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。

One effective way is preferred pump barrel and plunger of materials and surface treatment processes.

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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。

The bending of pump barrel will not happen as low part fixed pumping piston going downward that only happens when it works in heavy oil well.

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该模型不仅适用于柱塞与泵筒正常间隙漏失的仿真计算，也适用于非正常间隙严重漏失的计算。

This model is not only adaptable to the calculation of the leakage of the normal clearance, but also to the calculation of the severe leakage of the abnormal clearance.

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