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P-Y Curve Correction of Shallow Seabed Formation Containing Hydrate

Author

Listed:
  • Haoyu Diao

    (College of Petroleum Engineering, China University of Petroleum-Beijing, 18, Fuxue Road, Changping District, Beijing 102249, China)

  • Honghai Fan

    (College of Petroleum Engineering, China University of Petroleum-Beijing, 18, Fuxue Road, Changping District, Beijing 102249, China)

  • Rongyi Ji

    (College of Petroleum Engineering, China University of Petroleum-Beijing, 18, Fuxue Road, Changping District, Beijing 102249, China)

  • Bangchen Wu

    (College of Petroleum Engineering, China University of Petroleum-Beijing, 18, Fuxue Road, Changping District, Beijing 102249, China)

  • Yuguang Ye

    (College of Petroleum Engineering, China University of Petroleum-Beijing, 18, Fuxue Road, Changping District, Beijing 102249, China)

  • Yuhan Liu

    (CNPC Engineering Technology R&D Company Limited, Beijing 102206, China)

  • Fei Zhou

    (College of Petroleum Engineering, China University of Petroleum-Beijing, 18, Fuxue Road, Changping District, Beijing 102249, China)

  • Yixiang Yang

    (College of Petroleum Engineering, China University of Petroleum-Beijing, 18, Fuxue Road, Changping District, Beijing 102249, China)

  • Zhi Yan

    (College of Petroleum Engineering, China University of Petroleum-Beijing, 18, Fuxue Road, Changping District, Beijing 102249, China)

Abstract

With the continuous growth in global energy demand, the exploration and development of hydrates has been the focus of increasing attention, and the accurate evaluation of the mechanical properties of hydrate layers has become particularly important. In this study, using a self-developed hydrate sample preparation device and hydrate triaxial seepage test platform, triaxial shear tests were carried out using the in situ synthesis method for hydrate sediment in the laboratory, and the stress–strain curves of hydrate sediment with different levels of saturation were obtained. By analyzing the stress–strain curve, the mechanical parameters of hydrate sediment were calculated and simulated using ABAQUS (2021, Dassault systemes, Vélizy Villacoublay France) finite element software. Several p-y curves were calculated and compared with the simulation results, and the p-y curve correction method of the hydrate layer in a shallow seabed was obtained. It was found that the strength of the hydrate sediment increased with an increase in saturation. At the same time, an increase in confining pressure and a decrease in temperature also increased the strength of hydrate deposits. Through comparison with the existing API (American Petroleum Institute) standard p-y curve, it was found that its strength is low because the existence of the hydrate improves the formation strength.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:7:p:3274-:d:1117156
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    References listed on IDEAS

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    1. 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.
    2. E. Dendy Sloan, 2003. "Fundamental principles and applications of natural gas hydrates," Nature, Nature, vol. 426(6964), pages 353-359, November.
    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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    1. 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).

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