Reservoir Geomechanical Modeling during CO_2 Injection into Deep Qasim Reservoir: A Study Focused on Mitigating Climate Change

摘要

The storage of CO_2 in sedimentary reservoirs is one of the possible ways to alleviate the global warming caused due to the extensive emission of greenhouse gases. The concentration of CO_2 in the environment is continuously increasing and if the excess amount of CO_2 is not captured and stored, the concentration is expected to increase exponentially in the future. The excess CO_2 in the atmosphere need to be stored in deep sedimentary reservoirs. Once CO_2 is injected into the reservoir, it is mandatory to track the various associated issues like the migration of CO_2 towards the caprock, the pressure buildup, ground uplift, and faults reactivation during CO_2 injection. All of these issues need to be monitored to avoid the leakage of CO_2 from the reservoir. In this paper, a numerical modeling study is performed to model the geomechanical behavior of the deep Qasim Reservoir in Saudi Arabia. The pore pressure buildup and ground uplift was calculated during CO_2 injection into the reservoir. The reservoir stability analysis was performed using Mohr-Coulomb failure criterion.