Oil recovery method utilizing a dialkyl phenol polyethoxy alkyl sulfonate as a solubilizing co-surfactant
US4220204A · kind A · utility
6Cited by
11References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1979 |
| Grant date | Sep 2, 1980 |
| Priority date | — |
| Expiry date | Apr 18, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/936
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The dialkylbenzene polyethoxy alkyl sulfonate is combined with a water soluble petroleum sulfonate surfactant to form an effective surfactant solution that is stable in high salinity environments. The surfactant solution is injected into an underground petroleum reservoir in order to recover crude oil therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.