FIELD: oil and gas production.
SUBSTANCE: invention refers to completion and repair of oil and gas wells under conditions of abnormal high reservoir pressure and high temperature. Composition for preparing process liquid for completion and repair of oil and gas wells contains salts of zinc and calcium including calcium chloride and corrosion inhibitor of amine type. As salt of zinc and calcium the composition contains zinc chloride and calcium nitrate, additionally it contains zinc oxide or zinc acetate at the following ratio of components, wt %: zinc chloride 15.3-54.4, calcium chloride 22.2-42.0, calcium nitrate 22.2-42.0, zinc oxide or zinc acetate 0.3-0.5, and inhibitor of corrosion of amine type 0.4-0.7. The composition can additionally contain reagent - oil wetting agent IBB-1 at weight of 0.1-0.2% from weight of composition.
EFFECT: convenient transporting of composition, low cost of liquid prepared out of it and reduced temperature of crystallisation to mines values at simultaneous reduction of corrosion rate.
2 cl, 1 tbl, 6 ex
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