Method of controlling iron in produced oilfield waters
US5302293A · kind A · utility
16Cited by
24References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1992 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Jul 13, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F5/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a process for stabilizing iron oxides and iron hydroxides in produced oil field waters. A water soluble polymer containing pendant N-substituted amide functionality units is added at a rate of about 6 parts by weight polymer to 10 parts by weight iron in the produced water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.