OIL AND GAS DEPOSIT CONTROL METHOD Russian patent published in 2015 - IPC E21B43/00 

FIELD: oil and gas industry.

SUBSTANCE: invention is referred to oil and gas industry, and namely to methods of automatic flow control at well operation of oil and gas deposit. According to the method injectors and producers equipped with pump units and electric motors are used. A passive sonar multiphase flow meter is mounted at the mouth of each well. Pressure, temperature and flow rate is defined continuously in real time for each phase, including water. The data are collected and transferred to automatic flow process control system continuously in real time. The data are averaged for a certain period of time. Average flow rate is processed and defined by phases for the selected period of time. The results are compared with preset parameters and based on flow rate data for each phase dependency of flow rate for each well is defined on pumped volume of brine water. Version of pump units operation with electric motors for producers is selected and maintained so that oil flow rate is maximum and pumped volume of brine water and power consumption is minimum. At that when design flow rate values are exceeded one of the following actions is performed: efficiency of pump unit is reduced due to reduced rate speed of the electric motor; efficiency of pump unit is increased due to increased rate speed of the electric motor; pump unit is stopped temporarily to accumulate oil in the bottom hole. Product of the producers is separated into phases and transported depending on the phase to oil and gas collection system or reservoir pressure maintenance system.

EFFECT: increased efficiency of the method due to increased oil flow rate, reduced volume of brine water pumped and reduced power consumption.

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