ABSTRACT
This paper proposes a methodology to model the behavior of the first meters of a borehole submitted to a high-pressure fluid injection, by using a Discrete Element code. Our goal is to reproduce the phenomena observed in-situ and to build tools allowing us to study the influence of each aspect of the perturbation. We first describe the rock model, including the microscopic and macroscopic mechanical and thermal properties, the initial and boundary conditions, and the method for fracture propagation modeling. Then, we present all concepts developed to model the Hydro Thermo Mechanical solicitation. In the end, we analyze the results obtained from hydraulic stimulation tests.
