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Quantifying nano-pore heterogeneity and anisotropy in gas shale by synchrotron radiation nano-CT

  • [设施]:北京正负电子对撞机
  • [期刊/会议名称]:Microporous and Mesoporous Materials
  • [摘要]:As a tight reservoir, the majority of the pores in shale are nano pores. Compared to conventional reservoirs, the pore structure of shale presents strong heterogeneity and anisotropy. Quantitative characterization of nano-pore heterogeneity and anisotropy is of great significance for accurate assessment of gas reservoir capacity and the optimization of gas wells layout. In order to quantitatively characterize nano-pore heterogeneity and anisotropy in gas shale, experimental and images processing methods for gas shale nano-pore structure characterization by synchrotron radiation nano-CT were explored. The proposed method for quantitative characterization of nano-pore heterogeneity is independent of pore structure testing approach and sub-volumes number. Nano-pore anisotropy characteristics were quantitatively characterized by the eigenvalues and eigenvectors of permeability tensor, which was consistent with nano-pore geometrical morphology. Experimental and images processing methods in this paper can be references for other porous materials characterization by synchrotron radiation nano-CT. Methods for quantitative characterization of pores heterogeneity and anisotropy proposed in this paper are applicable for other porous media.
  • [发表日期]:2018
  • [第一作者]:孙英峰
  • [第一作者单位]:中国矿业大学(北京)
  • [通讯作者]:赵毅鑫
  • [通讯作者单位]:中国矿业大学(北京)
  • [论文类型]:0
  • [期刊分类]:SCI2区
  • [学科分类]:工程学
  • [影响因子]:3.66
  • [关键词]:Nano-pore, Synchrotron radiation nano-CT, Heterogeneity, Anisotropy
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