Fiber Bragg grating‐based experimental and numerical investigations of CO₂ migration front in saturated sandstone under subcritical and supercritical conditions

Carbon dioxide (CO 2 ) can be at risk of leakage during its storage in deep saline aquifers due to stress field changes in the reservoir. The aim of this study was to investigate the effects of CO 2 injection pressure on dynamic strain response of the reservoir and the CO 2 migration process. A series of core flooding experiments was performed with the‐state‐of‐art fiber Bragg grating sensors. The results show that the surface strain response...