Abstract: In view of the objective fact that the system efficiency of the pumping unit wells in Qinghai Oilfield is low,Qinggequan Oilfield,a high-energy-consumption area,is selected as a demonstration area to save energy.Based on analyzing the mechanism of enhancing the system efficiency of pumping wells,utilizing energy-saving products,and conducting technological transformations for energy saving,the behavior of pumping units is greatly improved and the working life of pumping units is prolonged.What’s more,an optimization approach of pumping unit wells,which is suitable for demonstration areas,is developed.This solves the problems of low system efficiency caused by the unreasonable rod design and the excessively large pumping parameters.The system efficiency is increased to 18.6% from 12.94%,which may be a good reference to improving the system efficiency of pumping units in Qinghai Oilfield in the future.