METHOD OF SUPER-VISCOUS OIL FIELD DEVELOPMENT Russian patent published in 2019 - IPC E21B43/24 E21B7/04 E21B47/06 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil-producing industry. High-viscosity oil deposits development method includes vertical injection wells and horizontal production wells drilling with located in the reservoir these wells sections opening. Wherein, at first, drilling the horizontal production wells with distances between them in the plane of 70–80 m with location in the reservoir for at least 1 m above the bottom or the oil-water contact level. Vertical injection wells are located between horizontal wells at a distance of 35–40 m from the production wells well bore middle part. Using the depth determining the maximum pressure, eliminating the deposit rocks integrity violation. Working agent injection through the injection wells is carried out in the amount of 20–40 tons/day. Taking through located at the injection well horizontal wells is carried out alternately until the temperature in the wellbore reduction below 50 °C and / or oil production rate reduction below 0.5–1 t/day in at least one horizontal production well in the reservoir, at that, into other horizontal production wells steam with the maximum possible volume is pumped at a pressure excluding the reservoir rock integrity violation, after which the horizontal wells are stopped for thermal capillary impregnation, after which the horizontal wells for injection and withdrawal are changed, until the next switch, then the cycles are repeated.

EFFECT: increase in the steam-cyclic method efficiency due to the horizontal production well drainage area warming up equalization, reduction in the production from the reservoir water content by the heat carrier into the production well breakthrough elimination, as well as reduction of the material costs due to the absence of the need to build additional horizontal injection wells.

1 cl, 2 dwg, 1 ex