Swellable packer
US9243473B2 · kind B2 · utility
7Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2012 |
| Grant date | Jan 26, 2016 |
| Priority date | — |
| Expiry date | Mar 27, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/127
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A packer that is usable with a well includes a tubular inner core and a swellable body that is mounted to the core and is adapted to swell in the presence of a triggering agent to form an annular seal in the well. The swellable body longitudinally extends between first and second ends of the body and includes a first region that is located between the first and second ends of the swellable body to swell at a first rate and at least a second region that is located closer to one of the first and second ends than the first region to swell at a second rate less than the first rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.