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ORIGINAL RESEARCH article

Front. Energy Res.
Sec. Advanced Clean Fuel Technologies
Volume 12 - 2024 | doi: 10.3389/fenrg.2024.1372655
This article is part of the Research Topic Production Technology for Deep Reservoirs View all 36 articles

Effect of permeability anisotropy on the CO2 saturation distribution and phase change during a leakage event in a saline aquifer

Provisionally accepted
Chaobin Guo Chaobin Guo 1*Xinwen Wang Xinwen Wang 2
  • 1 CAGS, Beijing, China
  • 2 Chinese Academy of Geological Sciences, Beijing, China

The final, formatted version of the article will be published soon.

    Predicting impacts of potential carbon dioxide (CO2) leakage into shallow aquifers that overlie geologic CO2 storage formations is an important part of developing reliable carbon storage technology. To quantifying the effect of permeability anisotropy, a three-dimensional hypothetical reservoir model was formulated to analyze the migration behavior of CO2 under diverse permeability anisotropy scenarios. Sensitivity analyses for parameters corresponding to the permeability anisotropy and the leakage rate are conducted, and the results suggest that permeability anisotropy significantly affect the CO2 migration characteristics. Increasing the parameter of vertical/horizontal permeability ratio results in longer CO2 migration distances, which enhances the aqueous phase ratio and safety through more interaction with the aquifer, but also raises the potential of the leakage reaching the ground surface due to higher gas ratio. A comprehensive understanding of these dynamics is crucial for implementing effective monitoring and management strategies.

    Keywords: CO2 geological storage, Permeability anisotropy, numerical simulation, Leakage evaluation, phase change

    Received: 18 Jan 2024; Accepted: 10 May 2024.

    Copyright: © 2024 Guo and Wang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Chaobin Guo, CAGS, Beijing, China

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