PERACETIC ACID OIL-FIELD BIOCIDE AND METHOD

摘要

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.

主权项

1. An aqueous well treatment fluid composition with biocidal activity comprising
a polymer or copolymer for modifying fluid viscosity; an organic monocarboxylic peracid in an antimicrobial amount of about 1 ppm to about 1000 ppm; and hydrogen peroxide, the hydrogen peroxide concentration being less than the peracid concentration; in an aqueous medium.