FIELD: oil and gas industry.
SUBSTANCE: method for treatment of bottomhole formation zone, characterized in that bottomhole formation zone is treated successively with emulsion solution-ES, oil fringe and acid composition consisting of 15% hydrochloric acid, diethylene glycol, acetic acid, water-repellent agent based on amides, corrosion inhibitor and industrial water, at that, wetability of bottomhole formation zone rock of production formation is preliminary determined and in case of rock hydrophilicity of productive interval, direct type ES of the following composition is used, wt %: hydrocarbon phase in the form of diesel fuel or prepared oil from oil-collecting station 20 -25, emulsifier of Sinol-EM type or sinol EMP 3-5, colloidal solution of silicon dioxide nanoparticles containing (wt %): colloidal silicon dioxide in acrylic acid 40, propylene glycol monomethyl ether 59.5 and water - the rest, 0.5-3, aqueous phase in the form of solution of calcium chloride or sodium chloride solution-the rest, in case of hydrophobic properties of these rocks an ES of reverse type is used in the following composition (wt %): said hydrocarbon phase 40-45, said emulsifier 3-5, said colloidal solution of nanoparticles of silicon dioxide 1-3, aqueous phase in the form of solution of calcium chloride or sodium chloride solution-the rest.
EFFECT: increased emulsion solutions stability for complex technology of oil production intensification, obtained additional oil production, increased efficiency of wells with high production rate.
13 ex, 7 dwg
