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利用压力叠加原理，建立了裂缝性油藏交叉断层条件下的数学模型，得到现场适用的拉普拉斯空间解。研制出了相应的试井理论曲线，并分析了压力及其导数理论曲线的特点。这些典型曲线在早期为单位斜率直线。在过渡期，压力导数曲线为数值低于０．５的无限作用径向流水平线，呈现“凹”字型；在晚期，压力导数曲线为数值高于０．５的无限作用径向流水平线，而呈现“上翘”。这些理论曲线既可用于压力降落试井分析，又可用于压力恢复试井分析。举例说明了理论曲线在试井分析中的应用。
By using the principle of pressure superposition, the mathematical model of fractured reservoirs under cross-fault conditions is established, and a Laplacian space solution applicable to the field is obtained. The corresponding well test theory curve was developed, and the characteristics of pressure and its derivative theoretical curve were analyzed. These typical curves in the early unit slope straight line. During the transitional period, the pressure derivative curve is an infinity horizontal radial flow line with a value of less than 0.5, showing a “concave” shape. In the late stage, the pressure derivative curve is an infinity radial flow line with a value above 0.5, And showing “upturned.” These theoretical curves can be used for pressure drop well test analysis, but also for pressure recovery well test analysis. An example is given to illustrate the application of theoretical curves in well test analysis.