Mathematical modeling of CO2 storage in a geological formation

Abstract

Chapter 2 discusses, in a descriptive manner, the processes occurring during the geological storage of CO2. In this chapter, the mathematical models describing these processes are described. The chapter starts from the basic properties of the injected CO2 and of the native brine, proceeding to the relevant models for multiphase flow of CO2 and brine,the related chemical and reactive transport processes, the non-isothermal effects of CO2 injection and the mechanical deformation. The concept of degrees of freedom,facilitating the selection of a smaller number of equations to be solved, in order to obtain a complete solution for this multifaceted problem, is also discussed. The numerical and analytical approaches for solving these mathematical models are presented in the following Chap. 4.