发明名称 |
ROTATING CONTROL DEVICE WITH POSITIVE DRIVE GRIPPING DEVICE |
摘要 |
A rotating control device can include a rotatably mounted seal which sealingly engages a drill string, and a gripping device which grips the drill string and thereby forces the seal to rotate with the drill string. A drilling method can include positioning a drill string in a rotating control device, gripping the drill string with a gripping device of the rotating control device, and rotating the drill string, gripping engagement between the gripping device and the drill string causing a seal of the rotating control device to rotate along with the drill string. A well system can include a drill string, and a rotating control device including a seal which sealingly engages the drill string and a gripping device which grippingly engages the drill string. |
申请公布号 |
EP2694771(B1) |
申请公布日期 |
2016.05.11 |
申请号 |
EP20110863051 |
申请日期 |
2011.04.06 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
CURTIS, FREDRICK, D.;ALLEY, SEAN, A. |
分类号 |
E21B19/16;E21B33/08 |
主分类号 |
E21B19/16 |
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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