FIELD: motors and pumps.
SUBSTANCE: group of inventions relates to the submersible pumping systems for fluid media pumping from wellbore. Pumping system comprises filled with the first dielectric lubricant electric motor, and driven by the electric motor pump. Pumping system further comprises lower protector, connected to the electric motor and being in the flow communication with it, and upper protector mounted between the electric motor and the pump, and filled with the second lubricant different than the first one. Upper protector is flow-through isolated from the motor.
EFFECT: disclosed is the electric submersible pumping systems protector design.
23 cl, 8 dwg
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