Abstract:
Anchoring system to hold a vessel anchored during loading or unloading, which vessel can be connected to or from the anchoring system in a similar way under all operating conditions without adjustments in the anchoring system, which anchoring system is comprising one or more anchors, from each anchor an anchor line is arranged extending upwards through the sea to a subsea buoy with swivel, which buoy has connected thereto and suspended the anchor lines and at least one pipeline for loading or unloading up through the sea, from which subsea buoy at least one line is arranged to a surface buoy, and further, at least one anchoring line and at least one pipeline for loading or unloading, arranged to the vessel either directly from the subsea buoy or via the surface buoy to the vessel, distinguished in that in each anchor line slack is arranged, and on one or more anchor lines one or more clump weights are arranged, and the buoyancy of the subsea buoy and the buoyancy of the surface buoy is adapted such that by damage on the surface buoy or the line therefrom to the subsea buoy will the subsea buoy and thereto suspended equipment not be lowered further down vertically than that one or more of the clump weights are landing on the seabed, while during loading or unloading will at least one of the clump weighs on each anchor line be located on or just above the seabed, and for all types of load in the loading and unloading pipelines and with all anchor lines connected, the subsea buoy can by ballast adjustment be brought up to the surface.
Abstract:
The invention relates to a flexible duct for a cryogenic fluid comprising, from the inside to the outside, an inner duct (10), a first insulation and sealing layer (20), a second insulation and sealing layer (30) and an outer layer (40) characterized in that the inner duct (10) is made of a at least on carcass (1), the first insulation and sealing layer (20) comprising a sub-layer (21) made of an insulation means (2) combined with a sealing means (3), said sub-layer (21) being located above and in direct contact with the carcass (1).
Abstract:
Device for connecting pipelines conducting fluid under pressure, such that relative movement is allowed between two coupling parts carrying respective coupling ends of the pipelines, with possibility for pressure testing of primary seals before operation, wherein a first of the coupling parts is comprising a central core (1) provided with a bore (60) in longitudinal direction and a radial passage (61) with fluid connection to the longitudinal bore (60), which radial passage (61) has fluid connection with a ring formed passage (62) formed in a second ring formed coupling part (2) that is movable relative to the first coupling part, where facing axial surfaces (surfaces substantially normal to the longitudinal axis) between the second connection part and both the first connection part and an additional part comprising dynamic hydraulic test seals (20, 21), dynamic hydraulic primary seals (22, 23) and dynamic hydraulic secondary seals (24, 25), have constant sealing gap for the dynamic seals (20, 21, 22, 23, 24, 25) independent of the fluid pressure in the passage (62) in the second coupling part, distinguished in that the device is comprising a relative to the first coupling part stationary bearing ring (3), arranged over the second coupling part and equipped with axial pretensioning against the second coupling part with at least one spring and having construction allowing supply of a compensator fluid to a compensator gap that in substance is arranged parallel with the sealing planes and with the bearing ring between the compensator gap and the sealing planes, such that a constant sealing gap can be provided with pretensioning and compensator fluid for all fluid pressures.
Abstract:
A deep-water vertical offshore riser between a subsurface or surface buoy and the sea bed, the riser thereby comprising a plurality of riser sections, each section comprising an upper connection (7) containing buoyancy means and an lower connection (6) containing means for connection a riser to the upper connection (7) of a section below, the connection operation thereby being carried out and controlled by a remote control vehicle (ROV), and each individual section (1) being towable at the surface, the uppermost section comprising a subsurface buoy (11) at the upper end.
Abstract:
L'invention concerne un ensemble de raccordement d'une une conduite flexible (20) à une installation sous-marine (18). Ladite conduite étant destinée à être étendue entre ladite installation sous-marine (18) et une installation de surface (16). Ladite conduite flexible (20) présente d'une part une extrémité de surface (22) et une extrémité de fond (28), et d'autre part une portion de contact (26) et une portion flottante (24) qui s'étend entre ladite portion de contact (26) et ladite extrémité de surface (22). Ladite portion de contact (26) comprend une partie coudée (40) divisant ladite portion de contact (26) en une première partie (36) et une seconde partie; ladite partie coudée (40) est amarrée sur le fond (10) à un point d'ancrage (42) opposé à la fois à ladite extrémité de fond (28) et à ladite portion flottante (24).
Abstract:
Subsea connector for subsea coupling of a mooringline, distinguished in that the connector comprises a male connector part (1), a female connector part (2) , and at least one locking collar (3).
Abstract:
Flexible riser, comprising a length of a flexible pipe with an upper end, a bend restrictor and a termination for hanging up on a vessel, a floating installation or a platform, distinguished in that the bend restrictor in the upper end is connected to an adapter pipe extending from a lower end at the bend restrictor to an upper end, to an end coupling to which the upper ends of both the flexible pipe and the adapter pipe are fastened, the flexible riser extending through the bend restrictor and the adapter pipe and the end connection comprising a means for hanging up at deck level of the vessel, the installation or the platform. Method for pulling-in and hanging up of the flexible riser.
Abstract:
Arrangement for mooring, loading and unloading of a vessel, comprising: a stationary inner tower with a lower end fixedly anchored to the seabed, from where the inner tower extends upwards through the sea to an upper end over the sea level, which inner tower at level close to the seabed has through connections for hoses and cables for transfer of load and signals, which hoses and cables are brought further up through the inner tower and out of its upper end; a yoke that in one end is rotatably fastened to the inner tower, wherefrom the yoke extends further outwards to at least one outer ballastable end wherefrom moorings are arranged to keep the vessel anchored, on which vessel devices are provided to connect the vessel with the moorings and said hoses and cables for transfer of load and signals. The mooring arrangement is distinguished in that it further is comprising an outer tower with rotatable fastening to the inner tower, which outer tower from the fastening to the inner tower extends upwards outside the inner tower to a level over the upper end of the inner tower, wherein the rotatable fastening is placed below sea level and also is comprising the fastening of the yoke, such that the outer tower and the yoke as one unit is freely rotatable over and around the inner tower that is stationary anchored to the seabed; and a swivel provided between the upper end of the inner tower and the upper end of the outer tower, for rotatable transfer of load and signals with said hoses and cables between the inner and the outer tower and therefrom further to the vessel.
Abstract:
Turret for connection of a buoy (1) to a vessel, where the buoy (2) has a shape substantially like a circular cylinder and being adapted to be connected with a vertically arranged sleeve (2) in the vessel and to be locked to the sleeve (2) by means of locking devices (3) and that the sleeve (2) is rotatably supported in bearings (4) arranged in the vessel, and that lines (5) for transfer of media etc. between the vessel and the seabed, extend centrically through the buoy (1).
Abstract:
A device for rotating turntable comprises a turret (5) and a turntable bearing (6, 7) for a drilling or production vessel (1) for recovery of oil offshore, the turret (5) is rotatable in a through-going opening or well (8) in the hull of the vessel and having axial and radial bearing assemblies arranged in a polar array about the turret centre line. In order to reduce the substantial wear caused by relative movements between the axial wheels (12) of the bearing assembly, including axial wheel shafts (15), and the circular rail (11) on the bearing support structure (7), the axial wheels (12) are conically shaped with a double curved surface rolling on the upward facing edge of the circular rail (11) with a slope aligned with an extension line (24) of the rail (11) substantially intersecting with the shaft centre line (34) at the centre line (35) of the turret (5). The radial bearing assembly includes horizontally arranged radial wheels (13) with double curved surface. Each wheel (13) is rolling on an inward facing edge of the circular rail (11).