根据油井供、排平衡原则，得出了抽油泵排量系数相对稳定状态下产量预测的关系；
According to the principle of supply and discharge balance, the method to predict oil yield is presented.
对其绩效评价应遵循全面性、相关性、成本—效益、相对稳定性等原则。
The achievement and benefit evaluation method for them should be in accordance with the principles of comprehensiveness, relevance, cost-effect, and relative stability, etc.
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