发明名称 |
ROTATING CONTINUOUS FLOW SUB |
摘要 |
A method for drilling a wellbore includes drilling the wellbore by advancing the tubular string longitudinally into the wellbore; stopping drilling by holding the tubular string longitudinally stationary; adding a tubular joint or stand of joints to the tubular string while injecting drilling fluid into a side port of the tubular string, rotating the tubular string, and holding the tubular string longitudinally stationary; and resuming drilling of the wellbore after adding the joint or stand. |
申请公布号 |
CA2784593(C) |
申请公布日期 |
2015.04.14 |
申请号 |
CA20112784593 |
申请日期 |
2011.01.05 |
申请人 |
WEATHERFORD/LAMB, INC. |
发明人 |
BAILEY, THOMAS F.;MITCHELL, MARK;PAVEL, DAVID;RING, LEV;BANSAL, RAM K.;IBLINGS, DAVID |
分类号 |
E21B21/10;E21B19/16;E21B21/12 |
主分类号 |
E21B21/10 |
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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