FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil-field equipment and can be used in pumping production of formation fluid from wells with diameter restrictions. Submersible pump unit consists of a rectifier electric motor and a pump connected to the tubing string. Valve motor is equipped with tubular shaft with flow channel, which is connected with pump shaft by spline coupling, having holes in wall. Holes communicate pump outlet with flow channel of tubular shaft connected with tubing string. Sealed thin-wall shell on stator serves as protection device of valve electric motor from borehole fluid; at that, hole is made in valve motor housing to communicate its cavity with well.
EFFECT: invention is aimed at simplifying the submersible pumping unit design and improving its reliability.
1 cl, 1 dwg
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