文章探讨了有杆泵抽油机井的一堆故障诊断模型,归纳了求解一堆诊断模型的两类方法。当用付氏级数法求解时,运用采样定理验证了■(付氏级数的项数)与N(示功图采样点数)之间的关系,确定了参数的选择原则。在运用有限差分法求解诊断模型时,提出了按X方向推进的差分原则,从而克服了按时间t逐层推进时遇到的困难。 This paper discusses a bunch of fault diagnosis models of sucker rod pump wells and summarizes two kinds of methods to solve a bunch of diagnosis models. When using the Fu’s series method to solve, the sampling theorem is used to verify the relationship between ■ (the number of Fu’s series) and N (sampling points of dynamometer), and the principle of parameter selection is determined. When using the finite difference method to solve the diagnosis model, the principle of difference advancing in the X direction is proposed, which overcomes the difficulties encountered when pushing the layer by layer by time t.