FIELD: oil industry, particularly enhanced recovery methods for obtaining hydrocarbon.
SUBSTANCE: method involves perforating water-bearing and oil-bearing formation sections to expose thereof; simultaneously extracting oil and water through producing wells and injecting water in water-bearing reservoir through injection wells. Perforation interval height and density in producing wells is set to be inversely proportional to permeability of above sections or proportional to oil and water viscosity in reservoir environment. As oil reserves decreases perforation interval is enlarged in oil-bearing reservoir section. Liquid is extracted to pump inlet from producing well zone located below oil-water contact. Water is injected via injection wells outside oil-bearing zone outline.
EFFECT: increased oil recovery from deposit.
1 ex
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