Two phase mud flow usage with dual-string drilling system |
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| 申请号 | US14765487 | 申请日 | 2013-02-06 | 公开(公告)号 | US09988865B2 | 公开(公告)日 | 2018-06-05 |
| 申请人 | Halliburton Energy Services, Inc.; | 发明人 | Arthur G. Mansell; Richard Thomas Hay; | ||||
| 摘要 | Systems and methods for controlling fluid contact with a borehole wall during drilling operations include introducing an outer pipe into a borehole and positioning an inner pipe within the outer pipe, wherein the inner pipe may be axially disposed within the outer pipe. The annular isolator may be disposed within an annulus between the outer pipe and the borehole wall. The method may include placing a control fluid in the annulus between the outer pipe and the borehole wall. The method may further include circulating a drilling fluid to a drill bit using the inner pipe and the annulus between the inner pipe and the outer pipe. The drilling fluid may be separated from the control fluid by an annular isolator. | ||||||
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| 说明书全文 | |||||||
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