METHOD FOR OPERATING AN ELECTRIC CENTRIFUGAL PUMP OF A WELL Russian patent published in 2021 - IPC E21B43/12 

EFFECT: oil industry.

SUBSTANCE: invention relates to the practice of operating oil wells using electric centrifugal pumps and can be used in oil companies in Russia. Said method of operation of electric centrifugal pump of well consists in the fact that the flow of formation products to pump inlet openings is organized through a downstream tubular liner, and it is then lifted through a tubing string using the pump's energy. In this case, the flow of formation products to pump inlet openings is carried out through electromagnetic valves uniformly installed on pump shank, made in form of cylindrical casing around pump inlet openings and submersible electric motor and tubing string, lowered to the top of productive formation. Moreover, formation production enters the liner and then into pump only through one valve, opening of which is carried out depending on the position of dynamic fluid level in annulus of the well so that the vertical distance from dynamic level to the open valve is not less than the minimum allowable value in closed position of remaining valves on the shank.

EFFECT: the technical result is to increase efficiency of electric centrifugal pump operation.

1 cl, 1 dwg