发明名称 |
CONTINUOUS CIRCULATION DRILLING METHOD |
摘要 |
A method for drilling wells in which the tubular (5) can be added or removed from the drill string (17) whilst the drill is rotating with the mud and drilling fluids being circulated continuously and kept separated from the environment to reduce pollution. A connector is used with an inlet (15) and outlet (10) for the mud etc. and which incorporates rams (11) to seal off and separate the flow of mud as a tubular is added or removed.
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申请公布号 |
WO9816716(A1) |
申请公布日期 |
1998.04.23 |
申请号 |
WO1997GB02815 |
申请日期 |
1997.10.14 |
申请人 |
AYLING, JOHN, LAURENCE |
发明人 |
AYLING, JOHN, LAURENCE |
分类号 |
E21B3/02;E21B19/16;E21B21/00;E21B21/01;E21B33/068;(IPC1-7):E21B21/00 |
主分类号 |
E21B3/02 |
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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