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Energy Return on Energy Invested (EROI) for the Electrical Heating of Methane Hydrate Reservoirs

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  • Roberto Cesare Callarotti

    (Universidad del Turabo, 00778 Gurabo, Puerto Rico)

Abstract

We model the low frequency electrical heating of submarine methane hydrate deposits located at depths between 1000 and 1500 m, and determine the energy return on energy invested (EROI) for this process. By means of the enthalpy method, we calculate the time-dependent heating of these deposits under applied electrical power supplied to a cylindrical heater located at the center of the reservoir and at variable depths. The conversion of the produced water to steam is avoided by limiting the heater temperature. We calculate the volume of methane hydrate that will melt and the energy equivalent of the gas thus generated. The partial energy efficiency of this heating process is obtained as the ratio of the gas equivalent energy to the applied electrical energy. We obtain EROI values in the range of 4 to 5, depending on the location of the heater. If the methane gas is used to generate the electrical energy required in the heating (in processes with a 33% efficiency), the effective EROI of the process falls in the range of 4/3 to 5/3.

Suggested Citation

  • Roberto Cesare Callarotti, 2011. "Energy Return on Energy Invested (EROI) for the Electrical Heating of Methane Hydrate Reservoirs," Sustainability, MDPI, vol. 3(11), pages 1-10, November.
    • Handle: RePEc:gam:jsusta:v:3:y:2011:i:11:p:2105-2114:d:14699
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    Citations

    Blog mentions

    As found by EconAcademics.org, the blog aggregator for Economics research:
    1. Japan's quest to tap the natural gas beneath the ocean floor
      by Tim Minshull, Professor, Head of Ocean and Earth Sciences at University of Southampton in The Conversation on 2014-05-20 10:13:58

    Citations

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    Cited by:

    1. Zhaoyang Kong & Xiucheng Dong & Bo Xu & Rui Li & Qiang Yin & Cuifang Song, 2015. "EROI Analysis for Direct Coal Liquefaction without and with CCS: The Case of the Shenhua DCL Project in China," Energies, MDPI, vol. 8(2), pages 1-22, January.
    2. Yun-Pei Liang & Shu Liu & Qing-Cui Wan & Bo Li & Hang Liu & Xiao Han, 2018. "Comparison and Optimization of Methane Hydrate Production Process Using Different Methods in a Single Vertical Well," Energies, MDPI, vol. 12(1), pages 1-21, December.
    3. Zhao, Ermeng & Hou, Jian & Ji, Yunkai & Liu, Yongge & Bai, Yajie, 2021. "Enhancing gas production from Class II hydrate deposits through depressurization combined with low-frequency electric heating under dual horizontal wells," Energy, Elsevier, vol. 233(C).
    4. Liu, Yongge & Hou, Jian & Zhao, Haifeng & Liu, Xiaoyu & Xia, Zhizeng, 2018. "A method to recover natural gas hydrates with geothermal energy conveyed by CO2," Energy, Elsevier, vol. 144(C), pages 265-278.
    5. Li, Bo & Liu, Sheng-Dong & Liang, Yun-Pei & Liu, Hang, 2018. "The use of electrical heating for the enhancement of gas recovery from methane hydrate in porous media," Applied Energy, Elsevier, vol. 227(C), pages 694-702.
    6. Hiroaki Yaritani & Jun Matsushima, 2014. "Analysis of the Energy Balance of Shale Gas Development," Energies, MDPI, vol. 7(4), pages 1-21, April.
    7. Wan, Qing-Cui & Si, Hu & Li, Bo & Yin, Zhen-Yuan & Gao, Qiang & Liu, Shu & Han, Xiao & Chen, Ling-Ling, 2020. "Energy recovery enhancement from gas hydrate based on the optimization of thermal stimulation modes and depressurization," Applied Energy, Elsevier, vol. 278(C).

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