شبيه‌سازي تزريق CO₂ در آبخوان¬هاي شور براي ذخيره‌سازي CO₂

The rise of carbon dioxide (CO₂) levels in the atmosphere is one of the most critical environmental problems with global climate change. The geological storage of CO₂ in deep saline aquifers is regarded as one of the most viable an‎d technically feasible approaches for mitigating greenhouse gas emissions. Saline aquifers are abundant, have enormous storage potential, an‎d typically lie at depths which would be optimal for long-term storage of injected CO₂. Thus, if you want to ensure the safety an‎d efficiency of carbon storage projects, it is very important to understan‎d what happens when CO₂ is injected into such formations (what happens afterwards with its migration an‎d trapping mechanisms within these formations). (Zhang & Bachu, 2011, p.121). The present study is concerned with the numerical simulation of CO₂ injection into a saline aquifer intended for geological storage. This reservoir simulation model simulates the response of CO₂s in a geological formation at real reservoir conditions, namely considering pressure distribution, phase behavior of multi-component mixture an‎d interaction between CO₂, formation water an‎d reservoir rock. It is a simulation designed to assess their CO₂ storage efficiency an‎d investigate the primary trapping mechanisms such as structural, residual, dissolution an‎d mineral trapping. (Bickle, 2009, p.166). We input realistic subsurface conditions into the model using key reservoir parameters (porosity, permeability, temperature, fluid properties). The study explores the impacts of injection rate an‎d reservoir properties on CO₂ plume migration, pressure buildup, an‎d long-term storage security through simulation scenarios. (Pruess & García, 2002, p.283) These new results are anticipated to offer deep insight into the mechanisms controlling CO₂ injection (displacement, capillary trapping, an‎d dissolution) in saline aquifers an‎d will help improve effective carbon storage strategies that are safe. Furthermore, the findings may support the development of carbon capture an‎d storage (CCS) technologies as an effective approach to mitigate climate change an‎d reduce atmospheric CO₂ emissions.

حميدرضا شاه وردي

محسن محمدي , روح اله هاشمي