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1. 中国地质调查局油气资源调查中心
2. 中国地质调查局非常规油气地质重点实验室
Published:2026
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孟祥龙, 王胜建, 朱迪斯, et al. 基于TPE优化集成学习的岩石弹性模量预测模型[J]. Bulletin of Geological Science and Technology, 2026, 45(1): 342-350.
孟祥龙, 王胜建, 朱迪斯, et al. 基于TPE优化集成学习的岩石弹性模量预测模型[J]. Bulletin of Geological Science and Technology, 2026, 45(1): 342-350. DOI: 10.19509/j.cnki.dzkq.tb20240325.
油气工程中常利用地球物理资料获取地层弹性模量并结合小样本的岩心实验数据进行校正,但这种方法在复杂地质条件下往往表现不佳。为提高岩石弹性模量的预测精度和泛化能力,提出了一种利用基本岩石物性参数的弹性模量智能预测模型。分别采用3种集成学习算法(RandomForest
XGBoost
LightGBM)构建了岩石弹性模量智能预测模型,并采用TPE方法对模型进行超参数优化,最后利用SHAP归因分析探讨了各输入变量对模型的贡献。结果表明:(1)提出的智能预测模型明显优于传统模型,能够实现弹性模量的精确预测并具有较强的泛化能力,其中XGBoost模型表现最佳(决定系数R
2
=0.87,均方根误差RMSE=6.94,平均绝对误差MAE=4.96);(2)横波速度对模型贡献最大,纵波速度次之,密度最小,精确横波波速对弹性模量预测有重要意义。该方法无需对工区及地层进行预先识别即可实现弹性模量的精准预测,研究成果对油气工程设计及实施有重要参考意义。
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