Swellable polymeric materials
US7665538B2 · kind B2 · utility
18Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2006 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Dec 13, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1277
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A seal comprising a polymeric material having a first swelling phase having a first swelling characteristic and a second swelling phase having a second swelling characteristic, the first swelling characteristic is greater than the second swelling characteristic is utilized to seal an upper portion from a lower portion of a wellbore. A wellbore seal tool is further described comprising a swellable layer, a supporting assembly disposed adjacent the swellable layer, and an inflatable bladder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.