发明名称 |
Bi-directional annulus seal |
摘要 |
A wellhead seal assembly forms a metal-to-metal seal between inner and outer wellhead members. A metal seal ring has inner and outer walls separated by a slot. A lock ring has grooves for locking the inner wellhead member to the outer wellhead member during installation. An energizing ring has a C-ring captured on its inner surface. When the energizing ring is moved further into the slot, the C-ring is forced from its pocket and engages the surface of the inner wellhead member, locking the seal assembly to the inner wellhead member. |
申请公布号 |
US8146670(B2) |
申请公布日期 |
2012.04.03 |
申请号 |
US20090465966 |
申请日期 |
2009.05.14 |
申请人 |
ELLIS STEVEN C.;GARCIA, JR. JAVIER;HUNTER RICK C.;NELSON JOHN E.;VETCO GRAY INC. |
发明人 |
ELLIS STEVEN C.;GARCIA, JR. JAVIER;HUNTER RICK C.;NELSON JOHN E. |
分类号 |
E21B33/047;E21B33/03 |
主分类号 |
E21B33/047 |
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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