FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil and gas industry and can be used in oil production. Installation of electric submersible hydraulic piston pump comprises interconnected ground control station and a step-down transformer of power supply system, power cable and underground equipment suspended on tubing string to well head. Latter consists of hydraulic piston pump and engine with slide valve connected to tank for oil or hydraulic fluid and power volumetric pump with an electric motor. Base of submersible motor is connected to submersible oil-filled step-down transformer of two-step power supply system. Plug input is connected to power cable and phase windings on a cylindrical elongated in length of closed magnetic conductor mounted in cylindrical housing with a base and head with terminals for connection with motor.
EFFECT: apparatus has low metal consumption and energy consumption, is compact and has a simple design, is easy to maintain, repair and operate.
7 cl, 3 dwg
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