Insoluble salt control system and method
US6196314A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 15, 1999 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Feb 15, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/528
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a system and method for enhancing hydrocarbon production from a subsurface hydrocarbon-bearing formation. The system includes a mechanical fluid treatment unit that substantially reduces the concentration of precursor ions from the injection water. The treated water is injected under pressure into an injection well to cause the hydrocarbons to flow toward a production well. A chemical unit injects selected amounts of additives into the injection well to inhibit in-situ growth of crystals from insoluble salt precipitates formed due to the interaction of precursor ions present in the injected water and ions residents in the reservoir. The selected chemicals and their respective amounts are determined at least partially based on reservoir characteristics and the concentration of precursor ions in the treated water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.