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The mechanism of the terahertz spectroscopy for oil shale detection

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  • Zhan, Honglei
  • Chen, Mengxi
  • Zhao, Kun
  • Li, Yizhang
  • Miao, Xinyang
  • Ye, Haimu
  • Ma, Yue
  • Hao, Shijie
  • Li, Hongfang
  • Yue, Wenzheng

Abstract

Terahertz time domain spectroscopy (THz-TDS) can directly detect oil shales. The absorption coefficient is related to the oil content in the rock. This value can be compared across regions to measuring the oil content in the oil shale. Here we studied three regions and included scanning electron microscope (SEM) and thermogravimetric analysis (TGA) to verify the amount of kerogen within oil shale prior to the constitution of the mineral matrix via the THz response. Aromatic and the aliphatic compounds contribute to the absorption of shales in the THz range due to the relatively high intramolecular interactions—this reveals the mechanism of THz radiation penetration through shales as reported in previous reports. The differences in quantum structure of a molecule between organic and inorganic materials suggest that THz-TDS can be applied to geophysical prospecting and improve the effectiveness of the detection of organics in oil shale.

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  • Zhan, Honglei & Chen, Mengxi & Zhao, Kun & Li, Yizhang & Miao, Xinyang & Ye, Haimu & Ma, Yue & Hao, Shijie & Li, Hongfang & Yue, Wenzheng, 2018. "The mechanism of the terahertz spectroscopy for oil shale detection," Energy, Elsevier, vol. 161(C), pages 46-51.
    • Handle: RePEc:eee:energy:v:161:y:2018:i:c:p:46-51
    DOI: 10.1016/j.energy.2018.07.112
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    References listed on IDEAS

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    Cited by:

    1. Zhan, Honglei & Qin, Fankai & Chen, Sitong & Chen, Ru & Meng, Zhaohui & Miao, Xinyang & Zhao, Kun, 2022. "Two-step pyrolysis degradation mechanism of oil shale through comprehensive analysis of pyrolysis semi-cokes and pyrolytic gases," Energy, Elsevier, vol. 241(C).
    2. Zhan, Honglei & Yang, Qi & Qin, Fankai & Meng, Zhaohui & Chen, Ru & Miao, Xinyang & Zhao, Kun & Yue, Wenzheng, 2022. "Comprehensive preparation and multiscale characterization of kerogen in oil shale," Energy, Elsevier, vol. 252(C).
    3. Zhan, Honglei & Wang, Yan & Chen, Mengxi & Chen, Ru & Zhao, Kun & Yue, Wenzheng, 2020. "An optical mechanism for detecting the whole pyrolysis process of oil shale," Energy, Elsevier, vol. 190(C).

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