Method for concentrating surfactant from a brine solution
US4676315A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 5, 1986 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Feb 5, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/936
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method is disclosed for concentrating surfactant in an aqueous solution. The method comprises adding to the solution a component incompatible with the surfactant, such as a water-soluble polymer, thereby displacing the surfactant from the aqueous phase of the solution. The component remains in the aqueous phase and the surfactant goes into a surfactant-rich phase. The surfactant-rich phase can then be separated from the aqueous phase by conventional separation devices or techniques. This method is particularly applicable to concentrating surfactant recovered from a reservoir following an enhanced oil recovery process employing surfactant. The method may be practiced in the field or off-site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.