Abstract: In this paper,under the conditions of constant or variable,wellbore storage new models of gas flow are presented,and the analytical expressions of pseudo-pressure distribution in the gas reservoir have been obtained under three kinds of typical outer boundary conditions,and type-curves of pressure-drawdown with variable wellbore storage behavior have been drawn.

摘要： 对气井井筒储存是常数或是任意变数情况下建立了天然裂缝性气藏的渗流新模型,求出了在三种典型外边界条件下的气藏内拟压力分布精确表达式,并绘出了具有变井筒储存特征的试井典型曲线.

关键词: 裂缝性气藏, 渗流模型, 气井试井