FIELD: oil and gas industry.
SUBSTANCE: invention relates to the biocides use during operation of the oil and gas wells. Method of suppression of bacterial contamination in liquid for the formation hydraulic fracturing including addition of the definite quantity of peracetic acid sufficient to suppress growth of bacteria to the liquid for the formation hydraulic fracturing including water, at least one polymer viscosifier, at least one proppant, also includes addition of at least one oxygen scavenger injected prior to the peracetic acid. Method of suppression of the bacterial contamination in the ballast water including water injection to the ballast tank of the offshore frilling rig of the definite quantity of the peracetic acid sufficient to suppress the growth of the bacteria includes addition of at least one oxygen scavenger injected prior to the peracetic acid.
EFFECT: increased method efficiency.
11 cl, 1 dwg
