Surfactant-stabilized foams for enhanced oil recovery
US5074358A · kind A · utility
17Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1990 |
| Grant date | Dec 24, 1991 |
| Priority date | — |
| Expiry date | Jul 3, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/936
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A foam is provided for use in a subterranean oil-bearing formation for reducing and controlling the mobility of a gaseous drive fluid. The foam is generated using an inert gas and a fluorocarbon surfactant solution in admixture with an amphoteric or anionic hydrocarbon surfactant solution. A relatively small amount of the fluorocarbon surfactant is operative, when mixed with the hydrocarbon surfactant and foamed, to generate a foam that has better stability when in contact with oil than a foam made with hydrocarbon surfactant alone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.