METHOD FOR HEAT TREATMENT OF BOTTOM-HOLE ZONE OF PRODUCING WELL Russian patent published in 2021 - IPC E21B43/24 E21B43/27 

FIELD: petroleum industry.

SUBSTANCE: invention relates to the petroleum industry, to the field of intensification of petroleum production by means of heat treatment of the bottom-hole zone of the formation of the producing well. To implement the method for heat treatment of the bottom-hole zone of a producing well, the dependence of the structure of the adsorption bed on the concentration of the surface active agent is determined. A surface active agent is selected, for the purpose thereof, the structure of the formed adsorption bed is determined, a surface active agent ensuring formation of a partial adsorption bed on the surveyed surface is selected. A well is selected for conducting the treatment operation, a control measurement of the recovery rate, wellhead and bottom-hole pressure is conducted, the well is surveyed in the steady and unsteady states. An acid-containing solution is injected into the bottom-hole, the acid-containing solution is removed from the well with a washing liquid, a packer apparatus is installed in the well. An aqueous solution of the surface active agent, heat carrier are injected consecutively, the well is held, followed by petroleum being extracted through producing wells.

EFFECT: increased efficiency of treatment of the bottom-hole zones of producing wells by thermal impact, reduced viscosity of petroleum and increased inflow thereof into the well.

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