Oil recovery by increasing the injectivity index of micellar systems containing crude oil sulfonates
US4147637A · kind A · utility
0Cited by
4References
7Claims
0Family size
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Key dates
| Filing date | Sep 2, 1977 |
| Grant date | Apr 3, 1979 |
| Priority date | — |
| Expiry date | Sep 2, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/938
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Flooding hydrocarbon-bearing, subterranean formations with micellar systems containing crude oil sulfonates is improved by extracting wax from the micellar system before it is injected into the formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.