Abstract:
Vessel comprising a number of composite storage tanks for transport of compressed natural gas (CNG) or a combination of gas and liquid, which tanks have an elongated, cylindrical intermediate section and a lower end and an upper end, the tanks being arranged side-by-side vertically standing in the vessel, distinguished in that the hull, the bulkheads and the deck of the vessel form a closed space enveloping all tanks except from the upper end of each tank or selected tanks, for which tanks the upper end extends sealingly out of the closed space, all feed-throughs in the tanks with couplings for loading and unloading are outside of the closed space, at the upper end of the tanks, and the tanks are supported such that each tank can expand or contract freely within the operating range of the tanks with respect to pressure and temperature.
Abstract:
Seabed located storage for crude oil or other fluid, distinguished in that it is comprising a storage section in form of an oil and waterproof cloth formed as a flexible balloon that can be filled with, store and emptied for a storage fluid, a structure section formed as an external casing over the storage section, which structure section is closed in the upper part such that an upward close volume of size at least corresponding to the volume of the storage section is formed, but with openings to the surroundings in the lower part, an anchoring section formed as a substructure between the structure section and the seabed, with means for anchoring to or stable placement on the seabed, and a transfer section comprising pipes and valves for loading and unloading of a storage fluid, arranged in substance exterior to the upper part of the storage.
Abstract:
Floating storing unit for liquid cargo, such as oil, condensate etc. The storing unit should during normal operations, be unmanned, and is moored in a free, rotatable way relative to a cargo transferring construction mounted close to the bow of the unit. The unit comprises an elongated hull having narrow centre tanks stretching in the longitudinal direction of the unit and side tanks extending on each side of the centre tanks, and being self-draining toward the centre tank. The centre tank is drained toward cargo transferring pumps in the forward and/or aftward end of each centre tank. At the stern of the unit loading/unloading equipment is mounted. The centre and side tanks are filled with gas and liquid so that the volatile liquids in a small extent liberate gases into the atmosphere.
Abstract:
System for offshore production of oil or gas, comprising a surface vessel (3) having means for maintaining a desired position and orientation, a bottom installation (5) at the seabed (1) for at least two production wells, and risers (6, 22) for connecting the bottom installation (5) to the vessel (3). The vessel (3) is provided with drilling equipment (8) for wells at the seabed (1) and with process equipment (9) for produced oil or gas. The bottom installation (5) comprises a template (10) having its foundation at the seabed and being provided with a manifold unit (11) and is designed with at least two wellhead sections adapted for installating associated Christmas trees (14A). A drill string (21) is adapted to extend from the drilling equipment (8) on the vessel (3) to an operation module (20) at the bottom installation (5), and a product riser (6) is adapted to connect the operation module (20) to the process equipment (9) on the vessel (3).
Abstract:
A device for closing a downwardly open receiving space (3) in the bottom of a floating vessel (1), especially a space for receiving a submerged buoy for the transfer of liquid hydrocarbons, wherein the buoy is raised by means of a line means passing through the receiving space (3). The device consists of an at least bipartite shutter means (2) at the lower end of the receiving space (3) and comprises shutter elements (4) which are rotatably fastened to the bottom (5) of the vessel (1) and have a free end (6) having a central retracted edge portion (14) and a transverse edge portion (12). The two transverse edge portions (12) of the free end (6) are arranged to cause closing by mutual cooperation with at least one corresponding edge portion on at least one other shutter element, and the central retracted edge portion (14) forms a part of a sidewall (16) in a central guide opening (10) in the shutter means (2) when the free end (6) of the shutter element (4) during the closing is moved towards the corresponding free end of the other shutter element (4) or remaining shutter elements of the shutter means (2).
Abstract:
An arrangement in a vessel for loading or unloading of a flowable medium, especially oil, the vessel (1) being provided with a submerged downwardly open receiving space (3) for receiving and securing a submarine buoy (2) which is anchored to the sea bed (4) and is coupled to at least one transfer line (6) for medium. The receiving space (3) is arranged at a submerged location at the outer side of the hull of the vessel and has an at least partly downwards essentially conically enlarged shape, for mating with a buoy (2) of a corresponding outer shape. In connection with the receiving space (3) there is provided a service shaft (9) connecting the receiving space (3) with the deck (8) of the vessel. The receiving space (3) preferably is formed from a module built into the bow portion of the vessel (1).
Abstract:
A method and a system for positioning of a floating vessel (1) against the wind and/or wave/current direction prevailing at any time, especially a vessel for the production of hydrocarbons from a subsea source. The system comprises a number of anchor lines (4-9) which, at one of their ends, are fastened to respective winches (10-15) placed in the bow (16) and stern (17) of the vessel, and at their other ends are fastened to respective anchors (18-21) anchored in the seabed at places located at chosen horizontal distances from the vessel (1) and having a chosen mutual angular distance measured along a horizontal circle with the centre in the vessel. The method consists in that the vessel by hauling-in and slackening, respectively, of chosen anchor lines by means of the associated winches is turned and oriented with its longitudinal axis (L) within an angular range of about 180 DEG , so that the bow (16) or the stern (17) is oriented against the prevailing wind and/or wave/current direction.
Abstract:
A system for rotatable mounting of a floating vessel (1) to a submerged loading/unloading buoy (2) which is anchored to the sea bed, the buoy (2) being of the type which is adapted to be introduced into and fastened in a releasable manner in a submerged downwardly open receiving space (3) in the vessel (1), the buoy (2) during operation being connected to at least one transfer line (4) and forming a transfer connection between this line (4) and a tube system (10) on the vessel. The buoy (2) comprises an outer member (15) which is arranged to be rigidly fastened in the receiving space (3), and a central inner member (16) which is rotatably mounted in the outer member (15), so that the vessel (1) is able to turn about the central member (16) when the buoy (2) is fastened in the receiving space (3). Further, the upper end of the central member (16) is connected to the tube system (10) of the vessel through a swivel means (31) and through at least one flexible joint means (33 resp. 34).
Abstract:
A locking and release mechanism for securing a loading/unloading buoy (2) on a vessel (1), wherein the buoy (2) is of the type to be introduced into a submerged downwardly open receiving space (3) in the vessel (1), and to be fastened in a releasable manner in the receiving space. The mechanism comprises hydraulically actuated locking elements (40) mounted about horizontal axes (41) at the sides of the receiving space (3), to pivot between the locking and releasing positions, the buoy (2) having a peripheral collar (20) having a downwards facing abutment edge (21) for engagement with the locking elements (40) in the locking position thereof.
Abstract:
Vessel (1), comprising : equipment to load LPG, one or more tanks (2) for stable storage of LPG under transport, and equipment to unload LPG; equipment to load condensate or another liquid that is stable under atmospheric pressure, one or more tanks (3) for storage of said condensate or liquid under transport, and equipment to unload said condensate or liquid. The vessel is distinguished in that it further is comprising : equipment to load liquid CO 2 , one or more tanks (4) for stable storage of liquid CO 2 under transport, and equipment (5) to unload liquid CO 2 to another unit, for example for subsequent injection into an underground reservoir; a separation unit (6) that is capable to receive a flow (7) of wet gas and condensate for separation into LPG, condensate and dry gas, such that LPG and condensate can be passed to respective tanks (2, 3) in the vessel and dry gas (8) can be passed from the vessel to another unit. The invention is also comprising an additional vessel according to the above, but without a separation unit. The invention is further comprising a system for energy production without emission of CO 2 to the atmosphere.