METHOD AND DEVICE FOR DEVELOPING HIGHLY VISCOUS OIL FIELDS Russian patent published in 2018 - IPC E21B43/24 E21B43/34 F02G5/00 

FIELD: oil and gas industry.

SUBSTANCE: group of inventions relates to oil and gas industry and can be used in development of medium-scale oil reserves of high-viscosity oils located far from the equipped oil and gas producing regions, with subsequent processing of hydrocarbon raw materials directly on the field. By the method, the primary preparation of oil, gas and water, the processing of oil by separation into light fractions and asphalt-tar components are carried out. Direct stripping of the light fractions is then carried out. One part is used for a closed cycle in production operations. Other part is sent for recycling. Part of light fractions and part of the asphalt-resinous components are used in a closed cycle in technological production operations to generate electrical and thermal energy. Separated associated gas is drained and sent to generate electrical and heat energy. Prepared water is heated to a temperature of 80–85 °C and directed to production of steam gas, which at a pressure of 16 MPa and a temperature of 250–360 °C is fed to the injection well to warm up the formation and maintain reservoir pressure. Suitable installation is provided for carrying out the method.

EFFECT: increase in the oil recovery factor.

2 cl, 1 tbl, 1 dwg