发明名称 |
Remote operated actuator system for drill string internal blowout preventer |
摘要 |
An air swivel ring includes a non-rotating member having an air inlet, a rotating member having an air outlet, and a split seal having a first sealing surface and coupled to one of the non-rotating member and the rotating member so that the first sealing surface on the seal is disposed proximate a second sealing surface on the other of the non-rotating member and the rotating member.
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申请公布号 |
US7137453(B2) |
申请公布日期 |
2006.11.21 |
申请号 |
US20040818607 |
申请日期 |
2004.04.06 |
申请人 |
HYDRIL COMPANY L.P. |
发明人 |
GUSTAFSON RYAN;BOWEN JONATHAN |
分类号 |
E21B19/16;E21B19/00;E21B21/10;E21B33/06 |
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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