Advanced Multilayer Analytical Model

This model simulates the commingled flow from any number of independent layers as shown below. Each layer can have its own model type (e.g., vertical, fracture, horizontal, etc.). All layers are considered to have an identical initial pressure (pi), but other parameters (i.e., skin, permeability, net pay, etc.) can be set independently in each layer. No crossflow between the layers can occur, except at the wellbore.