On the basis of a large number of field test data, the regression of the displacement coefficient and system efficiency for pumping unit wells were established.
本文在抽油机井大量现场测试数据的基础上，建立了抽油机井系统效率、排量系数这两个重要指标与诸影响因素之间的回归方程。
To solve the problems of low efficiency and high power consumption and inconvenient parameter adjustment of beam pumping units, a motor-reversing type pumping unit is developed.
为了解决游梁式抽油机效率低、能耗高和调整参数复杂等问题，研制开发了电动机换向智能抽油机。
Accurate calculating of the effective horsepower of pumping unit is the key to calculating the pumping unit system efficiency.
正确计算抽油机井的有效功率是计算抽油机井系统效率的关键。
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