METHOD OF PRODUCING BITUMINOUS OIL FROM A HORIZONTAL WELL Russian patent published in 2020 - IPC E21B43/24 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to a method of producing bituminous oil from a horizontal well. Method of producing bituminous oil from a horizontal well includes installing a casing string, annular space cementing above a horizontal portion, in which there is a perforation in the end portion and at the beginning of the horizontal portion, lowering the tubing string with the pump and drive, installing the packer between the perforated parts, lowering the production string, pumping of steam into the formation through the service column into the initial part and extraction of liquid by the pump with the drive from the formation through the end part of the horizontal section. Pump inlet is located in end part of horizontal section after lowering of tubing string. Technical string is located inside the tubing string and is communicated via radial channels for steam injection with the initial part of the horizontal section.

EFFECT: technical result is reduction of pressure and heat losses at pump inlet.

1 cl, 2 dwg, 1 ex