Method for subterranean petroleum recovery using a surfactant blend
US10370584B2 · kind B2 · utility
2Cited by
8References
8Claims
0Family size
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Key dates
| Filing date | Sep 17, 2015 |
| Grant date | Aug 6, 2019 |
| Priority date | — |
| Expiry date | Sep 17, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Recover petroleum from a subterranean formulation by injecting an aqueous solution comprising a polyethylene oxide nonionic surfactants and a disulfonated anionic surfactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.