DEVELOPMENT METHOD OF OIL DEPOSIT BY WATER-FLOODING Russian patent published in 2013 - IPC E21B43/20 

FIELD: oil and gas industry.

SUBSTANCE: at development of an oil deposit by means of thermal water-flooding, inter-well pumping of formation water is performed from a below-lying formation to an above-lying productive formation and extraction of formation product is performed through production wells from productive formation. At inter-well pumping, water is extracted from the formation with temperature exceeding the productive formation temperature not less than by 20°C and with mineralisation of formation water, which is higher than mineralisation of water in productive formation not less than by 56 g/l; inter-well pumping is started at oil development stage, when formation pressure is decreased, and development is performed in formation pressure rise mode. Injection is performed in a cyclic mode.

EFFECT: increasing oil recovery of the deposit in fractured-porous manifolds owing to providing the possibility of increasing formation pressure as quickly as possible.

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