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Fundamental characteristics of gas hydrate-bearing sediments in the Shenhu area, South China Sea

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Abstract

The basic physical properties of marine natural gas hydrate deposits are important to the understanding of seabed growth conditions, occurrence regularity, and occurrence environment of natural gas hydrates. A comprehensive analysis of the core samples of drilling pressure-holding hydrate deposits at a depth of 1310 m in the Shenhu area of the South China Sea was conducted. The experimental results indicate that the particle size in the hydrate sediment samples are mainly distributed in the range from 7.81 µm to 21.72 µm, and the average particle size decreases as the depth of the burial increases. The X-ray CT analytical images and surface characteristics SEM scan images suggest that the sediment is mostly silty clay. There are a large number of bioplastics in the sediment, and the crack inside the core may be areas of hydrate formation.

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Authors and Affiliations

  1. China National Offshore Oil Corporation Research Institute Co. Ltd, Beijing, 100028, China

    Xin Lyu, Qingping Li, Yang Ge & Junlong Zhu

  2. State Key Laboratory of Natural Gas Hydrate, Beijing, 100028, China

    Xin Lyu, Qingping Li, Yang Ge, Junlong Zhu, Shouwei Zhou & Qiang Fu

  3. China National Offshore Oil Corporation, Beijing, 100021, China

    Shouwei Zhou & Qiang Fu

Authors
  1. Xin Lyu
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  2. Qingping Li
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  3. Yang Ge
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  4. Junlong Zhu
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  5. Shouwei Zhou
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  6. Qiang Fu
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Correspondence to Qingping Li.

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Lyu, X., Li, Q., Ge, Y. et al. Fundamental characteristics of gas hydrate-bearing sediments in the Shenhu area, South China Sea. Front. Energy 15, 367–373 (2021). https://doi.org/10.1007/s11708-020-0714-z

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  • DOI: https://doi.org/10.1007/s11708-020-0714-z

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