Oxidative systems for breaking polymer viscosified fluids
US7712535B2 · kind B2 · utility
48Cited by
140References
56Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 31, 2006 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Jan 29, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A fluid breaking composition which includes an effective amount of an alkali chlorite and/or hyperchlorite, where the composition reduces a viscosity of a polymer viscosified fluid to a desired low value at down hole conditions within a time period coincident with a formation stimulation time, generally between about 30 minutes and 195 minutes and to methods for making and using the breaking composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.