Method for treating oil-water emulsions and recovering surfactants
US4589998A · kind A · utility
2Cited by
1References
42Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 1983 |
| Grant date | May 20, 1986 |
| Priority date | — |
| Expiry date | Sep 6, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D17/047
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
To improve the separation of a produced oil-water emulsion containing a surfactant, the emulsion parameters of temperature and salinity are brought within certain critical limits. The emulsion will separate into an injectable brine/surfactant phase and a pipeline quality crude oil phase. The operable salinity range is from about 70% to about 130% of the reservoir salinity, and the operable temperature range is from about 75.degree. F. lower to about 75.degree. F. higher than the temperature of the reservoir from which the emulsion was produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.