Oil-field biocide method utilizing a peracid
US9018142B2 · kind B2 · utility
25Cited by
18References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2009 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | Aug 14, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Aqueous well treatment fluid compositions with biocidal activity are disclosed comprising a polymer for modifying fluid viscosity in the aqueous fluid, an organic monocarboxylic peracid being present in an anti-microbial amount of about 1 ppm to about 1000 ppm, and a controlled amount of hydrogen peroxide also being present. Peracetic acid is the preferred peracid. The viscosity-modifying polymer in the aqueous well treatment fluid composition may serve to reduce friction in the fluid or increase fluid viscosity. A method of using such compositions is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.