Wicker-type face seal and wellhead system incorporating same
US8950752B2 · kind B2 · utility
3Cited by
12References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2010 |
| Grant date | Feb 10, 2015 |
| Priority date | — |
| Expiry date | Jan 9, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/0422
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.