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Creep Behaviors of Methane Hydrate-Bearing Frozen Sediments

Author

Listed:
  • Yanghui Li

    (Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China)

  • Peng Wu

    (Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China)

  • Xiang Sun

    (Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China
    Department of Civil and Environmental Engineering, University of California, Berkeley, CA 94720, USA)

  • Weiguo Liu

    (Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China)

  • Yongchen Song

    (Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China)

  • Jiafei Zhao

    (Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China)

Abstract

Creep behaviors of methane hydrate-bearing frozen specimens are important to predict the long-term stability of the hydrate-bearing layers in Arctic and permafrost regions. In this study, a series of creep tests were conducted, and the results indicated that: (1) higher deviator stress (external load) results in larger initial strain, axial strain, and strain rate at a specific elapsed time. Under low deviator stress levels, the axial strain is not large and does not get into the tertiary creep stage in comparison with that under high deviator stress, which can be even up to 35% and can cause failure; (2) both axial strain and strain rate of methane hydrate-bearing frozen specimens increase with the enhancement of deviator stress, the decrease of confining pressure, and the decrease of temperature; (3) the specimens will be damaged rather than in stable creep stage during creeping when the deviator stress exceeds the quasi-static strength of the specimens.

Suggested Citation

  • Yanghui Li & Peng Wu & Xiang Sun & Weiguo Liu & Yongchen Song & Jiafei Zhao, 2019. "Creep Behaviors of Methane Hydrate-Bearing Frozen Sediments," Energies, MDPI, vol. 12(2), pages 1-17, January.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:2:p:251-:d:197881
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    References listed on IDEAS

    as
    1. Li, Yanghui & Liu, Weiguo & Zhu, Yiming & Chen, Yunfei & Song, Yongchen & Li, Qingping, 2016. "Mechanical behaviors of permafrost-associated methane hydrate-bearing sediments under different mining methods," Applied Energy, Elsevier, vol. 162(C), pages 1627-1632.
    2. Kuniyuki Miyazaki & Norio Tenma & Tsutomu Yamaguchi, 2017. "Relationship between Creep Property and Loading-Rate Dependence of Strength of Artificial Methane-Hydrate-Bearing Toyoura Sand under Triaxial Compression," Energies, MDPI, vol. 10(10), pages 1-15, September.
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    Cited by:

    1. Wang, Lei & Shen, Shi & Wu, Zhaoran & Wu, Dejun & Li, Yanghui, 2024. "Strength and creep characteristics of methane hydrate-bearing clayey silts of the South China Sea," Energy, Elsevier, vol. 294(C).
    2. Li, Yanghui & Hu, Wenkang & Tang, Haoran & Wu, Peng & Liu, Tao & You, Zeshao & Yu, Tao & Song, Yongchen, 2023. "Mechanical properties of the interstratified hydrate-bearing sediment in permafrost zones," Energy, Elsevier, vol. 282(C).
    3. Tang, Jizhou & Zhang, Min & Guo, Xuyang & Geng, Jianhua & Li, Yuwei, 2024. "Investigation of creep and transport mechanisms of CO2 fracturing within natural gas hydrates," Energy, Elsevier, vol. 300(C).
    4. Li, Yanghui & Wang, Le & Xie, Yao & Wu, Peng & Liu, Tao & Huang, Lei & Zhang, Shuheng & Song, Yongchen, 2023. "Deformation characteristics of methane hydrate-bearing clayey and sandy sediments during depressurization dissociation," Energy, Elsevier, vol. 275(C).
    5. Aminnaji, Morteza & Qureshi, M Fahed & Dashti, Hossein & Hase, Alfred & Mosalanejad, Abdolali & Jahanbakhsh, Amir & Babaei, Masoud & Amiri, Amirpiran & Maroto-Valer, Mercedes, 2024. "CO2 gas hydrate for carbon capture and storage applications – Part 2," Energy, Elsevier, vol. 300(C).

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