C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/52 (2006.01) E21B 43/22 (2006.01) A01N 37/16 (2006.01) A01N 59/00 (2006.01) A01P 1/00 (2006.01)
Patent
CA 2746736
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.
L'invention concerne des compositions de fluide aqueux de traitement de puits ayant une activité biocide. Les compositions contiennent un polymère pour modifier la viscosité du fluide dans le fluide aqueux, un peracide monocarboxylique organique antimicrobien en une quantité d'environ 1 ppm à environ 1000 ppm, et une quantité contrôlée de peroxyde d'hydrogène. L'acide peracétique est le peracide préféré. Le polymère modifiant la viscosité dans la composition de fluide aqueux de traitement de puits peut servir à réduire les frottements dans le fluide ou à augmenter la viscosité du fluide. Un procédé d'utilisation de ces compositions est également décrit.
Huang Shurong
Pfeffer Henry A.
Rovison John M. Jr.
Fmc Corporation
Smart & Biggar
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