METHOD FOR DEVELOPMENT OF OIL DEPOSIT Russian patent published in 2009 - IPC E21B43/16 

FIELD: oil and gas industry.

SUBSTANCE: invention is related to oil industry and may find application in development of oil deposit. Working substance is pumped through injection wells, produce is withdrawn from production wells and water-repellent material is pumped in production wells. In process of water-repellent material pumping, flow string equipped with starting clutch is lowered into production well. Along flow string water-repellent solution is delivered to bottomhole by means of circulation with its location in bottomhole in annular space. Flow string is closed in wellhead, and water-repellent solution is pushed by gas from annular space to bottomhole zone of bed until gas is exhausted through starting clutch in flow string. Flow string is opened in wellhead, and depression is created in bed. Stratal liquid is withdrawn along flow string, well is developed and produce is withdrawn with the help of pump equipment.

EFFECT: increased oil recovery of deposit due to reduced watering of production wells produce.

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