DEVELOPMENT METHOD OF FRACTURED-POROUS TYPES OF RESERVOIRS Russian patent published in 2014 - IPC E21B43/20 

FIELD: oil and gas industry.

SUBSTANCE: method comprises drilling producers and injectors, injecting water via injectors and withdrawing product via producers. According to the invention water is injected at the initial stage of development. When one of producers is flooded by the injected water up to 95%, the injector is identified where water is broken. To the water injected to this injector ash is added; ash is represented by remains of burn solid fuel with particle size of 70 mcm and concentration of 50 mg/l at the most. When water cut in the producer decreases per 25% or more water without ash is injected. These cycles are made for all watered wells and repeated till water cut after injection of water with ash decreases less than 95%.

EFFECT: increasing oil recovery factor of the productive stratum and reducing water cut rate of the product in producers.

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