Co-surfactant foam-forming composition for enhanced oil recovery
US10717921B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Apr 28, 2016 |
| Grant date | Jul 21, 2020 |
| Priority date | — |
| Expiry date | Apr 28, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention includes a foam-forming composition for use in enhanced oil recovery, and a method of using said foam-forming composition for recovering oil. The foam-forming composition of the present invention comprises a nonionic surfactant, in particular an alcohol-alkoxylate, and an anionic surfactant, in particular an alkyl diphenyloxide (di)sulfonate, where the foam-forming composition promotes a formation of a stable foam formed of a CO2 and water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.