发明名称 |
MINERAL EXTRACTION SYSTEM HAVING MULTI-BARRIER LOCK SCREW |
摘要 |
A dual barrier lock screw for a wellhead assembly is provided that includes a first seal disposed at a first axial location along the body of the screw and a second seal disposed at a second axial location along the body of the screw, wherein the first and second axial locations are different from one another. The screw may also include a passage extending axially through the body of the screw and coupled to a port at the end of the screw. The port is configured to receive external pressure and allow testing of the dual barrier seals of the lock screws. A system that includes the lock screw and methods of operating and testing the lock screw are also provided.
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申请公布号 |
CA2726335(A1) |
申请公布日期 |
2009.12.23 |
申请号 |
CA20092726335 |
申请日期 |
2009.05.12 |
申请人 |
CAMERON INTERNATIONAL CORPORATION |
发明人 |
GUIDRY, KIRK P. |
分类号 |
E21B33/03;E21B33/038;E21B33/04 |
主分类号 |
E21B33/03 |
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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