介绍了抽油机井系统效率的数学模型及系统效率控制图的功能 ,论述了抽油机井系统效率控制图绘制系统的设计方法 .绘制系统可实现抽油机井系统效率控制图的显示和打印 ,并能依据打印纸在当前打印机上的行列点阵数 ,对图形放大处理 ,实现了图形的打印可随打印纸的大小而变化 ,与打印机无关 The mathematical model of system efficiency and the function of system efficiency control chart are introduced, and the design method of efficiency control chart system of pumping well system is discussed.The drawing system can display and print the efficiency control chart of pumping well system. Can be based on the number of printing paper in the current number of rows and columns on the printer, the graphics amplification processing, graphics printing can be achieved with the size of the paper changes, and the printer has nothing to do