Oil displacement enhanced by lyotropic liquid crystals in highly saline media
US4434062A · kind A · utility
14Cited by
3References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 2, 1981 |
| Grant date | Feb 28, 1984 |
| Priority date | — |
| Expiry date | Jan 2, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/938
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Liquid crystals are used in place of microemulsions in a process for chemically enhanced oil recovery. The liquid crystals compositions contain ethoxylated surfactants having appropriately balanced hydrophilic-lipophilic properties. These compositions result in a faster and greater recovery of crude oil as compared to microemulsions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.