Well packer valve seal assembly
US4146092A · kind A · utility
4Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1978 |
| Grant date | Mar 27, 1979 |
| Priority date | — |
| Expiry date | Jun 7, 1998 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1294
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A seal assembly for a valve in a mechanical setting retrievable and pressure balanced packer has a valve seal mounted on a bushing mounted around a mandrel joined to an anchor and enclosed within a balance chamber housing. The valve seal is retained between the bushing and an overlapping coaxial face seal retainer such that only a relatively small portion of the face seal ring will contact the seal surface of a valve seat on the packer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.