By using a wave generator, the self -exciting pressure waves can be generated when well pumping unit works.
抽油井正常工作时，借助波动器可在井底产生自激压力波。
According to the failure site data of the well pumping unit in active service, its life statistical model is determined and the service reliability is evaluated quantitatively.
由在役抽油机故障的现场数据来判定其寿命统计模型，实现对抽油机使用可靠性的定量评定。
The paper gives brief calculation and analysis for the artificial well efficiency, which aims at the optimization design for pumping unit and for reference.
文章仅对抽油机井系统效率进行简单分析与计算，旨在为优化设计抽油机运行参数提供参考。
The software can help stylist design the pumping unit well.
这套软件，能够帮助设计人员更好的完成抽油机的概念设计。
For great workload well, the beam-pumping unit works out of balance generally. It not only wastes energy resources, but also shortens the service life of the pumping unit seriously.
常规游梁式抽油机普遍存在平衡不足的现象，既浪费能源，又严重影响抽油机的使用寿命。
The force conditions of the chain on a chain drive pumping unit without reverse rack are much more favorable than that on conventional chain drive pumping units, and can be well controlled.
无换向架链条抽油机的链条承受的总拉力为悬点载荷与平衡重的差值加连杆对链条的水平分力在链条上形成的附加拉力之和，受力状况优于普通链条抽油机，且能得到控制。
This unit is also possessed of the function of diagnosing the electrical control system on the pumping truck and itself as well.
该装置还具有对装药车电控系统的诊断功能和本身自诊断功能。
Theoretical basis for diagnosing well conditions with pumping unit electric power and its application effect are approached.
探讨了利用抽油机电功率对油井工况诊断的理论依据和应用效果。
This paper discussed how to choose an energy saving motor rationally for beam pumping unit to promote the system efficiency based on the oil well condition.
文中讨论如何根据油井工况合理地选择节能电机，以取得应有的节能效果。
This paper discussed how to choose an energy saving motor rationally for beam pumping unit to promote the system efficiency based on the oil well condition.
文中讨论如何根据油井工况合理地选择节能电机，以取得应有的节能效果。
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