FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil industry and is intended for production of high viscous oil by means of thermal action on oil formations at supply of heat carrier in them. Device for thermal impact on oil formation, containing three-phase power supply, three pressure pipes for supply of heat carrier to be placed in the well, and electric heater. Electric heater has three cores from metal with low specific resistance, to which phases of three-phase power supply are connected. At that, each conductor electric heater so is arranged inside its discharge pipe, that between core and discharge tube gap is formed for supply of heat carrier, lower ends of three conductors are connected at one point. Each pressure pipe includes inner layer of flexible electro-insulating material, external layer of flexible metal braiding and intermediate layer of flexible heat insulating material.
EFFECT: technical result of the present invention consists in ensuring easy installation and operation, possibility to use in curved wells of small diameter.
7 cl, 2 dwg
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