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A parametric analysis of capillary pressure effects during geologic carbon sequestration in a sandstone reservoir

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  • Hao Wu
  • Richard S. Jayne
  • Ryan M. Pollyea

Abstract

During carbon capture and sequestration, capillary forces and buoyancy effects strongly influence CO2 migration and plume geometry. To understand interactions between these processes, we implement a numerical modeling experiment of CO2 injections in a sandstone reservoir to understand how parametric variability reported in the literature affects numerical predictions of CO2 migration. We simulate ten years of supercritical CO2 (scCO2) injections for 189 unique parameter combinations (entry pressure, Po, and van Genuchten fitting parameter, λ) that control the van Genuchten capillary pressure model. Results are analyzed on the basis of a dimensionless ratio, ω, which is a modified Bond number that defines the relationship between buoyancy pressure and capillary pressure. When ω > 1, buoyancy governs the system and CO2 plume geometry is governed by upward flow. In contrast, when ω

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  • Hao Wu & Richard S. Jayne & Ryan M. Pollyea, 2018. "A parametric analysis of capillary pressure effects during geologic carbon sequestration in a sandstone reservoir," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 8(6), pages 1039-1052, December.
    • Handle: RePEc:wly:greenh:v:8:y:2018:i:6:p:1039-1052
    DOI: 10.1002/ghg.1815
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    1. Wu, Hao & Lubbers, Nicholas & Viswanathan, Hari S. & Pollyea, Ryan M., 2021. "A multi-dimensional parametric study of variability in multi-phase flow dynamics during geologic CO2 sequestration accelerated with machine learning," Applied Energy, Elsevier, vol. 287(C).

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