METHOD FOR DEVELOPING OIL DEPOSIT Russian patent published in 1996 - IPC

FIELD: oil production. SUBSTANCE: development plots are selected on a deposit as oil saturated isolated lens. Oil is extracted within development plot until stratum pressure is decreased by 20 - 25 %. Porosity, collector permeability, stratum depth and current stratum pressure of producing strata are determined. One or several producing wells in the central part of development plot with the highest porosity and permeability, and stratum depth not lower than mean value through the all plot, and the lowest stratum pressure are selected. The chosen wells are changed over to be injection ones. Working agent of 1.09 - 1.11 gram per cubic centimeter density is pumped in during a month. Byproduct Devonian water of 1.09 - 1.11 gram per cubic centimeter density, for example, may be used as working agent. Working agent is pumped in injection wells in such cyclic manner as 10 - 20 days pumping, 10 - 20 days outage. EFFECT: high productivity. 3 cl, 2 tbl