FIELD: oil producing industry; designing of power generating plant for well oil producing. SUBSTANCE: plant has hydraulic drive, control unit and high pressure pipes. Power hydraulic cylinder and hydraulic drive pump with piston are installed in common housing with branch pipes in oil well tubing string. Valve seats and valves are installed in hollow rod. Hydraulic drive is additionally connected through high-pressure pipe control unit with under-piston space of hydraulic drive pump. Valves seats and valves are installed in pipes of common housing. EFFECT: enlarged operating capabilities. 2 dwg
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