发明名称 |
Wellhead tree pressure compensating device |
摘要 |
A pressure mitigating device is used to reduce pressure in a void within a wellhead housing. In one embodiment, the pressure mitigating device includes two plates that define a void between them. Increased pressure in the wellhead housing causes the plates to elastically displace towards each other. The plates contact each other, limiting the displacement prior to plastic deformation. |
申请公布号 |
US8695712(B2) |
申请公布日期 |
2014.04.15 |
申请号 |
US20100980994 |
申请日期 |
2010.12.29 |
申请人 |
URQUHART ALEXANDER;MUNRO WILLIAM D.;VETCO GRAY INC. |
发明人 |
URQUHART ALEXANDER;MUNRO WILLIAM D. |
分类号 |
E21B33/035;E21B23/04;E21B33/043;E21B33/134;E21B34/04 |
主分类号 |
E21B33/035 |
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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