发明名称 |
UNDERWATER DRILLING METHOD AND APPARATUS RELATING THERETO |
摘要 |
The method consists in boring a shaft in the sea floor to form a drilling station of sufficient size to accommodate personnel and equipment, in lining the shaft walls with a casing which is cemented against the walls and surmounted by a water-tight self-contained subsea chamber, in extracting sea water from the shaft, in maintaining atmospheric pressure within the shaft and the subsea chamber, in lowering personnel and drilling equipment into the shaft and in carrying out drilling operations from the bottom of the shaft. |
申请公布号 |
DE2964704(D1) |
申请公布日期 |
1983.03.17 |
申请号 |
DE19792964704 |
申请日期 |
1979.06.28 |
申请人 |
TECHNIQUES INDUSTRIELLES ET MINIERES (SOCIETE ANONYME FRANCAISE);VALANTIN, ALFRED |
发明人 |
VALANTIN, ALFRED |
分类号 |
E21B7/124;E21B17/02;E21B21/00;E21B33/037;(IPC1-7):E21B7/12;E21B33/03 |
主分类号 |
E21B7/124 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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