FIELD: oil industry.
SUBSTANCE: invention relates to oil industry. In method of chemical treatment of oily layer in first step in borehole zone is pumped in a volume filling of annular well space and bottom zone a hydrocarbon liquid consisting of light oil with additives of anionic or nonionic or cationic surfactant or mixtures thereof, such as decanol, syntamide-5K, emulsifier of cationic bitumen emulsions EKBE and carbon solvent selected from a group of diesel fuel, solvent MIA-prom, gasoline, fraction of aromatic hydrocarbons, mixtures thereof, and primary or secondary alcohols and corrosion inhibitor. At second stage a solution of sulphuric acid is pumped.
EFFECT: technical result is high productivity of wells and oil recovery of oil-containing formation.
6 cl, 9 ex
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