METHOD FOR DEVELOPING OIL DEPOSIT SITE Russian patent published in 2023 - IPC E21B43/20 

FIELD: oil industry.

SUBSTANCE: invention is intended to level the oil displacement front. A method is claimed for developing a section of an oil deposit, which includes opening up a productive formation and underlying aquifers with injection wells, opening up a productive formation with production wells, flooding a productive formation by in-well pumping in injection wells from aquifers into an oil-bearing formation, and withdrawing products from the productive formation through production wells. In this case, waterflooding of the productive formation is carried out with a pressure 15% higher than the initial reservoir pressure and not exceeding the threshold for the formation of auto-hydraulic fracturing cracks. Moreover, the volume of produced water is 1.1 times the volume of production from surrounding production wells, and the pumping cycle of produced water in injection wells is 25 calendar days. Over the next 3 days, the injection wells are idle. Then, a high-yield well is identified on the site and one day before stopping the injection wells, it is stopped for 5 days to redistribute the injected formation water into nearby production wells of the site with deteriorated filtration and capacitance properties.

EFFECT: increased efficiency of the oil displacement process due to in-well cyclic pumping of its own formation water into injection wells.

1 cl, 1 ex