METHOD OF OIL-POOL DEVELOPMENT Russian patent published in 2008 - IPC E21B43/16 

FIELD: mining.

SUBSTANCE: method includes identification of production facility with identification in it nondrainable and/or weak drainable oil-saturated areas, pumping of displacement agent into input well and production withdrawal from producing well. At that there is additionally implemented intermittent character action to the nondrainable and/or weak drainable oil-saturated areas by means of methods which intensify production withdrawal. These methods from side of producing wells at least its part are implemented with periodicity no less than one time per three years, and from side of input wells at least its part are implemented earlier for 1-5 months and with periodicity 1.5-2 time more often then from side of producing wells. On the developing stage with production progressive logging in the range of action methods intermittently for 0.5-1.5 years is increased pumping pressure of displacement agent in input wells at least on its part. On the final stage of development seam pressure in producing wells at least in its part, is reduced till 0.7-0.9 of oil saturation by gas pressure.

EFFECT: increasing of withdrawal efficiency of oil from nondrainable or weak drainable bed areas of different types.

5 cl, 2 tbl