Low molecular weight amines and amine quaternaries for the removal of soluble organics in oil field produced water
US5354477A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 7, 1992 |
| Grant date | Oct 11, 1994 |
| Priority date | — |
| Expiry date | Apr 7, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D17/047
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method is set forth for the treatment of mixed oil and water flowing from a producing oil well. Certain salts may be formed by the mixture some of which will be soluble organic salts. The present process sets forth a method of treating the produced stream with low molecular weight amines and preferably amine quaternaries with strong acids so that the oil based salts are removed from the water phase and left with the oil for segregation, thereby permitting disposal of the produced water without creating a sheen on the produced water. Subsequent waste water treatment is avoided to remove traces of oil on the produced but separated water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.