发明名称 |
STRAIGHT-BORE BACK PRESSURE VALVE |
摘要 |
A system in some embodiments includes a back pressure valve. The back pressure valve includes a body, a plunger (50) disposed internal to the body, and a friction member (44) disposed about the exterior of the body. The friction member is configured to expand radially to contact an internal surface of a bore. In some embodiments, a method includes disposing a back pressure valve into a straight bore and expanding a friction member of the back pressure valve radially into contact with an internal surface of the straight bore. |
申请公布号 |
CA2720623(A1) |
申请公布日期 |
2009.10.15 |
申请号 |
CA20092720623 |
申请日期 |
2009.03.19 |
申请人 |
CAMERON INTERNATIONAL CORPORATION |
发明人 |
NGUYEN, DENNIS P.;CONTRERAS, MARIA R. |
分类号 |
E21B23/01;E21B23/04;E21B23/06;E21B33/128;E21B33/129 |
主分类号 |
E21B23/01 |
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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