FIELD: oil and gas industry.
SUBSTANCE: method includes pumping-out of fluid by the centrifugal pump, at the beginning of which the fluid is subjected to separation and the emitted gas is sent to annular space, and the separated liquid is injected by the centrifugal pump in a laminar current into the nozzle of the liquid jet ejector installed on the tubing string above the dynamic level of the borehole fluid then simultaneously with the separated liquid by the ejector gas is sucked away from annular space into the tubing string. The fluid is produced by the centrifugal pump with the pressure head selected from the condition of distribution of pressure on lifting of mass of gas-liquid mix along the tubing string and the separated liquid along the pipe between the centrifugal pump and the ejector and on operation of the ejector taking into account the depth of dynamic level. Through passage sections of the nozzle and the chamber for mixing of the liquid jet ejector are set directly proportional to the output and volume of gas and inversely proportional to the depth of dynamic level of the borehole fluid. The pumping and ejecting unit for implementation of the named method is also described.
EFFECT: improvement of reliability of well operation.
3 cl, 2 dwg
