METHOD FOR DEVELOPING THE OIL DEPOSIT Russian patent published in 2018 - IPC E21B43/20 E21B43/30 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the field of development of oil deposits and can be used in the development of a watered oil deposit. Method of developing an oil reservoir by cyclic flooding of the formation through injection wells and extraction of oil through producing wells includes the location of the production and injection wells in the bush in a seven-point system. Oil deposit is divided into triangles, injection wells with similar values of injectivity are selected. Cyclic impact on the production well is carried out by injecting water through the selected injection wells. Periodically, one of the three injection wells is disconnected around the production well to change the direction of the cyclic action. Duration of the first period of cyclic action is determined according to the given mathematical expression. Time to start the reaction of the production well is determined. First cycle period is carried out, followed by setting the duration of the second and third periods. Growth rate of the values of the aggregative stability of water-oil emulsion in production wells is determined at the beginning and end of each period. Dration of the periods in subsequent cycles decreases in proportion to the growth of aggregate stability growth from the minimum value, but not less than the time of the producing well response to the cyclic action. Production wells located in areas of high fracturing are identified, complicated by the presence of water well oil in the samples of the water-oil emulsion. Demulsification of production wells with similar growth rates of aggregate stability is carried out.

EFFECT: technical result is a reduction in the watercut level and an increase in oil production due to the prevention of oil dispersion and emulsification processes.

4 cl, 1 dwg