OIL DEPOSIT DEVELOPMENT METHOD Russian patent published in 2013 - IPC E21B43/16 

FIELD: oil and gas industry.

SUBSTANCE: method includes water-gas mixture pumping to injection well and plugging material to production well in order to increase oil recovery factor and to decrease hazards of premature gas leakage. According to the invention treatment of injection and production wells is made simultaneously. At that water-gas mixture is pumped to injection well in ration of gas and water equal to 2:1 and pumping volume equal to 1.6 of oil-saturated pores in the formation. Plugging material is pumped to production well on cyclic basis. In each subsequent cycle volume of plugging material is reduced per 20-30%. At that volume of plugging material pumping does not exceed 20% of highly permeable pores of the formation. Associated gas or natural gas or their mixture is used as gaseous agent while polymer-silicate compound is used as plugging material.

EFFECT: increasing oil recovery factor due to increase of movable oil share in result of plugging of highly permeable areas of the formation.

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