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1 超参数网格搜索范围设置

Table 1 Setting of hyperparameter grid search space

参数 搜索范围 步长 网格宽度 n-estimators 100~300 20 11 max-depth 5~25,None 2 12 min-samples-split 2~12 1 11 min-samples-leaf 1~11 1 11 max-features 1/9~1 1/9 9