In this research study, we conducted a Coupled thermal-stress-fluid flow numerical model oil the UTF Phase A SAGD project in order to investigate the fundamental geomechanical behaviour involved in the SAGD process, and to gain insight into the reservoir response to temperature and pore pressure changes. The numerical simulation is carried out by using a self-developed Coupled finite element model which incorporates Our proposed strain-induced permeability model. The obtained simulation results were compared with the measured data.