Development and application of the new rod-type screw pump

Influence of resonance on the partial abrasion of rod string in screw pump well;

Dynamics analysis on partial abrasion and fracture of driving rod in screw pump wells;

According to the energy loss of every part of screw pump well,established system efficiency analysis model for the well.

Study of screw pump well fault diagnosis based on BP neural network;

Research on fault intelligent diagnosis for screw pump drive units;

Development and application of testing apparatus for surface drive screw pump wells;