FIELD: oil and gas industry.
SUBSTANCE: before operations of hydraulic fracturing in the productive formation by means of explosion nearfield is created as cavity with initial cracks, whereto borehole electrohydraulic device is placed and breakdown fluid is supplied. Hydraulic fracturing of the formation is made by formation pressure pulses in the operating fluid due to electrohydraulic discharges in the operating breakdown fluid by continuous or periodical supply of electric energy to the well and its accumulation in the area of hydraulic fracturing up to the required level with further switching - delivery of accumulated energy to discharge electrode system of the borehole electrohydraulic device. Created fractures are formed in the cavity along stratifications or thickness of the productive formation.
EFFECT: higher oil and gas recovery efficiency.
2 cl, 6 dwg
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