Metal annulus seal
US7762319B2 · kind B2 · utility
24Cited by
9References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 11, 2008 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | Nov 11, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/01
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
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. An energizing ring has a C-ring captured on its outer surface. When the energizing ring is moved further into the slot, the C-ring is forced from its pocket and engages a profile on the seal ring, locking the energizing ring to the seal assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.