利用核磁共振资料定量评价页岩孔隙结构

孟昆,王胜建,薛宗安,侯瑞卿,肖亮

Quantitative Evaluation of Shale Pore Structure Using Nuclear Magnetic Resonance Data

Kun MENG,Sheng-jian WANG,Zong-an XUE,Rui-qing HOU,Liang XIAO

表3 20块页岩样品三类孔隙结构的NMR孔隙度、T50，以及孔隙比例的分布范围和平均值

Table 3 The distribution ranges and average values of NMR porosity, T50 and pore ratio of the three types of pore structures in 20 shale samples

类型 Φ-nmr/% T50/ms 微孔/% 中孔% 宏孔/% Ⅰ 1.07~2.56 0.344~0.769 0.338~1.105 44.567~59.893 39.394~55.065 1.89 0.514 0.596 52.704 46.700 Ⅱ 0.86~2.10 0.253~0.421 0.252~1.026 57.065~66.570 32.595~42.684 1.55 0.313 0.684 62.829 36.487 Ⅲ 0.89~3.17 0.102~0.210 0.589~2.348 59.503~87.002 11.037~39.165 1.79 0.152 1.394 75.731 22.875