Abstract
This chapter discusses physical processes of multiphase flow and concepts for fracture–matrix interaction in fractured porous media. To quantify fracture–matrix flow, it discusses a general mathematical framework model and numerical approach for dealing with fracture–matrix interactions, applicable to both continuum and discrete-fracture models. It shows possibility of formulating a uniform, generalized mathematical model as well as unified numerical scheme to simulate multiphase fluid flow in any type of fractured reservoir. This chapter demonstrates that, with this unified approach, modeling a particular process of fractured-media flow becomes a matter of defining a set of state variables along with their interrelations, once a fractured-medium system is properly discretized into an unstructured grid. For application, the general numerical formulation as well as its numerical modeling approach is applied for analyzing transient flow in fractured reservoirs and laboratory results.
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