Poromechanical modeling of coal material

This chapter focuses on the modeling of coal behavior at the material scale. Modeling involves establishing a mathematical model - an analogue - of a real system. This model can be used to analyze experimental data obtained from the actual system being modeled or to predict how this system will respond to various stimuli. For example, in the context of coal seams, one might want to predict changes in permeability, temperature or internal stresses within the reservoir during fluid injection or production. Additionally, it may be desirable to predict the injection flow rate over time for a given pressure history. From a mechanical perspective, the focus is on the solid particle, allowing the deformations of the porous medium to be deduced. Naturally, these two particles can interact with each other; this is central to defining the relationships that describe the poromechanical behavior of a saturated porous material.