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Tri-Axial Shear Tests on Hydrate-Bearing Sediments during Hydrate Dissociation with Depressurization

Author

Listed:
  • Dongliang Li

    (Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
    CAS Key Laboratory of Gas Hydrate, Guangzhou 510640, China
    Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
    Guangzhou Center for Gas Hydrate Research, Chinese Academy of Sciences, Guangzhou 510640, China)

  • Qi Wu

    (Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
    CAS Key Laboratory of Gas Hydrate, Guangzhou 510640, China
    Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
    Guangzhou Center for Gas Hydrate Research, Chinese Academy of Sciences, Guangzhou 510640, China)

  • Zhe Wang

    (Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
    CAS Key Laboratory of Gas Hydrate, Guangzhou 510640, China
    Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
    Guangzhou Center for Gas Hydrate Research, Chinese Academy of Sciences, Guangzhou 510640, China)

  • Jingsheng Lu

    (Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
    CAS Key Laboratory of Gas Hydrate, Guangzhou 510640, China
    Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
    Guangzhou Center for Gas Hydrate Research, Chinese Academy of Sciences, Guangzhou 510640, China)

  • Deqing Liang

    (Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
    CAS Key Laboratory of Gas Hydrate, Guangzhou 510640, China
    Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
    Guangzhou Center for Gas Hydrate Research, Chinese Academy of Sciences, Guangzhou 510640, China)

  • Xiaosen Li

    (Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
    CAS Key Laboratory of Gas Hydrate, Guangzhou 510640, China
    Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
    Guangzhou Center for Gas Hydrate Research, Chinese Academy of Sciences, Guangzhou 510640, China)

Abstract

A series of tri-axial shear tests were carried out to determine the stress and strain characteristics, as well as the volume deformation of methane hydrate-bearing sediments during gas hydrate dissociation. An innovative type of depressurization was adopted with a high-pressure and low-temperature tri-axial apparatus. Results show that: (1) decrease in pore pressure during the shear process may result in the failure of hydrate-bearing sediments, but they did not collapse completely due to high effective confining pressure; (2) depressurization leads to the contraction of volumetric strain and the ultimate deformation shows no difference compared to that prior depressurization; (3) high saturation hydrate-bearing sediments were more sensitive to depressurization, which could be due to the methane hydrate acting as a skeleton structure at some sites when the pore hydrates’ saturation is high.

Suggested Citation

  • Dongliang Li & Qi Wu & Zhe Wang & Jingsheng Lu & Deqing Liang & Xiaosen Li, 2018. "Tri-Axial Shear Tests on Hydrate-Bearing Sediments during Hydrate Dissociation with Depressurization," Energies, MDPI, vol. 11(7), pages 1-12, July.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:7:p:1819-:d:157453
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    References listed on IDEAS

    as
    1. Yanghui Li & Yongchen Song & Weiguo Liu & Feng Yu, 2012. "Experimental Research on the Mechanical Properties of Methane Hydrate-Ice Mixtures," Energies, MDPI, vol. 5(2), pages 1-12, January.
    2. 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.
    3. Chong, Zheng Rong & Yang, She Hern Bryan & Babu, Ponnivalavan & Linga, Praveen & Li, Xiao-Sen, 2016. "Review of natural gas hydrates as an energy resource: Prospects and challenges," Applied Energy, Elsevier, vol. 162(C), pages 1633-1652.
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    Cited by:

    1. Jingsheng Lu & Dongliang Li & Yong He & Lingli Shi & Deqing Liang & Youming Xiong, 2019. "Experimental Study of Sand Production during Depressurization Exploitation in Hydrate Silty-Clay Sediments," Energies, MDPI, vol. 12(22), pages 1-14, November.
    2. Dongliang Li & Zhe Wang & Deqing Liang & Xiaoping Wu, 2019. "Effect of Clay Content on the Mechanical Properties of Hydrate-Bearing Sediments during Hydrate Production via Depressurization," Energies, MDPI, vol. 12(14), pages 1-14, July.
    3. Xiao-Hui Wang & Qiang Xu & Ya-Nan He & Yun-Fei Wang & Yi-Fei Sun & Chang-Yu Sun & Guang-Jin Chen, 2019. "The Acoustic Properties of Sandy and Clayey Hydrate-Bearing Sediments," Energies, MDPI, vol. 12(10), pages 1-11, May.
    4. Maria De La Fuente & Jean Vaunat & Héctor Marín-Moreno, 2019. "Thermo-Hydro-Mechanical Coupled Modeling of Methane Hydrate-Bearing Sediments: Formulation and Application," Energies, MDPI, vol. 12(11), pages 1-23, June.

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