Swellable compositions for borehole applications
US8993491B2 · kind B2 · utility
17Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2009 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Jul 27, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2103/0049
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compositions that swell on contact with water contain a non-swellable thermoplastic or thermoset polymer and a swellable inorganic compound. In particular, the compositions are suitable for use in subterranean wells such as those used in the oil and gas industry. The polymer may be polypropylene and the inorganic compound may be magnesium oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.