致密砂岩储层孔⁃喉连通性研究
秦洋,姚素平,萧汉敏

An investigation into pore⁃throat connectivity in tight sandstone reservoir: A case of the Chang 7 Reservoir in Ordos Basin
Yang Qin,Suping Yao,Hanmin Xiao
表3 致密砂岩FESEM图像PCAS提取结果
Table 3 Results of FESEM image extraction of tight sandstone by PCAS
样品编号Z?9Z?10Z124?7
图像区域168038415641651571328
区域总面积1346582987591437
区域数量165650350
区域百分比8.01%1.91%5.82%
最大区域面积2445923509900
平均区域面积81.32283.94261.25
平均周长31.4185.7875
平均形状因子0.56210.40280.4858
最大长度724.7985.9201.32
平均长度11.0326.1624.87
最大宽度7553.86125.07
平均宽度5.7514.3713.11
概率熵0.98450.86710.9831