Abstract

This chapter discusses physical processes and conceptual models of multiphase fluid and heat flow in porous media. Fluid and heat flow occurs in many reservoir systems and is controlled by thermodynamics of multiphase fluid flow, coupled with heat transfer in reservoirs. To model such fluid and heat flow, this chapter presents generalized governing equations for multiphase fluid flow, multicomponent transport, and heat transfer in porous and fractured media, providing a framework model for simplification, extension, and application in practice to cover more general scenarios of fluid and heat flow and chemical transport in reservoirs. To complete mathematical description of fluid flow and heat transfer, governing equations need to be supplemented with constitutive equations to express interrelations and constraints of physical processes, variables, and parameters, provided in the chapter. In addition, this chapter presents a general numerical formulation and solution scheme.

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