Method and apparatus for collecting oil and gas from an...

Details Method and apparatus for collecting oil and gas from an... Method and apparatus for collecting oil and gas from an...

E - Fixed Constructions

21

B

166/51

E21B 43/01 (2006.01)

Patent

CA 1151539

ABSTRACT A method and an apparatus for collecting oil and gas flowing uncontrolled into a body of water beneath the water surface, especially in a blow-out from a point at the sea bed. The oil and gas discharged from the blow-out location is caught and ascends towards the surface within a tubular shell body and the gas is collected in a floating gas bell provided at the upper end portion of the shell body which bell forms a gas or liquid trap against the surrounding water in that it has an outer wall projecting downwards and surrounding an upper portion of the shell body. The gas is thus automatically placed under a controllable positive pressure in that the displacement of the gas bell in the medium within the shell body can be varied by ballast means. The apparatus includes an upper member con- stituting the gas-collecting bell, and a lower member constituted by the shell body. The upper member comprises a shell-body- enclosing outer wall and an inner wall enclosed by the shell body, which walls are mutually sealingly connected at the top thereof so as to form an annular compartment which is open at the bottom and into which a top part of the shell body projects. The inner wall has a bottom part which encloses a central space defined by the inner wall. Ballast tanks are provided for adjusting the displacement of the upper member-in the medium within the shell body.

367201

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