Swellable compositions for borehole applications
US9771510B2 · kind B2 · utility
15Cited by
1References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2015 |
| Grant date | Sep 26, 2017 |
| Priority date | — |
| Expiry date | May 1, 2035 |
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.