Water-soluble polymers for oil recovery
US8871692B2 · kind B2 · utility
8Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2011 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Jan 26, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention refers to the use of anionic water-soluble polymers being partially or totally neutralized with an organic counter-ion for oil filed application, especially tertiary oil recovery steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.