基于沉积微相特征挖掘的随机森林岩石相测井识别方法——以新场地区须家河组二段致密砂岩为例

何小龙, 张兵, 杨凯, 何一帆, 李琢

A log-based lithofacies identification method based on random forest and sedimentary microfacies characteristics:A case study of tight sandstones in the second member of the Xujiahe Formation in the Xinchang area

HE Xiao-Long, ZHANG Bing, YANG Kai, HE Yi-Fan, LI Zhuo

表2 随机森林分类报告(含沉积微相相关参数)

Table 2 Random forest classification report(including sedimentary microfacies related parameters)

标签 精确率 召回率 F1分数 测试样本数 CMms 0.97 0.90 0.94 41 CMpl 0.82 0.88 0.85 16 CMx 0.87 0.91 0.89 22 Fms 0.84 0.89 0.86 18 Fpl 1.00 1.00 1.00 14 MS 0.94 1.00 0.97 15 S 0.95 0.90 0.93 21 加权平均 0.92 0.92 0.92 147 准确率 0.92 147