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Effects of Reservoir Heterogeneity on CO 2 Dissolution Efficiency in Randomly Multilayered Formations

Author

Listed:
  • Xiaoyu Fang

    (Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524006, China)

  • Yanxin Lv

    (Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524006, China
    Department of Petroleum Geology & Geology, School of Geosciences, University of Aberdeen, Aberdeen AB24 3UE, UK
    State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China)

  • Chao Yuan

    (Shenzhen Key Laboratory of Deep Engineering Sciences and Green Energy, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China)

  • Xiaohua Zhu

    (School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China)

  • Junyang Guo

    (Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524006, China)

  • Weiji Liu

    (School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China)

  • Haibo Li

    (State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China)

Abstract

Carbon dioxide (CO 2 ) dissolution is the secondary trapping mechanism enhancing the long-term security of CO 2 in confined geological formations. CO 2 injected into a randomly multilayered formation will preferentially migrate along high permeability layers, increasing CO 2 dissolution efficiency. In this study, sequential Gaussian simulation is adopted to construct the stratified saline formations, and two-phase flow based on MRST is established to illustrate the spatial mobility and distribution of CO 2 migration. The results show that gravity index G and permeability heterogeneity σ Y 2 are the two predominant factors controlling the spatial mobility and distribution of CO 2 transports. The CO 2 migration shows a totally different spatial mobility under different gravity index and heterogeneity. When the permeability discrepancy is relatively larger, CO 2 preferentially migrates along the horizontal layer without accompanying the vertical migration. For the formation controlled by gravity index, CO 2 migration is governed by supercritical gaseous characteristics. For the medium gravity index, the upward and lateral flow characteristics of the CO 2 plume is determined by gravity index and heterogeneity. When the gravity index is smaller, permeability heterogeneity is the key factor influencing CO 2 plume characteristics. Permeability heterogeneity is the decisive factor in determining final CO 2 dissolution efficiency. This investigation of CO 2 mobility in randomly multilayered reservoirs provides an effective reference for CO 2 storage.

Suggested Citation

  • Xiaoyu Fang & Yanxin Lv & Chao Yuan & Xiaohua Zhu & Junyang Guo & Weiji Liu & Haibo Li, 2023. "Effects of Reservoir Heterogeneity on CO 2 Dissolution Efficiency in Randomly Multilayered Formations," Energies, MDPI, vol. 16(13), pages 1-15, July.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:13:p:5219-:d:1188752
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    Cited by:

    1. Mrityunjay Singh & Saeed Mahmoodpour & Cornelia Schmidt-Hattenberger & Ingo Sass & Michael Drews, 2023. "Influence of Reservoir Heterogeneity on Simultaneous Geothermal Energy Extraction and CO 2 Storage," Sustainability, MDPI, vol. 16(1), pages 1-23, December.

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