Truss semi-submersible offshore floating structure

Details Truss semi-submersible offshore floating structure Truss semi-submersible offshore floating structure

2011-01-18

2011-01-18

Bagnell, David J (Department: 3672)

Hydraulic and earth engineering

Marine structure or fabrication thereof

With work deck vertically adjustable relative to floor

C405S204000, C405S205000, C114S264000, C114S265000

Reexamination Certificate

active

07871222

ABSTRACT:
A semi-submersible structure. The hull includes four columns that are supported by two pontoons. The columns support the topsides and the topsides structural framing serves as horizontal framing between the columns. A truss frame is attached to the columns. The truss frame preferably includes heave plates. The truss frame extends downward below the pontoons a sufficient distance in the water such that it minimizes motions caused by environmental forces. The hull section and the truss space frame are constructed separately and assembled together at the offshore site where the structure is used for drilling and/or production.

REFERENCES:
patent: 6340272 (2002-01-01), Runge et al.
patent: 6666624 (2003-12-01), Wetch
patent: 6761124 (2004-07-01), Srinivasan
patent: 6884003 (2005-04-01), Horton, III

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