FIELD: oil and gas production.
SUBSTANCE: composition allowing restoration of increase of permeability of oil formation comprises hydrofluoride/fluoride mixture and water, wherein water has pH value within 0.5 to 14 and indicated mixture, more specifically, contains potassium fluoride peroxosolvate KF·H2O2 (0.7-20.0%) and potassium hydrofluoride KHF2 (0.5-20.0%). For water with pH values below 7 composition contains hydrochloric acid as acid component and for water with pH values above 7 composition contains potassium hydroxide as alkali component. Composition further contains 0.01 to 5.0% of ionic and/or nonionic surfactant and 0.01 to 5.0% of corrosion inhibitor.
EFFECT: increased permeability of formation and its treatment deepness.
5 cl, 2 tbl, 3 ex
