FIELD: oil and gas industry.
SUBSTANCE: method involves steam pumping to productive formation, creation of steam chamber in formation and extraction of products. According to invention, pipe string equipped from below with ejector-mixer with low pressure chamber is lowered to the well. Inter-tube space of the well above productive formation is insulated with packer. Via pipe strings there pumped is water heated to the temperature exceeding steaming temperature at formation pressure, and under pressure exceeding steaming pressure so that transition of water to vaporous state is allowed in injector-mixer, suction of oil - product of the formation - from the space under packer, its mixing with steam and pumping to productive formation till pressure inside formation increases by 10-30%. After that steam pumping is stopped and the formation product extraction is started.
EFFECT: increasing method efficiency owing to its cheapening and eliminating saline deposits.
2 cl, 3 dwg
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