Traditional beam oil pumping machine is composed of asynchronous motor, a speed reducer, a crank, connecting rod and beam and many other components, complex structure and high cost; and most of the beam oil pumping machine operates at periodic fluctuations, also low load rate, low efficiency and high energy consumption. In recent years, energy saving and emission reduction in China has attracted the attention of the enterprises and the government at all levels, so the oilfield enterprises adopted a number of energy-saving methods, including oil lifting technology of screw pump for oilfield in sandy, gas and heavy oil fields, and the system has a less investment, energy saving, convenient maintenance, high safety advantages. Guilin Stars Technology Co. Ltd developed low speed and high torque screw pump direct drive pumping system adopts three-phase permanent magnet synchronous motor, and with the matched servo drive, the system provides special intelligent oil pumping control system with following basic characteristics:

◆  Up to 90% motor efficiency, more than 80%　efficiency with 20%--200% rated load.          

◆  Direct torque drive, no gear and belt mechanism, only need an area of 2-4 square meters for installation.          

◆  No impact on starting, 20dB noise reduction, greatly reduce the maintenance requirements.          

◆  No high speed moving parts, no abrasion, long life, stable operation, excellent safety.          

◆  Simple installation, simple control.          

◆  Low cost. Traditional beam oil pumping machine takes about 300 thousand RMB.          

◆  The system equipped with remote data transceiver communication function, support network, achieve real-time monitoring and measurement of oil well operation in the production control room, and receive oil pressure, flow rate, motor speed, torque, temperature etc..          

◆  High reliability magnetic encoder operating in outdoor conditions.

◆  Active energy discharge shutdown, failure braking shutdown, accidental power failure motor speeding protection and system self restart alarm are in the servo system, guarantee system security and staff safety.