FIELD: engines and pumps.
SUBSTANCE: proposed pump comprises motor section composed of rotor and stator, transition section attached to motor section top part, protective section attached to transition section, and pump section attached to protective section top part and including several wheels and diffusers. Common solid shaft passes through motor section, transition section and pump section. Rotor and working wheels are fitted on common shaft. Total length of downhole pump makes smaller than 12 metres.
EFFECT: lower costs, compact design, higher reliability.
6 cl, 4 dwg
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