Deep tauch pump for deep boreholes with the motor and the sealing arrangement

摘要

A submersible motor and seal section containing a homogeneous lubricating and cooling fluid which, in addition, concurrently blocks the entry of ambient well fluid into the motor. The seal section is in fluid communication with the motor and with the ambient well environment. It accommodates thermal expansion and contraction of the lubricating and cooling fluid experienced due to the intermittent operation of the motor.