| 摘要 |
PCT No. PCT/NO80/00044 Sec. 371 Date Jul. 31, 1981 Sec. 102(e) Date Jul. 31, 1981 PCT Filed Dec. 18, 1980 PCT Pub. No. WO81/01864 PCT Pub. Date Jul. 9, 1981.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 and forming 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 (2) constituting a gas-collecting bell, and a lower member (1) constituted by the shell body. The upper member (2) comprises a shell-body-enclosing outer wall (7) and an inner wall (8) enclosed by the shell body (1), which walls (7, 8) are mutually sealingly connected at the top (9) so as to form an annular compartment (10) which is open at the bottom and in which a top part (5) of the shell body (1) projects, a bottom part (11) which, at the bottom of the inner wall (8), closes the central space (12) defined by the inner wall (8), and ballast tanks (13) for adjusting the displacement of the upper member (2) in the medium within the shell body (1).
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