FIELD: oil and gas industry.
SUBSTANCE: group of inventions relates to oil and gas industry. Process liquid for liquidation (long-term suspension) of oil and gas wells in the first variant includes, wt %: sodium formate – 16.0–50.3; activator of heat-resistant acid corrosion inhibitor WHT-8213 – 0.01–0.1; water – the rest. Process liquid for liquidation (long-term suspension) of oil and gas wells in the second variant includes, wt %: potassium formate 19.0–70.0; cesium formate 5.0–60.0; activator of heat-resistant acid corrosion inhibitor WHT-8213 – 0.6–1.3; water – the rest.
EFFECT: technical result is the reduction of the corrosive activity of process fluid and toxicity.
2 cl, 1 dwg, 5 ex
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