FIELD: oil-and-gas industry.
SUBSTANCE: proposed method comprises drilling of vertical and horizontal production and injection wells, injection of working agent in injection wells and oil extraction from production wells. Additional horizontal wall is drilled to penetrate through impermeable seam between oil and gas pools. Then, branches are drilled from horizontal borehole directed upward to terminate to oil pool and downward to gas pool. Now, hydraulic fracture is performed in horizontal well in interval of impermeable section to form hydraulic fractures to communicate oil and gas pools. In operation, fixed extraction of products is performed in production wells at oil pool. At penetration of gas into production wells, viscous fluid is objected in extra horizontal well to eliminate gas ingress in said well.
EFFECT: higher efficiency and oil yield.
1 dwg
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