Oil recovery process for carbonate reservoirs
US8550164B2 · kind B2 · utility
26Cited by
23References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2011 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | Aug 1, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for increasing oil production in a carbonate reservoir by incorporating a diluted surfactant injection in conjunction with conducting a step-wise reduction of salinity of the injected salt water that is injected into the carbonate reservoir. The method provides for increased oil production as compared to conventional waterflooding techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.