Oil-field viscosity breaker method utilizing a peracid
US8575075B2 · kind B2 · utility
10Cited by
49References
8Claims
0Family size
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Key dates
| Filing date | Feb 22, 2010 |
| Grant date | Nov 5, 2013 |
| Priority date | — |
| Expiry date | Oct 17, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/26
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Aqueous well treatment fluid compositions are disclosed comprising an aqueous fluid containing polymer or copolymer for modifying fluid viscosity of the aqueous fluid and, in addition, an agent for effecting a controlled reduction in the aqueous fluid viscosity in a subterranean environment. The viscosity-reducing agent comprises a dilute concentration of peracetic acid. A method of using such compositions in oil- and gas-field treatment operations is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.