Abstract: A system for production of oil and heavier gas fractions from a reservoir under a seabed includes a field installation with at least one production well and one injection well, a vessel with means to be connected to a loading and unloading station, and a receival plant configured to load and unload the vessel. The vessel includes a high-pressure three-phase separator, an injection compressor, and either water cleaning equipment or water injection equipment that the vessel can load high-pressure well fluid that is brought into the separator and separated to lighter gas fractions, oil and heavier gas fractions, and water, of which oil and heavier gas fractions are brought to high-pressure storage tanks in the vessel, which high-pressure storage tanks include high-pressure gas which thereby is displaced out of the tanks and injected into the reservoir together with the lighter gas fractions, via the injection compressor.

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: System for loading and unloading of hydrocarbons in waters with varying conditions, comprising an icebreaking vessel (10) moored to a sea bed (12) by a turret buoy (11) and where a tanker (16) by at least one hawser (17) is moored with its bow to the aft end of the icebreaker either at a distance from the icebreaker (10) in situations without influence from ice, or in physical contact with the icebreaker in situation when ice is present. The system further comprises at least one hose (24) and valve system for transferring hydrocarbons from the icebreaker (10) to the tanker (16).

Abstract: System for production of oil and heavier gas fractions from a reservoir under a seabed, comprising: a field installation with at least one production well and one injection well, which wells are connected with risers to a loading and unloading station, a vessel with means to be connected to the loading and unloading station, a receival plant with means to load and unload the vessel.

Abstract: System for loading and unloading of hydrocarbons in waters with varying conditions, comprising an icebreaking vessel (10) moored to a sea bed (12) by means of a turret buoy (11) and where a tanker (16) by means of at least one hawser (17) is moored with its bow to the aft end of the icebreaker either at a distance from the icebreaker (10) in situations without influence from ice, or in physical contact with the icebreaker in situation when ice is present. The system further comprises at least one hose (24) and valve system for transferring hydrocarbons from the icebreaker (10) to the tanker (16).

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: There is provided a system comprising an assembly for storage or transport of compressed gas on a floating structure (1), wherein the assem+y (3) comprises a plurality of separate, parallel, laying pipes (4) which are closed at both ends and are supported discretely or continuously by a supporting structure (5). The pipes (4) are releaseably attached to the supporting structure (5) only at one end thereof, where the pipes are coupled to a manifold system (˜) for filling or emptying of the pipes, and the supporting structure (5) is arranged to allow unobstructed longitudinal guiding of the pipes (4) in the storage assembly (3), so that the pipes individually or in groups can be introduced to or removed from their operating position in the storage assem+y via openings at the ends of the assem+y located oppositely to said one end.

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: A system for transfer of liquefied natural gas (LNG) between two vessels (1, 2). The system comprises a coupling head (7) mounted at one end of a flexible pipe means (4) and arranged for attachment on a platform (19) at one end of one vessel (1) when it is not in use, and a connection unit (8) mounted at one end of the other vessel (2) and comprising a pull-in funnel (50) shaped for guided pull-in of the coupling head (7) to a locking position in which the pipe means (4) can be connected to transfer pipes (56) on the other vessel (2) via a valve means (31) arranged in the coupling head. The coupling head (7) is provided with a guide means (40) and is connected to at least one pull-in wire (42) for guided pull-in of the coupling head (7) into the connection unit (8) by a winch means (66) an the other vessel (2).

Abstract: A device for installation in a floating vessel which is intended for receiving a buoy or a turret in a submerged receiving space at the bottom of the vessel. The device comprises a tubular body (5) dimensioned for installation in a shaft (2) extending vertically through the hull of the vessel and which, at its lower end, is arranged to receive a module unit (6) provided with a through opening (8) for receiving the buoy/turret. When the module unit (6) is installed in the tubular body (5), the module unit at its lower end forms a seal (37) against the tubular body (5), and at its upper end the module unit (6) is fixed in relation to the tubular body (5) by locking means (40).

Abstract: Device for storage or mooring of a loading hose (1), preferably for unloading of petroleum fluids from a vessel (100) at sea, with a floating loading hose (1) with the first end (1a) connected to an after manifold (6) of the vessel (100), with the second, free end (1b) of the loading hose (1) arranged to be caught and connected preferably to a midship manifold (7) of an other vessel (200). (a) A swivel (8) arranged for permanent pivotable connection between the first end (1a) of the loading hose (1) and the after manifold (6). (b) Hoisting appliances (9) with movable catch hooks (14) adapted to the loading hose (1) and arranged with mutual separation along the hull's side (102) forward from the after manifold (6) and arranged for complete or partial elevation of the loading hose (1) from the natural floating position.

