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
