21B 43/01 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
E21B 41/00 - Equipment or details not covered by groups
A maritime vessel having a bow, a stern and a hull. Within the hull a cargo compartment being able to hold fluid and having a vertically extending column is provided. The cargo compartment contains a rotatable buoyant inner cargo tank extending around said column. The lower end of the vertically extending column is attached to the hull of said vessel.
The invention relates to a method of extracting oil from a reservoir. The method comprises the following steps: drilling of a first well; mounting and cementing of well pipes in the first well; mounting of a Blow Out Preventer or Lubricator in the top of the well. At a distance from this well, a second well is drilled against a section of the first well such that the second well gets into operational contact with the first well. Hereafter well pipes are mounted and cemented in the second well; a Blow Out Preventer or Lubricator is mounted in the top of the second well; where after the drilling from the first or the second well is continued down into the reservoir.
A winch for a ship and for hauling in or laying out chain (3) or wire and comprising a driving motor (18). A driving shaft (1), a driving wheel (2), and a turntable (5) for supporting the driving wheel are adapted so that the driving shaft (1) is essentially vertically and axially displaceable between a position in which the driving shaft (1) is positioned at one side of the top side of the turntable (5) and a position in which the driving shaft (1) is positioned at both sides of the top side of the turntable (5).
The invention relates to an apparatus for performing a shear connection (1) between a riser (2) and a subsea blow out preventer (BOP) (13) in a well for producing and/or enhancing the production of oil and/or gas, where the shear connection (1) comprises first receiver means (4) and second receiver means (5), which first and second receiver means (4, 5) are held together by shearable means that shears when a certain force is exceeded. In an embodiment the first receiver means (4) is located at the lowermost end of the riser (2) and the second receiver means (5) is located at the upper part of a lower marine riser package (LMRP) (3). In further embodiments the shearable means is bolts, bolting the shear connection (1) together and subsea control system pods (8, 9) are mounted on the lower marine riser package (LMRP) (3) side of the shear connection (1).
To keep the water around an off-shore installation (1) free from a harmful impact of ice, a vessel (5) is used to deploy an anchor (6) in a position at a distance from the off-shore installation (1) and in a direction which, seen from the off-shore installation (1), is substantially in parrallel with the direction of movement (P) of the ice. By means of the machinery of the vessel, which preferably comprises azimuth propellers, the direction of the anchor line is adjusted and so is the orientation of the vessel relative to the anchor line to the effect that thenpropellers can be used to crush and dispose of the ice without using energy to hold the vessel up against the pressure of the ice.
To keep the water around an off-shore installation (1) free from a harmful impact of ice, a vessel (5) is used to deploy an anchor (6) in a position at a distance from the off-shore installation (1) and in a direction which, seen from the off-shore installation (1), is substantially in parallel with the direction of movement (P) of the ice. By means of the machinery of the vessel, which preferably comprises azimuth propellers, the direction of the anchor line is adjusted and so is the orientation of the vessel relative to the anchor line to the effect that the propellers can be used to crush and dispose of the ice without using energy to hold the vessel up against the pressure of the ice.
patents
