METHOD OF DAMPING OIL AND GAS WELLS WITH HIGHLY PERMEABLE FRACTURES OF THE HYDRAULIC FRACTURING (VARIANTS)

摘要

FIELD: oil and gas industry.;SUBSTANCE: invention relates to the oil industry, in particular to the technology of killing oil and gas wells. Method according to the first variant is applied when injecting wells above 350 m³/day and includes sequential injection into the bottomhole zone of the blocking pack and the drilling fluid, while an emulsion-suspension system containing diesel fuel or prepared oil from a point of preparation and pumping of oil is used as the blocking pack, emulsifier, a colloidal solution of hydrophobic silica nanoparticles, plugging particles – hydrophilic silica nanoparticles, and also an aqueous solution of calcium chloride or potassium chloride. Colloidal solution of hydrophobic silica nanoparticles consists of silica, monomethyl propylene glycol ether, and water. As a drilling fluid, an aqueous solution of calcium chloride or potassium chloride with a hydrophobizer content is used. Method according to the second variant is applied when injecting wells above 350 m³/day, in this case, hydrophilic microparticles of ilmenite or tri-manganese tetroxide are used as tamponizing particles.;EFFECT: increasing the efficiency of geological and technical measures to muffle oil and gas wells with highly permeable fractures of hydraulic fracturing.;2 cl, 10 dwg