We use stochastic modeling, the permeability tensor principle, and the finite-element method to construct a discrete complex model of a fracture network, an equivalent continuum model, and a continuum model for anisotropic seepage in a complex fracture network described using the permeability tensor. Solution of these models lets us describe the process of gas production from reservoirs after hydraulic fracturing. In these models, we fully take into account the geological structural features of hydraulically fractured tight reservoirs and the morphology of three-dimensional fracture networks. We obtain a new model for predicting production from tight gas reservoirs after hydraulic fracturing.