METHOD FOR PRODUCTION OF HIGH-VISCOSITY OIL Russian patent published in 2017 - IPC E21B43/24 E21B7/04 

FIELD: oil and gas industry.

SUBSTANCE: method of production includes equipping the well with a casing pipe with two open zones on horizontal or inclined section, lowering the casing pipe of the lower tubing string with heat-resistant packer until the area between the opened zones is reached, lowering a submersible pump on the upper tubing string to first a opened zone, performing cyclic pumping of the heat carrier along the lower tubing string and lifting water-oil emulsion by the submersible pump to the surface. Prior to running, the lower tubing string with the heat-resistant packer is connected by its upper end to a bypass pipe mounted on the submersible pump, and they are lowered together on the upper tubing string. After completion of running into the upper tubing string, an additional pipe with annular gap and which is hydraulically connected to submersible pump outlet is introduced. When carrying out cyclical pumping, the heat carrier is delivered to the lower tubing string through the annular gap and a bypass pipe. The oil emulsion is lifted to the surface through the additional pipe.

EFFECT: improved efficiency of oil production by simplifying and accelerating the installation of equipment.

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