One effective way is preferred pumpbarrel and plunger of materials and surface treatment processes.
其中一个有效的方法就是优选泵筒和柱塞的材料和表面处理工艺。
2
The bending of pumpbarrel will not happen as low part fixed pumping piston going downward that only happens when it works in heavy oil well.
而泵筒下部固定泵柱塞上行时，泵筒不会发生弯曲，只是其柱塞在稠油井中下行时泵筒才会发生纵向弯曲。
3
It is the key study how to make sure the pressure distribution of liquid in the pumpbarrel and to study the pump valve-ball's movement to improve the systematic efficiency.