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July 12, 2026ACS OmegaOpen Access

Study on the Difference of CO 2 Storage in Low-Porosity and Low-Permeability Heterogeneous Reservoirs under the Restriction of Gas–Water Two-Phase Seepage Characteristics

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Authors

LXLujia XiaoJSJunzhi SunCWChenglin Wang

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Overview

Randomized trial investigates CO2 storage dynamics in low-permeability reservoirs, indicating key influential factors.

Key Points

  • This study aims to explore the effects of gas-water flow characteristics on CO2 storage capacity in low-porosity reservoirs.
  • Utilized Tough/Petrasim simulation tool to develop a CO2 geological storage model.
  • Examined various gas-water relative permeability models to assess their impact on CO2 plume migration and pressure accumulation.
  • Analyzed the effect of residual water saturation on CO2 storage capacity and effectiveness in saline aquifers.
  • CO2 storage capacity significantly varies based on the relative permeability function, influencing plume migration and pressure accumulation.
  • Higher residual water saturation increases pressure accumulation, which may pose risks to CO2 storage projects.
  • VG function predictions are more conservative than those from Corey and linear functions in heterogeneous environments.

Cite This Study

Xiao et al. (2026) studied this question.

synapsesocial.com/papers/6a532e624f7abc118adecb33https://doi.org/10.1021/acsomega.5c13183
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