An efficient finite volume discretization to simulate flows on 3D discrete fracture network for transient flow analysis and equivalent permeability upscaling
The organization of natural fracture networks induces flow paths that control fluid flows in reservoirs. Taking into account all heterogeneities is computationally very costly, therefore, equivalent multi-porosity and multi-permeability models have to be used. We present an innovating discretization procedure allowing to simulate flow on 3D Discrete Fracture Networks involving over 100.000 fractures. We then demonstrate how to improve the computation of an equivalent permeability tensor by combining analytical and clever-meshed numerical solutions