Abstract: The invention concerns an arrangement for load transfer between the stern of a first vessel and the bow of a second vessel. Two bow hawsers are arranged to run from each of their anchor points near the sides of the ship at each side of the stern, to the bow, with the hawsers having approximately the same length. A loading hose is arranged to run centrally from the middle point of the stern of the first vessel to the bow of the second vessel.

Abstract: A floating multi-unit structure to be used for various operations offshore, on lakes, rivers, etc. It comprises two types of main units, termed propulsion/support unit and operative unit, respectively. Each such main unit includes at least one functional member. The two main units are adapted to be interconnected through their functional members and functionally integrated in a manner resulting in synergetic effects of the totality of the interconnected units. The propulsion/support unit includes one or more vessels equipped with propulsion machinery and equipment to meet support functions. When the propulsion/support main unit is comprised of several vessels, the individual vessels are functionally integrated in a manner resulting in a synergetic effect providing the propulsion/support main unit with the intended combined properties. The operative main unit includes one or more barge members equipped to perform the intended operations.

Abstract: A riser bundle comprising a number of risers (2) extending in a wave configuration from the bottom of a body of water up to a floating vessel or the like, the riser bundle (1) along its length being provided with means giving different portions (5, 6 7) along the wave configuration different submerged weight and net buoyancy. The risers (2) are arranged around a centrally extending tube (3) and are surrounded by a tubular outer casing (4), the central tube (3) and the interspaces (8) between the risers (2), along different portions of the wave configuration in operation being filled with materials of different density. Thereby there is achieved at least one light portion (5) of the configuration having a desired positive net buoyancy, and a heavy portion (6 resp. 7) on each side of the light portion (5) having a desired positive submerged weight.

Abstract: System for mooring ships, in particular for operations in connection with oil and gas activity, whereby a ship is equipped with a mooring device at its bow portion. There is included an anchor device located at the seabed, as well as at least one anchoring line adapted to connect the anchor device to the mooring device on the ship. The anchor device is an essentially permanent anchor device, preferably in the form of a suction anchor, gravitation anchor or pile anchor. The anchor device is provided with a swivel device for the anchoring line. A buoyant body is attached to a middle portion of the anchoring line.

Abstract: A system for offshore production of oil or gas, comprising a surface vessel having a means for maintaining a desired position and orientation, a bottom installation at the seabed for at least two production wells, and risers for connecting the bottom installation to the vessel. The vessel is provided with drilling equipment for wells at the seabed and with process equipment for produced oil or gas. The bottom installation comprises a template having its foundation at the seabed and being provided with a manifold unit and is designed with at least two well head sections adapted for installing associated Christmas trees. A drill string is adapted to extend from the drilling equipment on the vessel to an operation module at the bottom installation, and a product riser is adapted to connect the operation module to the process equipment on the vessel.

Abstract: A method and a system for offshore production of liquefied natural gas, wherein natural gas is supplied from an underground source to a field installation for gas treatment. The gas is transferred in compressed form from the field installation to an LNG tanker. The transfer takes place via a pipeline surrounded by sea water. The compressed gas is supplied to a conversion plant which is provided on the LNG tanker and is arranged to convert at least a part of the gas to liquefied form, and the liquified gas is transferred to storage tanks on board the tanker. When the storage tanks on the LNG tanker are filled up, the pipeline is disconnected from the LNG tanker and connected to another, similar tanker. The pipeline is permanently connected to a submerged buoy which is arranged for introduction and releasable securement in a submerged downwardly open receiving space in the tanker, and which is provided with a swivel unit for transfer of gas under a high pressure.

Abstract: A method and a system for offshore production of liquefied natural gas, wherein natural gas is supplied from an underground source (4) to a subsea production plant (1). The gas is transferred under a high pressure directly from the production plant (1) to an LNG tanker (6), the transfer taking place through a pipeline (5) surrounded by sea water and causing the temperature of the high pressure gas to be lowered to a desired low temperature. This gas is supplied to a conversion plant (12) provided on the LNG tanker (16) and arranged for converting at least a part of the gas to liquid form, and the liquefied gas is transferred to storage tanks (17) on board the vessel (6).

Abstract: A buoy for use in loading or unloading of a flowable medium, especially oil, comprising an outer buoyancy member (2) arranged to be introduced and secured in a submerged downwardly open receiving space in a floating vessel, and a central member (3) which is rotatably mounted in the outer member and is intended for anchoring to the sea bed and arranged for passage of medium between a transfer line (57) which, in operation, is coupled to the lower end of the central member (3) and a tube system on the vessel. The central member (3) is provided with a lower extension body (8) having an outer peripheral portion (9) abutting on and essentially corresponding to the outer periphery of the adjacent end (10) of the outer buoyancy member (2), and having a lower portion (11) which is downwardly tapering from the outer peripheral portion (9).