FIELD: oil and gas production and corrosion protection. SUBSTANCE: composition contains, wt.%: 1,3- oxazolidine-based bactericide, 0.05-0.06; corrosion inhibitor based of condensation product of polyethylenamines with tall oil fatty acids or with high-boiling fractions of synthetic fatty acids, 0.04-0.06; polymeric thickening agent, 0.06-0.07; and water, the balance. EFFECT: prolonged corrosion-protection effect and reduced corrosion of underground equipment. 3 ex
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