DEVELOPMENT PROCESS OF PETROLEUM DEPOSIT Russian patent published in 2008 - IPC E21B43/20 

FIELD: oil and gas.

SUBSTANCE: invention is referred to oil and gas producing industry and can be used on reservoirs of sizable oil-filled thickness. According to the method a bottom part of a formation is opened. A water gas mixture injection is made cyclically under pressure, exceeding opening pressure of formation vertical fractures. As water gas mixture at first the high-dispersion water gas mixture is injected at an optimum ratio of water and gas injection volumes, determined of a proportionality condition of volumes rate of small pores less than the medium size and of large pores more than the medium size in a header, and at a final stage low-dispersion water gas mixture is injected. A cyclic injection is executed by injection pressure alteration on fill-in wells. In exploitation wells opening and production bleeding is made on all section of a productive part of a formation. Water gas mixture injection is alternated with water injection.

EFFECT: increase of formation sweep by affecting and due to it accretion of an oil reservoir recovery.

2 ex, 1 cl