Method and composition for oil recovery by gas flooding
US4676316A · kind A · utility
22Cited by
14References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 15, 1985 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Nov 15, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/164
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method and composition for improved enhanced oil recovery of oil from a subterranean hydrocarbon-bearing reservoir by effecting simultaneous mobility and profile control in gas flooding which includes pre-injecting into the reservoir an aqueous solution of a water-soluble polymer in combination with a stable surfactant, followed by injecting a gas into the reservoir under pressure sufficient to effect oil production while recovering oil at a producing well of said reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.