Surfactant mixtures for enhanced oil recovery
US12391866B2 · kind B2 · utility
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25References
21Claims
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Key dates
| Filing date | Jul 11, 2023 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Jul 11, 2043 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A system and a method for making and using an enhanced oil recovery (EOR) fluid. The EOR fluid includes a base fluid, an anionic-nonionic surfactant including one of sodium alkylphenol ethoxylate carboxylate (APEC), sodium alkyl ethoxylate carboxylate (AEC), sodium alkylphenol ethoxylate sulfate (APES), or sodium alkyl ethoxylate sulfate (AES), and a second surfactant including a cationic surfactant including an alkyl pyridine salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.