OIL DEPOSIT DEVELOPMENT METHOD Russian patent published in 2013 - IPC E21B43/20 

FIELD: oil and gas industry.

SUBSTANCE: method involves in-line drilling of injection and production wells, pumping of displacement working agent through injection wells and extraction of oil through production wells. At the first stage, wells of injection rows and the first rows of production wells, which are the closest to them, are drilled in pairs and brought into operation. At the second stage, the second rows of production wells, which are the closest to the first rows of production wells, are drilled in pairs and brought into operation. At the last stage, a tightening central row of production wells is drilled and brought into operation. Besides, wells of injection rows are developed in "next but one" manner for injection at the first stage. At the second stage, after oil development, the rest wells of injection rows are developed for injection. All production wells of the first production rows and next but one of the second production rows are subject to formation hydraulic fracturing - FHF. At the last stage, production wells forming transverse rows after their oil development are developed for injection. Production wells of tightening central row are drilled in the form of horizontal and/or horizontally branched wells with reduction of the number of planned wells of that row by 3 times.

EFFECT: possibility of complete and uniform development of oil reserves as to the deposit area; increasing oil extraction coefficient.

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