Oil recovery method employing acids extracted from crudes using a ion-exchange process
US4037656A · kind A · utility
9Cited by
9References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 21, 1976 |
| Grant date | Jul 26, 1977 |
| Priority date | — |
| Expiry date | May 21, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/584
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This specification is directed to a method of producing oil from an oil-containing subterranean formation by a caustic waterflood. Oil containing carboxylic acids is passed through an ion-exchange resin to selectively remove the carboxylic acids therefrom. The removed carboxylic acids are injected into the formation in conjunction with the caustic waterflood to enhance the production of oil from the formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.