Deep draft semi-submersible LNG floating production, storage...

Details Deep draft semi-submersible LNG floating production, storage... Deep draft semi-submersible LNG floating production, storage...

2011-07-19

2011-07-19

Olson, Lars A (Department: 3617)

Ships

Floating or semi-submersible storage vessel

C114S264000

Reexamination Certificate

active

07980190

ABSTRACT:
The present disclosure provides a method, apparatus, and system of a deep-draft semi-submersible hydrocarbon, such as for liquefied natural gas (LNG), floating production and storage vessel that can include a pontoon containing hydrocarbon tanks, fixed ballast at the bottom in a double-bottom portion, and segregated ballasted tanks with variable ballast located generally above the fixed ballast portion that can assist in keeping the pontoon submerged during various storage levels. Multiple vertical columnar supports can penetrate the pontoon from top to bottom and extend above the water surface to support a deck, including various topside structures. An intermediate double-deck on the top of the pontoon can provide access to the tanks, for example, through the vertical columnar supports. The double bottom structure, deck, and vertical columnar supports can provide overall structural integrity.

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R. Blazquez Lainez, Written Opinion for International Patent Application No. PCT/US/2008/087700, European Patent Office, dated Jul. 29, 2010.

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