Three-dimensional Flow Analysis in Complex Fracture Networks through Green's Function.

Three-dimensional Flow Analysis in Complex Fracture Networks through Green's Function. Traditional simulation methods struggle with unconventional reservoirs, which have extremely low permeability and complicated natural fracture systems. Traditional numerical approaches like dual-porosity and dual-permeability models are unable to adequately account for the impact of fracture connectivity and topology, particularly in three-dimensional domains. This paper proposes a semi-analytical solution for simulating transient single-phase flow in fractured porous media using Green's functions. The approach allows for precise and effective pressure and production predictions by explicitly incorporating the geometry and connectivity of intricate fracture networks. The suggested model includes steady-state and transient fracture flow equations together with Green's functions for point, line, and plane sources obtained for an anisotropic cuboidal reservoir. The model is validated against both traditional analytical solutions and commercial numerical simulators, and superposition principles are used to achieve coupling between the reservoir and the fracture. Real field data from the Barnett Shale, multi-stage transverse fractures, and simple planar fractures are among the case studies. The findings show that the technique can capture precise flow behaviour and pressure transmission dynamics in arbitrarily complicated fracture systems while greatly decreasing computing time. This study aids in the creation of a reliable and scalable methodology for simulating and optimizing production in unconventional reservoirs.