Hydraulic and earth engineering – Marine structure or fabrication thereof – With anchoring of structure to marine floor
Patent
1997-09-30
2000-01-11
Bagnell, David
Hydraulic and earth engineering
Marine structure or fabrication thereof
With anchoring of structure to marine floor
4052231, 405208, 405207, 114264, E02D 554, B63B 3544
Patent
active
060128739
ABSTRACT:
A deep water platform, suitable for use as a hydrocarbon exploration or production facility in very deep offshore waters, and a method of constructing the same are shown. The platform is positioned on top of a buoyant leg structure. During normal drilling operations the platform is anchored by a gravity base tethered with pre-tensioned cables to the buoyant leg structure. According to the invention, the gravity base is retractable to permit the platform to be moved from site to site within a drilling region. Long distance relocation is also possible by retracting the gravity base, disassembling the platform, transporting the component parts, and reassembling the rig in a new location.
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Capanoglu Cuneyt C.
Copple Robert W.
Bagnell David
Brothers Coudert
Lee Jong-Suk
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