Speaker
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Accurate prediction of fluid transport and storage capacity in heterogeneous fractured media remains an important challenge for large-scale CO₂ and hydrogen storage. These phenomena directly impact the flow capacity and long-term integrity of storage sites, particularly under geomechanical perturbations such as induced seismicity or pressure evolution [1]. Emerging evidence suggests that seismicity does not inherently cause fault leakage that compromises CO₂ storage [2], yet deformation-induced heterogeneity introduce significant uncertainties in predictive models [3].
This work integrates fracture mechanics and transient pressure dynamics to develop a unified framework for stress-responsive transport in deep saline aquifers. By using high-fidelity heterogeneous fracture simulations, we quantify the equivalent permeability of heterogeneous rough fractures and solute transport. Results indicate that the resulting equivalent permeability values differ significantly from planar fracture approximations with averaged aperture [4].
| References | [1] Birkholzer, J.T., Oldenburg, C.M., Zhou, Q., 2015. CO2 migration and pressure evolution in deep saline aquifers. Int. J. Greenhouse Gas Control 40, 203–220. [2] Juanes, R., Hager, B.H., Herzog, H.J., 2012. No geologic evidence that seismicity causes fault leakage that would render large-scale carbon capture and storage unsuccessful. Proc. Natl. Acad. Sci. USA 109, E3623. [3] Andrés, S., Dentz, M., Cueto-Felgueroso, L., 2024. Anomalous pressure diffusion and deformation in two- and three-dimensional heterogeneous fractured media. Water Resour. Res. 60, e2023WR036529. [4] Kang, P.K., Lei, Q., Dentz, M., Juanes, R., 2019. Stress-induced anomalous transport in natural fracture networks. Water Resour. Res. 55, 4163–4185. |
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| Country | Spain |
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