Surface Drive Progressive Cavity Pumps
The PC Pump with surface drive is a new type of production
equipment, which is consisted with surface
drive equipment and downhole progressive cavity
pump. The surface drive equipment transmits the
power to the downhole through the rotating motion of
suck rod, then drive the rotor to rotate in the stator
downhole. PC pump is a positive displacement pump.
The rotor rotates within the stator, thus series of cavities
are formed and these cavities progress gradually from
the bottom (suction end) to the top (discharge end), carrying
the formation fluids through the pump and into
tubing. 
Main Advantages:
- Slow, Long Strokes
- Belt Transmission
- Low Torque Demand
- Optimum Structure Design
- High Reliability and Low Maintenance
Electric Submersible Progressive Cavity Pumps
The electric submersible progressive cavity pump (ESPCP) is a
new breakthrough in artificial lift system recent years, which combinethe flexibility of the progressing cavity pump with the reliability
of the electric submersible motor to handle your most difficult
artificial lift. It has wide fluid range, more suitable fordeviated well,
horizontal well, especially with viscous crude oil, high sand cut and
gas oil. The wear of tubing and sucker rod could be eliminated and
energy cost is reduced efficiently.
