OIL WELL OPERATION METHOD BY THE ELECTRIC CENTRIFUGAL PUMP UNIT Russian patent published in 2019 - IPC E21B43/12 F04D15/00 

FIELD: mining.

SUBSTANCE: invention relates to the field of the mining industry, namely, to the oil production by electric centrifugal pumps (ESP) units. After the ESP operation parameters entry into the control station, checking the installation tightness, setting the initial frequency of 50 Hz AC, setting the restriction on the pump temperature, recording the amperage and starting the ESP. At the same time recording the pressure at the pump inlet, the temperature at the pump and at the pump input. Pump is operation is performed up to the pressure value at the ESP inlet, greater than or equal to the oil with gas saturation pressure. When pressures equality is achieved, recorded the temperatures at the inlet and at the pump itself, and determining the well flow rate. At a constant or increasing for not more than 10 % pressure at the pump inlet for one or more hours, the ESP station is brought to the continuous operation mode. Fixing the well flow rate, pressure at the pump inlet, the temperature at the pump and at the pump inlet and the amperage, at that, the temperature difference on the pump surface with the temperature at the pump inlet remains constant or decreases by not more than 10% and stabilizes. With the pressure at the pump inlet is less than the saturation pressure and the said temperatures increasing difference, determining an increase in the well flow rate and, depending on its value, reducing the pump speed and bringing the installation to the continuous operation mode. With the pressure at the pump inlet above the saturation pressure, increasing the pump shaft rotation frequency, determining the current frequency and amperage, determining the pump temperature and continue the ESP operation with the most optimal flow rate, dynamic level, current and temperature on the pump surface values.

EFFECT: use of the invention allows to fully automate the launching process, bringing to the technological mode and monitoring the oil well ESP operation, which in turn will increase the ESP equipment overall reliability.

5 cl, 7 dwg