氮气吸附滞后回环定量分析及其在孔隙结构表征中的指示意义
宋泽章, 阿比德·阿不拉, 吕明阳, 张月巧, 姜福杰, 刘哲宇, 郑伟, 王夏阳

Quantitative analysis of nitrogen adsorption hysteresis loop and its indicative significance to pore structure characterization:A case study on the Upper Triassic Chang 7 Member, Ordos Basin
Zezhang SONG, Abula ABIDE, Mingyang LYU, Yueqiao ZHANG, Fujie JIANG, Zheyu LIU, Wei ZHENG, Xiayang WANG
表2 鄂尔多斯盆地陇东地区长7段泥页岩样品氮气吸附实验孔隙结构参数统计
Table 2 Statistics of the pore structure parameters obtained from the low-temperature nitrogen adsorption tests of Chang 7 shale samples in Longdong area, Ordos Basin
滞后回环类型样品编号深度/m

滞后回环面积/

(mL·nm-1·g-1

DFT比表面积/

(m2·g-1

DFT比孔容/

(mL·g-1

DFT平均孔径/nm孔隙表面分形维数(D1孔隙结构分形维数(D2
A类Z221584.650.578 6813.8400.048 557.0322.5182.609
Z221626.000.565 9615.0800.048 057.0322.5332.605
Z221632.450.711 3920.2100.060 202.5832.5792.620
平均值0.618 6816.3770.052 275.5492.5432.611
B类LI2312105.900.561 169.8720.046 567.0322.4512.452
YAN563032.100.425 268.8280.043 666.0792.4502.487
YAN563058.400.742 6210.2100.051 747.0322.4452.438
平均值0.576 359.6370.047 326.7142.4492.459
C类Z221563.400.203 177.6410.038 3212.1202.5282.458
Z221569.100.143 765.6750.026 767.0322.5582.479
LI682078.900.147 538.4590.027 352.5832.6272.545
平均值0.164 827.2580.030 817.2452.5712.494