发明授权
- 专利标题: Wicker-type face seal and wellhead system incorporating same
- 专利标题(中): 柳条式面密封和包括其的井口系统
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申请号: US12826443申请日: 2010-06-29
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公开(公告)号: US08950752B2公开(公告)日: 2015-02-10
- 发明人: Nicholas Peter Gette , Armando Faz , Stephen Ellis
- 申请人: Nicholas Peter Gette , Armando Faz , Stephen Ellis
- 申请人地址: US TX Houston
- 专利权人: Vetco Gray Inc.
- 当前专利权人: Vetco Gray Inc.
- 当前专利权人地址: US TX Houston
- 代理机构: Bracewell & Giuliani LLP
- 主分类号: E21B33/00
- IPC分类号: E21B33/00 ; E21B33/10 ; F16J15/02 ; E21B33/03 ; E21B33/04
摘要:
A wellhead seal assembly that forms a metal-to-metal seal between inner and outer wellhead members and a face seal between inner wellhead members. The face seal is created by two opposing sealing surfaces on inner wellhead members that sealingly engage each other. The inner wellhead members that interact to form a face seal may be a casing hanger, bridging hanger, or lockdown hanger. A wicker profile formed on one of the opposing seal surfaces bites into the opposing seal surface in response to a load. The face seal is designed such that well pressure enhances the face seal.