基于随机森林的火山岩岩性测井识别——以准噶尔盆地滴西地区石炭系为例

尚亚洲, 张兆辉, 许多年, 赵雯雯, 陈华勇, 韩海波

Log-based lithology identification of volcanic rocks using random forest method: A case study of Carboniferous strata in the Dixi area, Junggar Basin

SHANG Ya-Zhou, ZHANG Zhao-Hui, XU Duo-Nian, ZHAO Wen-Wen, CHEN Hua-Yong, HAN Hai-Bo

表5 不同井随机森林模型的岩性识别结果

Table 5 Lithological identification results of random forest models with different well

井号 岩性识别长度 /m 岩石薄片 钻井取心 识别正确/块 识别错误/块 准确性/% 识别正确/m 识别错误/m 准确性/% dx182 400 41 22 65.08 7.18 3.5 67.23 dx183 270 17 1 94.44 12.56 5.12 71.04 dx402 80 8 2 80.00 16.93 - 100.00 dx17 20 9 1 90.00 8.7 - 100.00 dx172 100 17 2 89.47 7.48 - 100.00 统计 870 92 28 76.67 52.85 8.62 85.98