Preventing plugging by insoluble salts in a hydrocarbon-bearing formation and associated production wells
US4723603A · kind A · utility
95Cited by
2References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 3, 1987 |
| Grant date | Feb 9, 1988 |
| Priority date | — |
| Expiry date | Feb 3, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/528
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Plugging in fluid passageways of a subterranean hydrocarbon-bearing formation or associated production wells caused by the accumulation of insoluble salt precipitates therein which results from an in situ interaction between precipitate precursor ions in an injection water and resident ions already occurring in the formation is prevented by removing the precursor ions from the injection water by a reverse osmosis membrane before injecting the water into the formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.