The analysis of characteristic parameters from generalized arc-tangent distribution production decline equation shows that if C=0, the decline equation can be transformed into hyperbolic decline equation of Arps decline equation;

• 通过对广义反正切微分分布递减方程特征参数的分析,指出当C=0时,该递减方程可转化为Arps递减方程中的双曲递减方程;