Micellar slug for oil recovery
US4549607A · kind A · utility
19Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1983 |
| Grant date | Oct 29, 1985 |
| Priority date | — |
| Expiry date | Jul 18, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/938
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A micellar slug for use in the recovery of oil, the slug containing a hydrocarbon, an aqueous medium, a surfactant, and a cosurfactant. The surfactant contains as an essential component (a) an internal olefin sulfonate or sulfonates having 10 to 30 carbon atoms and (b) an alpha-olefin sulfonate or sulfonates having 10 to 30 carbon atoms. This micellar slug has a sufficiently low interfacial tension, good salinity tolerance, hard-water resistance, ability to maintain the micro-emulsion against change in the composition of the micro-emulsion, and mobility controlled viscosity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.