Method and apparatus for erecting a marine structure

Details Method and apparatus for erecting a marine structure Method and apparatus for erecting a marine structure

1994-07-15

1996-09-24

Bagnell, David J.

Hydraulic and earth engineering

Marine structure or fabrication thereof

Floatable to site and supported by marine floor

114259, 4141396, 405209, E02D 2500, B63B 3544

Patent

active

055584683

ABSTRACT:
The deck or superstructure for an offshore production platform is shifted from a loading facility onto a cargo vessel that includes a large-area lifting assembly. The vessel transports the superstructure to a previously-installed substructure. On site, the elevator assembly raises the superstructure above the top of the substructure jacket, aligns the superstructure with the substructure and then mates the two together by lowering the elevator assembly. The elevator assembly is designed to break away very rapidly from the superstructure to compensate for vessel rebound when the mass of the superstructure is accepted by the substructure.

REFERENCES:
patent: H488 (1988-07-01), Rowan
patent: 4252469 (1981-02-01), Blight et al.
patent: 4729695 (1988-03-01), Silvestri
patent: 4826355 (1989-05-01), Marion
patent: 4930938 (1990-06-01), Rawstrum et al.

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