Speaker
Description
Gas-driven multiphase drainage in porous media is pivotal for enhanced oil recovery, groundwater remediation, and CO₂ and hydrogen storage, where gas compressibility has the potential to stabilize both viscous and capillary fingering instabilities. While recent studies have demonstrated the role of compressibility in delaying fingering onset and severity in non-porous systems, its influence within porous structures remains poorly understood. This study addresses this knowledge gap by investigating the impact of gas compressibility on viscous and capillary fingering transitions in deformable porous media. Utilizing a novel pipe network model explicitly designed for compressible flow, we isolate compressibility effects from grain motion to analyze multiphase flow dynamics. The model circumvents experimental limitations on injection-reservoir volume control and supports stable, large-timestep simulations. Preliminary results for dense packings reveal significant variations in injection pressure evolution and fluid-fluid displacement patterns, with further studies planned for loose packings. By uncovering pore-scale mechanisms, this work positions gas compressibility as a vital parameter for flow front stabilization, providing new theoretical insights and practical strategies for managing multiphase flows in porous media.
| Country | Hong Kong |
|---|---|
| Water & Porous Media Focused Abstracts | This abstract is related to Water |
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