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异相曲柄抽油机具有大幅度降低峰值扭矩、节约能源、又保留常规式抽油机皮实可靠等优点。本文介绍了这种抽油机的厂内和油田试验结果,说明开发这种新产品的意义。
The out-of-phase crank sucker has the advantages of greatly reducing the peak torque, saving energy and retaining the conventional sucker. This article describes the in-plant and field test results for this pumping unit, illustrating the significance of developing this new product.