FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil industry, particularly, to intensification of oil production. Essence of the invention consists in the fact that three and more stages of treatment of the bottomhole formation zone with the estimated periodicity of the stages, wherein realization of the second and each subsequent stage is performed at reduction of productivity and/or daily flow rate of well oil by 25 % and more for last 6 months of well operation. At the first and second stages, bottomhole formation zone is treated successively with high-stable emulsion-suspension system, acid composition of said compositions and aqueous solution of potassium chloride or calcium chloride with concentration of 10–100 kg/m3 and with solution density of 1,030–1,350 kg/m3, at the third and subsequent stages, the bottomhole formation zone is treated successively with a highly stable emulsion-suspension system, a composition of surfactants and alcohols of the given compositions and an aqueous solution of potassium chloride or calcium chloride with concentration of 10–100 kg/m3 and with solution density of 1,030–1,350 kg/m3, at that, rock bottomhole permeability is determined, and depending on its value – more or less than 1,300 D – said highly stable emulsion-suspension system is used with different ratio of components and different backfilling particles.
EFFECT: limitation of water influxes from high-permeability cracks of hydraulic fracturing of the formation, additional oil production, increased rate of hydrocarbon deposit development and current oil recovery factor.
1 cl, 11 dwg, 17 ex
