Method and apparatus for supporting a drilling platform on...

Details Method and apparatus for supporting a drilling platform on... Method and apparatus for supporting a drilling platform on...

E - Fixed Constructions

02

B

61/6, 61/12.1

E02B 17/00 (2006.01) E02B 17/02 (2006.01)

Patent

CA 1039521

Abstract A method and apparatus for positioning and supporting a drilling platform on the ocean floor in which the drilling platform is a monopod structure with a broad flat base. The ocean floor is dredged to form a large level area depressed below the mudline. A precast drilling cellar having a flat bottom wall and upstanding side walls extending around the perimeter of the bottom wall is lowered to the leveled area. Hydraulic jets in the bottom of the cellar displace material from beneath the cellar, allowing the cellar to sink to the ocean floor to the depth of the sidewalls. The platform is centered over the cellar with the base resting on the top of the sidewalls.

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