Advanced Vertical Analytical Model

This model simulates the pressure response in a vertical well within a rectangular-shaped reservoir with homogeneous, or dual-porosity characteristics. Note that the well may be at any location within the reservoir, and that the reservoir for the vertical model has no-flow boundaries. During very early times, the cylindrical source solution is used, which is followed by Green’s function solutions (Grindarten and Ramey, 1973). No-flow boundaries are modeled using the method of images. The result is superposed in time based on the rate history provided.