METHOD FOR OIL FIELD DEVELOPMENT Russian patent published in 2007 - IPC E21B43/22 

FIELD: oil production, particularly to develop watered non-uniform oil reservoir with flooding thereof from porous fissured reservoirs having non-uniform compositions and formed by terrigenous and carbonate deposits.

SUBSTANCE: method involves performing simultaneous injection of reagents, namely aqueous biological surfactant solution and filler, in reservoir via injection well; forcing the reagents in reservoir with water and performing technological time delay for 24 hours. Reagent mass ratio is 90:10. The filler is wood flour.

EFFECT: increased efficiency due to possibility of active weakly drainable reservoir zones development, which provides oil recovery increase.

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