Analytical solutions of transient 2D flow through double-permeability media are presented. The pressure response of a vertically fractured well intercepting a layered reservoir with crossflow is described through the methods of integral transform and variable separation. The influences that parameters of a double-permeability model such as the permeability ratio, F-k, interporosity flow parameter, lambda, and storativity ratio, omega, have on the pressure response of a fractured well are calculated and analyzed by numerical inversion. Log-log diagnosis graphs of fractured well pressure are given and analyzed here.