Downhole seal
US8727027B2 · kind B2 · utility
2Cited by
2References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2009 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Jul 16, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1208
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An expandable downhole seal includes a sealing portion and a deflecting portion adapted to move axially relative to each other to effect radial displacement of the sealing portion, wherein at least one of the sealing portion and the deflecting portion includes a swelling material. In use, radial expansion of the downhole seal may be achieved by the radial displacement of the sealing portion in combination with swelling of the swellable material. A support member is provided to support the sealing portion and deflecting portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.