FIELD: oil and gas industry.
SUBSTANCE: during execution of the thermoshaft method of high viscous oil production including vapour injection in the oil reservoir, and oil extraction via the production wells, according to the invention the lower layer of the oil reservoir is developed by several horizontal wells drilled from the drilling level of the oil reservoir, steam injection in the lower layer of the reservoirs via the underground system of steam supply, at that the horizontal wells are developed under steam cycle mode, and the underground steam supply system of the further horizontal wells are connected after development of the previous and switching of part of the horizontal wells to the production mode.
EFFECT: creation of the method of high viscous oil production ensuring increased extraction coefficient of the crude oil due to uniform heating of the oil reservoir through height at minimum heat losses per oil production.
3 dwg
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