This experimental thesis delves into the study of Tournemire Shale, in particular it investigates failure mechanisms and wellbore integrity during drilling operations through a comparative approach using several constitutive models integrated in FLAC2D 8.1 (Fast Lagrangian Analysis of Continua, FDM). Shale formations are most often found as cap rocks in reservoirs, which makes their structural and hydraulic integrity vital, especially given their important role in the geological storage of CO2, H2 and CH4 in the current energy transition. The methodological approach found its basis on a validation check between the analytical solution of Kirsch and the first, simple but essential Isotropic Linear Elastic model under dry conditions implemented in the software.