oilfield vertical PCP oil production system

Principle
The progressive cavity pump consists of stator and rotor, the principle is that an annular seal space is formed in the suction side by the rotate of the rotor and the inner surface of the stator rubber, and goes to discharge end, then disappear. The oil is drawn in at the function of the suction side’s differential pressure, and pushed to the discharge end from the suction side. The pressure goes up continuously, the flow is uniform.

Advantages and characteristics
Advantages:
1. The flow is uniform and changes little under the different pressure;
2. No valve, and adaptability to gas well, it won't produce "gas locking"     phenomenon;

3. Structure characteristics: Little moving parts, short and easy flow channel, large flow area, little disturbance of oil flow, strong carrying capacity.
4. Good adaption to sands and paraffin, the pump can work in high-viscosity crude oil with high efficiency.
5. The advantages of the PCP are relatively speaking, and some special mediums will affect the hydraulic characteristic of it. But rather than pumping unit and the electric pump, the sensibility of PCP is smaller.

Characteristics:
1. The efficient, low speed AC PM synchronous motor is used to keep high power factor;
2. Transmission structure is simple, reasonable and efficient, which saves energy by 30%;
3. Low speed AC PM motor has big starting torque, so there is no need to reserve starting power;
4. With unique gradient torque release program, the elastic potential energy of the sucker rod can be released fast and completely;
5. The operation is safe and convenient due to stepless speed regulation.
Parameters