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<p>In order to select calculation methods to accurately characterize the pore size distribution of shale microporous and mesoporous, 3 synthesized standard samples were chosen for this study to perform contrastive analysis of results of the BJH adsorption method, the BJH desorption method and NLDFT method. The research shows that the NLDFT method is preferred to characterize pore size distribution of shale samples with both mesoporous and microporous. When the BJH adsorption method or BJH desorption method is used to calculate the shale pore size distribution, the microporous will be ignored, which allows the methane adsorption capacity of the shale sample to be significantly underestimated.</p>

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Model Applicability of Characterizing Shale Pore Structure by Low-Pressure Nitrogen Adsorption Method

  • 期刊论文

  • 发表日期：

    2026年3月1日

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  • Wanqi Liu,
  • Dan Lin,
  • Shaomin Hu,
  • Dan Zheng,
  • Ming Tang,
  • Ying Wang

摘要

In order to select calculation methods to accurately characterize the pore size distribution of shale microporous and mesoporous, 3 synthesized standard samples were chosen for this study to perform contrastive analysis of results of the BJH adsorption method, the BJH desorption method and NLDFT method. The research shows that the NLDFT method is preferred to characterize pore size distribution of shale samples with both mesoporous and microporous. When the BJH adsorption method or BJH desorption method is used to calculate the shale pore size distribution, the microporous will be ignored, which allows the methane adsorption capacity of the shale sample to be significantly underestimated.