Retention mechanism for subterranean seals experiencing differential pressure
US8439082B2 · kind B2 · utility
3Cited by
13References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2010 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Jun 21, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1208
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A mandrel is formed with a projection, depression or a surface irregularity to retain the seal material sealing a passage in the mandrel or an annular space around it against differential pressure. The material can be a shape memory or swelling material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.