摘要:
A petroleum well intervention winch system includes a high pressure confining housing for a drum for a rope to a tool string. The pressure confining housing has a connector with an aperture for the rope to a top of a tool string gate chamber on vertical bore BOP valves on a wellhead on the petroleum well. The rope runs through the aperture via a capstan to the drum. The capstan is driven by a first motor through a first high pressure proof magnetic coupling across a wall of the housing. The drum is driven by a second motor through a second high pressure proof magnetic coupling across the wall of the housing. The capstan is subject to a load tension from the rope and is provided with a hold tension on the rope from the drum. The second motor exerts a constant hold tension on the rope via the drum.
摘要:
The invention relates in improvement in or relating to a stand-by service structure for casual off-shore attendance. The service structure comprises an emergent articulated column pivotally connected with its submerged bottom end to a base member resting on the sea-bed. Said column is fitted with a base member module such as a base member with a workshop caisson comprising at least one opening giving access to the sea-bed and adapted to be closed in fluid-tight relationship. Furthermore, said workshop caisson is adapted to directly communicate at least temporarily with the outer atmosphere at the water surface.
摘要:
A capsule for enclosing a sub-sea installation part is intended to be left water-filled and thus means for sensing oil or gas leaks from the part is disposed in the upper part of the capsule to where such leakage will float.
摘要:
A tension leg marine structure or working platform is floatably positioned above an offshore working site, being maintained in place by a plurality of tension cables that connect to anchors at the sea floor. A riser which extends between the structure and the sea floor is laterally supported by a hydraulic tensioning system adapted to be adjusted in conformance with the platform's and the riser's movement.
摘要:
A petroleum well intervention winch system includes a high pressure confining housing for a drum for a rope to a tool string. The pressure confining housing has a connector with an aperture for the rope to a top of a tool string gate chamber on vertical bore BOP valves on a wellhead on the petroleum well. The rope runs through the aperture via a capstan to the drum. The capstan is driven by a first motor through a first high pressure proof magnetic coupling across a wall of the housing. The drum is driven by a second motor through a second high pressure proof magnetic coupling across the wall of the housing. The capstan is subject to a load tension from the rope and is provided with a hold tension on the rope from the drum. The second motor exerts a constant hold tension on the rope via the drum.
摘要:
A seabed positioned subsea installation comprise processing equipment. The subsea installation is provided with at least one guide way and at least one manipulator device. The base of the manipulator device is movably attached to the at least one guide way, and the subsea installation further comprises a frame extending over the processing equipment.
摘要:
A dual-BOP or multi-BOP self-standing riser configuration is disclosed, including at least a riser or another similarly fixed tubular structure disposed in communication with an associated drilling vessel and a subsurface well. The system supplements the traditional mud-line level BOP with one or more additional near-surface BOPs, which are tensioned using an adjustable buoyancy chamber rather than by means of a vessel-born tensioning device.
摘要:
A submergible, underwater well completion habitat and a method of employing the same in the completion of wells at extended depths. The well completion habitat may be attached to an underwater well platform and maintained at a pressure of sufficient value to expel water from the work chamber and also to maintain it substantially water free so that one or more saturated divers may work within the chamber to complete the well. This abstract of the invention is neither intended to define the scope of the invention, which, of course, is measured by the claims, nor is it intended to limit the invention in any way.