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Gas-Lifting Characteristics of Methane-Water Mixture and Its Potential Application for Self-Eruption Production of Marine Natural Gas Hydrates

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  • Jinming Zhang

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

  • Xiaosen Li

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

  • Zhaoyang Chen

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

  • Yu Zhang

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

  • Gang Li

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

  • Kefeng Yan

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

  • Tao Lv

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

Abstract

A gas-lifting production method was firstly proposed to transport the methane-water mixture from natural gas hydrates deposits through marine vertical pipe in this work. Aiming at UBGH2-6 site, SH7 site and GMGS2-8 site, the gas-lifting performance of methane-water mixture in the vertical pipe was investigated by numerical calculation. The potential of Natural gas hydrates (NGH) self-eruption production induced by the gas-lifting process under ideal conditions was also studied based on the energy analysis. The calculation results indicate that the gas-lifting method has great advantage in avoiding the secondary hydrates formation in marine vertical pipe and reducing energy consumption. The gas-lifting process in the vertical pipe is testified to be spontaneous in UBGH2-6 site and SH7 site during the initial 4000 and 1000 days, respectively, which indicates the energy consumption for methane-water mixture transportation is saved. Sufficient heat supply for the hydrate dissociation is crucial for the NGH self-eruption production. Sensitivity analysis indicates that the water-gas ratio has more significant influences on gas-lifting performance in the vertical pipe compared to the flow rate. With the decrease of water-gas ratio, the bottomhole pressure decreases rapidly. Thus, the reduction of water production is effective to improve the gas-lifting performance.

Suggested Citation

  • Jinming Zhang & Xiaosen Li & Zhaoyang Chen & Yu Zhang & Gang Li & Kefeng Yan & Tao Lv, 2018. "Gas-Lifting Characteristics of Methane-Water Mixture and Its Potential Application for Self-Eruption Production of Marine Natural Gas Hydrates," Energies, MDPI, vol. 11(1), pages 1-22, January.
  • Handle: RePEc:gam:jeners:v:11:y:2018:i:1:p:240-:d:127847
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    References listed on IDEAS

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    1. Li, Xiao-Sen & Yang, Bo & Zhang, Yu & Li, Gang & Duan, Li-Ping & Wang, Yi & Chen, Zhao-Yang & Huang, Ning-Sheng & Wu, Hui-Jie, 2012. "Experimental investigation into gas production from methane hydrate in sediment by depressurization in a novel pilot-scale hydrate simulator," Applied Energy, Elsevier, vol. 93(C), pages 722-732.
    2. Yi Wang & Jing-Chun Feng & Xiao-Sen Li & Yu Zhang & Gang Li, 2016. "Evaluation of Gas Production from Marine Hydrate Deposits at the GMGS2-Site 8, Pearl River Mouth Basin, South China Sea," Energies, MDPI, vol. 9(3), pages 1-22, March.
    3. Feng, Jing-Chun & Wang, Yi & Li, Xiao-Sen & Chen, Zhao-Yang & Li, Gang & Zhang, Yu, 2015. "Investigation into optimization condition of thermal stimulation for hydrate dissociation in the sandy reservoir," Applied Energy, Elsevier, vol. 154(C), pages 995-1003.
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    Cited by:

    1. Liping Tang & Wei He & Xiaohua Zhu & Yunlai Zhou, 2019. "Sealing Performance Analysis of an End Fitting for Marine Unbonded Flexible Pipes Based on Hydraulic-Thermal Finite Element Modeling," Energies, MDPI, vol. 12(11), pages 1-14, June.
    2. Na Wei & Wantong Sun & Yingfeng Meng & Jinzhou Zhao & Bjørn Kvamme & Shouwei Zhou & Liehui Zhang & Qingping Li & Yao Zhang & Lin Jiang & Haitao Li & Jun Pei, 2020. "Hydrate Formation and Decomposition Regularities in Offshore Gas Reservoir Production Pipelines," Energies, MDPI, vol. 13(1), pages 1-22, January.

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