METHOD FOR DEVELOPMENT OF HIGH-VISCOSITY OIL DEPOSIT Russian patent published in 2016 - IPC E21B43/24 E21B7/04 

FIELD: oil industry.

SUBSTANCE: invention relates to oil industry and can be used in development of high-viscosity oil. Method employs a well with horizontal shaft and casing string. Horizontal well shaft is located near bottom of productive formation. Said shaft has an ascending end. Ascending end of well is made on height of up to half of productive formation thickness. Angle between axis of ascending end and vertical ranges from 0 to 85°. In ascending end of well are arranged end portion of filter and end of tubing string with a packer. Packer is installed between sections of filter with perforation. Tubing string with a packer used is a string with plugged end face and perforated end. In horizontal well shaft is further lowered a second tubing string with a pump. End of second tubing string is placed near packer. Heat carrier is pumped into formation through tubing string and perforation holes of filter in end part of horizontal shaft. Product is extracted through perforated holes in beginning of horizontal shaft. Supply of product to well head is performed via tubing string with pump.

EFFECT: technical result - increase of the deposit oil recovery factor.

1 cl, 1 dwg