Most shale gas reservoirs are exploited with the multi-hydraulic fracture method. In this paper, a new shale gas fractured horizontal well flow model is established which considers the effects of stimulated area's nonuniform distribution and gas desorption. With the plots of pressure and derivative curves, the stimulated area's volume and distribution characteristics are analyzed. The results demonstrate that the pressure curves are sensitive to fracturing effect. The well bottom hole pressure is lower when more areas are stimulated. The plots show that the duration of early linear flow depends on the volume of stimulated areas and their distribution, and that the fracture degree of stimulated area also affects the duration of early linear flow.

shale gas reservoir  /  multi-fracture horizontal well  /  flow model  /  transient pressure