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Experimental Study on Methane Hydrate Dissociation by Depressurization in Porous Sediments

Author

Listed:
  • Lijun Xiong

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

  • Xiaosen Li

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

  • Yi Wang

    (Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
    Guangzhou Center for Gas Hydrate Research, Chinese Academy of Sciences, Guangzhou 510640, China
    Graduate University of Chinese Academy of Sciences, Beijing 100083, China)

  • Chungang Xu

    (Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
    Guangzhou Center for Gas Hydrate Research, Chinese Academy of Sciences, Guangzhou 510640, China
    Graduate University of Chinese Academy of Sciences, Beijing 100083, China)

Abstract

Based on currently available data from site measurements in the Shenhu Area of the South China Sea, methane hydrate dissociation behavior by depressurization is studied in a one-dimensional experimental apparatus. According to time variation of temperature, resistance and gas production, the hydrate dissociation process is divided into three stages: free gas release, rapid dissociation and gradual dissociation. The experimental results show that as the hydrate saturation increases the proportion of hydrate decomposed decreases in the rapid dissociation stage. The hydrate dissociation rate and the dissociation heat increase as the dissociation pressure decreases. Furthermore, the decrease of the dissociation pressure works against the secondary formation of the hydrate.

Suggested Citation

  • Lijun Xiong & Xiaosen Li & Yi Wang & Chungang Xu, 2012. "Experimental Study on Methane Hydrate Dissociation by Depressurization in Porous Sediments," Energies, MDPI, vol. 5(2), pages 1-13, February.
    • Handle: RePEc:gam:jeners:v:5:y:2012:i:2:p:518-530:d:16284
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    Citations

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    Cited by:

    1. Wang, Yi & Li, Xiao-Sen & Li, Gang & Zhang, Yu & Li, Bo & Feng, Jing-Chun, 2013. "A three-dimensional study on methane hydrate decomposition with different methods using five-spot well," Applied Energy, Elsevier, vol. 112(C), pages 83-92.
    2. Wang, Yi & Li, Xiao-Sen & Li, Gang & Zhang, Yu & Feng, Jing-Chun, 2014. "Experimental investigation into scaling models of methane hydrate reservoir," Applied Energy, Elsevier, vol. 115(C), pages 47-56.
    3. Koh, Dong-Yeun & Kang, Hyery & Lee, Jong-Won & Park, Youngjune & Kim, Se-Joon & Lee, Jaehyoung & Lee, Joo Yong & Lee, Huen, 2016. "Energy-efficient natural gas hydrate production using gas exchange," Applied Energy, Elsevier, vol. 162(C), pages 114-130.
    4. Qu, Aoxing & Guan, Dawei & Jiang, Zhibo & Fan, Qi & Li, Qingping & Zhang, Lunxiang & Zhao, Jiafei & Yang, Lei & Song, Yongchen, 2023. "Sensible heat aided gas production from gas hydrate with an underlying water-rich shallow gas layer," Energy, Elsevier, vol. 284(C).
    5. Cai, Jing & Lv, Tao & Zhang, Yu & von Solms, Nicolas & Xu, Chun-Gang & Chen, Zhao-Yang & Li, Xiao-Sen, 2020. "Studies on temperature characteristics and initial formation interface during cyclopentane-methane hydrate formation in large-scale equipment with bubbling," Applied Energy, Elsevier, vol. 258(C).
    6. Bo Li & Xiao-Sen Li & Gang Li & Jia-Lin Jia & Jing-Chun Feng, 2013. "Measurements of Water Permeability in Unconsolidated Porous Media with Methane Hydrate Formation," Energies, MDPI, vol. 6(7), pages 1-15, July.
    7. Guo, Xianwei & Xu, Lei & Wang, Bin & Sun, Lingjie & Liu, Yulong & Wei, Rupeng & Yang, Lei & Zhao, Jiafei, 2020. "Optimized gas and water production from water-saturated hydrate-bearing sediment through step-wise depressurization combined with thermal stimulation," Applied Energy, Elsevier, vol. 276(C).
    8. Chang-Sheng Xiang & Bao-Zi Peng & Huang Liu & Chang-Yu Sun & Guang-Jin Chen & Bao-Jiang Sun, 2013. "Hydrate Formation/Dissociation in (Natural Gas + Water + Diesel Oil) Emulsion Systems," Energies, MDPI, vol. 6(2), pages 1-14, February.
    9. Feng, Jing-Chun & Wang, Yi & Li, Xiao-Sen & Li, Gang & Zhang, Yu & Chen, Zhao-Yang, 2015. "Effect of horizontal and vertical well patterns on methane hydrate dissociation behaviors in pilot-scale hydrate simulator," Applied Energy, Elsevier, vol. 145(C), pages 69-79.
    10. Zhao, Jiafei & Zhu, Zihao & Song, Yongchen & Liu, Weiguo & Zhang, Yi & Wang, Dayong, 2015. "Analyzing the process of gas production for natural gas hydrate using depressurization," Applied Energy, Elsevier, vol. 142(C), pages 125-134.

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