FIELD: oil and gas industry.
SUBSTANCE: acid surface-active composition for treating the bottom-hole zone of oil and gas wells contains, wt %: inhibited hydrochloric acid (calculated as HCl) 1-24; hydrofluoric acid HF 0.1-10.0; nonionic surfactant 0.1-2.5; water-soluble hydrophobizer 0.1-7.0; ammonium chloride 1.0-10.0; as a mixture of complexing agents, ARPD solvent and mutual solvent-petroleum reagent RUN 45.0-40.0; the rest is water.
EFFECT: increased efficiency of action and expanded field for application of composition.
2 tbl
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