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Suitability and Potential Evaluation of Carbon Dioxide Geological Storage: Case Study of Dezhou Subdepression

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  • Zhizheng Liu

    (Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China)

  • Lin Ye

    (Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China)

  • Hao Liu

    (Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China)

  • Chao Jia

    (Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China)

  • Henghua Zhu

    (Shandong Institute of Geological Survey, Jinan 250014, China)

  • Zeyu Li

    (Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China)

  • Huafeng Liu

    (Shandong Institute of Geological Survey, Jinan 250014, China)

Abstract

Under the dual-carbon policy framework, geological CO 2 storage, particularly in saline aquifers, is pivotal to achieving national emission reduction targets. However, selecting geologically favorable storage sites demands quantitative assessment of complex geological factors—a task hindered by subjective traditional methods. To address this, the study employs an integrated approach combining multi-criteria decision analysis (Analytic Hierarchy Process and Fuzzy Comprehensive Evaluation) with multiphase flow simulations to investigate the Dezhou Subdepression in Shandong Province. The results indicate that the Dezhou Subdepression is moderately favorable for CO 2 geological storage, characterized by geologically optimal burial depth and favorable reservoir conditions. When the injection pressure increases from 1.1 times the original Group pressure (1.1P) to 1.5 times the original Group pressure (1.5P), the lateral migration distance of CO 2 expands by 240%, and the total storage capacity increases by approximately 275%. However, under 1.5P conditions, the CO 2 plume reaches the model boundary within 6.3 years, underscoring the increased risk of CO 2 leakage under high-pressure injection scenarios. This study provides strategic insights for policymakers and supports strategic planning for a CO 2 storage pilot project in the Dezhou Subdepression. It also serves as a reference framework for future assessments of CO 2 geological storage potential.

Suggested Citation

  • Zhizheng Liu & Lin Ye & Hao Liu & Chao Jia & Henghua Zhu & Zeyu Li & Huafeng Liu, 2025. "Suitability and Potential Evaluation of Carbon Dioxide Geological Storage: Case Study of Dezhou Subdepression," Sustainability, MDPI, vol. 17(13), pages 1-23, June.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:13:p:5860-:d:1687372
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    References listed on IDEAS

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    1. Jianqiang Wang & Yong Yuan & Jianwen Chen & Wei Zhang & Jian Zhang & Jie Liang & Yinguo Zhang, 2023. "Geological Conditions and Suitability Evaluation for CO 2 Geological Storage in Deep Saline Aquifers of the Beibu Gulf Basin (South China)," Energies, MDPI, vol. 16(5), pages 1-20, March.
    2. Tomasz Topór & Małgorzata Słota-Valim & Rafał Kudrewicz, 2023. "Assessing the Geothermal Potential of Selected Depleted Oil and Gas Reservoirs Based on Geological Modeling and Machine Learning Tools," Energies, MDPI, vol. 16(13), pages 1-19, July.
    3. Fugang Wang & Jing Jing & Tianfu Xu & Yanlin Yang & Guangrong Jin, 2016. "Impacts of stratum dip angle on CO 2 geological storage amount and security," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 6(5), pages 682-694, October.
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