BOREHOLE PUMP UNIT Russian patent published in 2017 - IPC F04B47/06 F04B17/03 

FIELD: oil and gas industry.

SUBSTANCE: unit contains the placed in the single housing the plunger pump, equipped with delivery valves, and gravity gas separator, formed by the area between the single housing and the plunger pump cylinder, over which the return valves block is located. It contains a connecting coupling for mounting of the borehole pump unit to the tubing string. The submersible linear motor is installed under the plunger pump. The damper of the top extreme point of the slider stroke is mounted under the plunger pump with delivery valves. The damper of the bottom extreme point of the slider stroke is mounted at the lower part of the linear motor base. The telemetry unit is located under the linear motor, including the pressure and temperature sensors of the borehole fluid, vibration sensor, the clinometer and measuring unit, connected with the temperature sensors, installed in the linear motor and connected with the ground control unit through the zero point of the linear motor coils, connected by the star. The ground control unit is designed as the three-phase high frequency inverter controller and the output transformer, connected to the immersion linear motor by three-wire insulated cable.

EFFECT: improved reliability and energy performance.

14 cl, 7 dwg