Transient Pressure Behavior of Volume Fracturing Horizontal Wells in Fractured Stress-Sensitive Tight Oil Reservoirs

Tight oil reservoirs tend to contain more natural fractures, and the presence of fractures leads a greater stress sensitivity in tight reservoirs. It is very challenging task model seepage volume fracturing horizontal wells considering stress-sensitive effects. Based on Laplace transform, Perturbation transform Stefest numerical inversion, this paper establishes well for fractured This allows us analyze study effect sensitivity, fracture interference, dual media complex network flow We apply delineate stages wells, it can be divided into seven I wellbore storage flow, II surface stage, III transition IV system proposed radial V interporosity VI VII stage. Wellbore coefficient mainly affects The larger is, longer duration will be. higher skin pressure drop is. capacity ratio has influence before occurrence channeling “groove” depth derivative curve dimensionless becomes shallower with increase ratio. earlier occurs from matrix leftwing position