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Xuezhen Wu, Gaoqiang Guo, Hongyu Ye, Yuanbing Miao and Dayong Li
The horizontal well technology was successfully applied in the Chinese second natural gas hydrate (NGH) field test in the Shenhu area of the South China Sea in 2020. However, the results show that the threshold for commercial exploitation has not been br...
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Hongyu Ye, Xuezhen Wu, Gaoqiang Guo, Dayong Li and Yujing Jiang
Natural gas hydrate (NGH) dissociation is a heat-absorbing process, and the cooling around the wellhead is more pronounced during depressurization production. Low temperature will cause NGH regeneration or ice formation, blocking gas flow paths and reduc...
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Xuezhen Wu, Yujing Jiang, Jianhua Wang, Kusaba Masaya, Tetsuya Taniguchi and Takahide Yamato
The stability assessment of aged tunnel linings are mainly evaluated based on the visual inspection, and the Tunnel-lining Crack Index (TCI) is one of the most widely used tunnel lining health assessment indexes in Japan. However, the intersection and di...
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