Method for improved oil recovery
US4706749A · kind A · utility
35Cited by
28References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1984 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Nov 6, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A non-thermal, chemical "huff and puff" method for improved oil recovery is provided in which surfactant/cosurfactant/brine mixtures are used to recover viscous and other hydrocarbons from single wells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.