OIL DEPOSIT DEVELOPMENT METHOD Russian patent published in 2015 - IPC E21B43/20 E21B43/26 

FIELD: oil and gas industry.

SUBSTANCE: oil deposit development method involves injection of working agent through injection wells and recovery of the product through production wells. Development is conducted with monitoring of volumes of withdrawal of formation production in production wells and injection of the working agent through injection wells with excess of volumes of injection above withdrawal. The absorption zones are pre-isolated at increase of water content of the production in injection wells. On achievement of the front of displacement from the injection well of the production well in the latter the hydraulic fracturing of formation is performed with increase of formation reservoir pressure to the pre-set value and in conditions of high oil content in borehole environment, changed owing to isolation of absorption zones. After hydraulic fracturing the water content in the production is monitored and at its decrease - recovery up to the pre-set size the development is continued at the pre-set modes with the same withdrawals of formation production and injection of the working agent.

EFFECT: increased oil recovery of the deposit.

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