OIL DEPOSIT DEVELOPMENT METHOD Russian patent published in 2015 - IPC E21B43/20 

FIELD: oil and gas industry.

SUBSTANCE: according to the method the formation production is extracted through production wells, working agent is pumped through injection wells, and hydraulic fracturing of formation in production wells is performed. Meanwhile before the hydraulic fracturing of formation in the production well the oil deposit is developed with maintaining of optimum compensation of withdrawal of the formation production by injection of the working agent in the range 110-125%. After hydraulic fracturing of formation the production well is operated at increased flow rate. Before change of the optimum compensation of withdrawal determined at achievement of the front of change of formation pressure from the production well up to injection one, near the injection well the derrick cellar is organized with the pump with high pressure and volume of injection. The working agent is injected through a derrick cellar into the injection well at high injection pressure. The formation pressure from the injection well along the deposit is increased until achievement of the front of decreased pressure from the production well. The optimum compensation of withdrawal is being achieved. The development is continued with maintaining of optimum compensation of withdrawal of formation production by injection of the working agent in the range 110-125%.

EFFECT: increased oil recovery of the deposit.

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