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本文在文献〔１～３〕的基础上，建立了同心圆非均质组合模型油藏中考虑井筒储集和表皮效应单井系统的无因次压降的数学模型。给出了储层内各点处无因次压降的精确解析表达式，还给出了井底压力为常数时的瞬时产量和累计产量的解析表达式。
Based on the literature [1 ~ 3], this paper establishes the mathematical model of dimensionless pressure drop in single-well system of wellbore storage and skin effect in concentric heterogeneous combined model reservoirs. The exact analytic expression of the dimensionless pressure drop at each point in the reservoir is given. The analytical expressions of the instantaneous output and the cumulative output at constant bottom hole pressure are also given.