Methods and compositions for breaking viscosified fluids
US5950731A · kind A · utility
30Cited by
12References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1997 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | Nov 5, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/922
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to methods of treating subterranean formations and viscosified aqueous well treating compositions which break into thin fluids at temperatures in the range of from about 100.degree. F., to about 300.degree. F. A breaker system is included in the compositions comprised of an alkali metal chlorite or hypochlorite breaker and a breaker activator comprised of copper II ion or an amine, or both.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.