发明名称 |
METHODS AND SYSTEMS FOR PERFORMANCE OF SUBTERRANEAN OPERATIONS USING DUAL STRING PIPES |
摘要 |
<p>Methods and systems for improving delivery and retrieval of fluids to and from a downhole location are disclosed. A dual string pipe (202) is provided which comprises an outer pipe (206), an inner pipe (204) positioned within the outer pipe, and a bottom hole assembly (210) fluidically coupled to the outer pipe and the inner pipe. A diverter sub (208) is coupled to the inner pipe and is selectively operable in a normal drilling mode and a high flow mode. In the normal drilling mode a fluid is directed downhole through the inner pipe and in the high flow mode a return fluid is directed uphole through the inner pipe.</p> |
申请公布号 |
CA2873712(A1) |
申请公布日期 |
2013.12.12 |
申请号 |
CA20122873712 |
申请日期 |
2012.06.05 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
STRACHAN, MICHAEL JOHN MCLEOD |
分类号 |
E21B21/12 |
主分类号 |
E21B21/12 |
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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