发明名称 |
DRILLING ON WATER AND ICE WITH A MOVABLE VESSEL |
摘要 |
Drilling operations are conducted on water and ice with a movable vessel which moves on shore as water freeze-up approaches and then moves back onto the ice after freeze-up to resume drilling operations, the well location being located by a signal and connection being established between the vessel and the well through the ice.
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申请公布号 |
US3664437(A) |
申请公布日期 |
1972.05.23 |
申请号 |
USD3664437 |
申请日期 |
1970.01.23 |
申请人 |
ESSO PRODUCTION RESEARCH CO. |
发明人 |
THOMAS B. MCCULLOCH |
分类号 |
E21B7/00;E21B15/02;(IPC1-7):E21B7/12 |
主分类号 |
E21B7/00 |
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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