Abstract The pore size distribution of four shale samples were characterized by and compared between CO2 adsorption, N2 adsorption, MIP and NMR. The results show that CO2 adsorption has an absolute advantage for characterization of pores smaller than 2 nm. N2 adsorption is reliable for 2–50 nm pore characterization and is superior to NMR in the 2–10 nm range. NMR has advantages for 10–100 nm pore characterization, and MIP has advantages for characterization of pores larger than 100 nm. NMR offers the widest range of observations, and order of the maximum resolution of these methods is CO2 adsorption > N2 adsorption > NMR > MIP.

中文翻译：

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页岩孔径表征方法对比分析

摘要 通过CO2吸附、N2吸附、MIP和NMR对四种页岩样品的孔径分布进行表征和比较。结果表明，CO2 吸附在表征小于 2 nm 的孔隙方面具有绝对优势。N2 吸附对于 2-50 nm 孔隙表征是可靠的，并且在 2-10 nm 范围内优于 NMR。NMR 在 10-100 nm 孔隙表征方面具有优势，而 MIP 在表征大于 100 nm 的孔隙方面具有优势。NMR 提供了最广泛的观察范围，这些方法的最大分辨率顺序是 CO2 吸附 > N2 吸附 > NMR > MIP。