SYSTEMS AND METHODS OF OIL AND/OR GAS PRODUCTION Russian patent published in 2016 - IPC E21B43/20 E21B43/22 

FIELD: oil and gas industry.

SUBSTANCE: invention is referred to oil and/or gas production. The specified water and additive represent a mixture containing approximately 50-99 mol % of water and additive containing simple dimethyl ether, simple diethyl ether or simple methyl ethyl ether. At that groups of wells are used. One group is used for reservoir flooding, while the second one is used for oil production during the first time period. Then groups of wells for reservoir flooding and oil production are changed during the second time period. The cycle is composed of the first and second time periods. Each cycle is increased in time per 5-10% in comparison with duration of the previous cycle. During first 10-80% of the cycle duration one mixture for reservoir flooding is injected with additives, during remaining time period of the cycle the other mixture for reservoir flooding is injected with additives including immiscible additives.

EFFECT: higher efficiency of extraction; method includes injection of water and additive to reservoir from the first well and oil and/or gas production from reservoir of the second well.

10 cl, 1 tbl, 12 dwg