Inhibition of reservoir scale
US4860829A · kind A · utility
29Cited by
12References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1988 |
| Grant date | Aug 29, 1989 |
| Priority date | — |
| Expiry date | Nov 21, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/927
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Scaling of a production well in a non-carbonate subterranean reservoir is inhibited by injecting into the reservoir a mixture of a phosphonate inhibitor and a metal chelate where the metal chelate has a lower stability constant (Ke) than the phosphonate inhibitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.