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Relationship between Creep Property and Loading-Rate Dependence of Strength of Artificial Methane-Hydrate-Bearing Toyoura Sand under Triaxial Compression

Author

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  • Kuniyuki Miyazaki

    (Institute for Geo-Resources and Environment, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8567, Japan)

  • Norio Tenma

    (Research Institute of Energy Frontier, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8569, Japan)

  • Tsutomu Yamaguchi

    (Department of Environmental Science, Toho University, Funabashi 274-8510, Japan)

Abstract

Methane hydrate is anticipated to be a promising energy resource. It is essential to consider the mechanical properties of a methane hydrate reservoir to ensure sustainable production, since its mechanical behavior may affect the integrity of the production well, the occurrence of geohazards, and gas productivity. In particular, the creep property of methane-hydrate-bearing sediment is thought to have great significance in the long-term prediction of the mechanical behaviors of a reservoir. In earlier studies, triaxial compression tests were conducted on artificial methane-hydrate-bearing Toyoura sand under three axial-loading conditions, i.e., constant-strain-rate test, constant-stress-rate test, and creep (constant-stress) test. In this paper, the time-dependent properties of the methane-hydrate-bearing Toyoura sand observed in these tests were quantitatively discussed and found to be almost in agreement. The creep life obtained from the creep tests had a reasonably strong correlation with the loading-rate dependencies of strength, obtained from the constant-strain-rate tests and constant-stress-rate tests based on a simple hypothesis. The findings are expected to be used to develop a constitutive model considering the time-dependent behaviors of hydrate-bearing soil in future studies, and to improve the reliability of long-term prediction of the geomechanical response to gas extraction from a reservoir.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:10:p:1466-:d:112814
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    References listed on IDEAS

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    1. Kuniyuki Miyazaki & Norio Tenma & Kazuo Aoki & Tsutomu Yamaguchi, 2012. "A Nonlinear Elastic Model for Triaxial Compressive Properties of Artificial Methane-Hydrate-Bearing Sediment Samples," Energies, MDPI, vol. 5(10), pages 1-19, October.
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    2. 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.
    3. Bohan Zhou & Marcelo Sanchez & Luciano Oldecop & J. Carlos Santamarina, 2022. "A Geomechanical Model for Gas Hydrate Bearing Sediments Incorporating High Dilatancy, Temperature, and Rate Effects," Energies, MDPI, vol. 15(12), pages 1-23, June.
    4. 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).
    5. 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).
    6. Haoyu Diao & Honghai Fan & Rongyi Ji & Bangchen Wu & Yuguang Ye & Yuhan Liu & Fei Zhou & Yixiang Yang & Zhi Yan, 2023. "P-Y Curve Correction of Shallow Seabed Formation Containing Hydrate," Energies, MDPI, vol. 16(7), pages 1-21, April.

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