以改进的Adaboost-WOA-BP模型建立页岩储层的总有机碳含量预测方法: 以四川盆地龙马溪组X地区页岩储层为例
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P631

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国家科技重大专项下属任务(2016ZX05002-004-009)


Establishment of Total Organic Carbon Prediction Method for Shale Reservoirs Using Improved Adaboost-WOA-BP Model: A Case Study of X Area in Longmaxi Formation, Sichuan Basin
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    摘要:

    页岩储层总有机碳含量(total organic carbon,TOC)是页岩生烃潜力及页岩气富集程度的重要参数,其精确预测对油 气勘探开发具有重要意义。 常规的线性回归方法受到地区以及测井资料之间复杂的非线性关系的影响,存在预测精度有限 的问题。 为此提出一种 Adaboost-WOA-BP 预测模型来进行 TOC 含量的预测,将 WOA(whale optimization algorithm)算法优化过 的 BP(backpropagation)神经网络作为 Adaboost(adaptive boosting)算法的弱学习器,集成多个弱学习器进而构建一个强的学习 器。 优选自然伽马、密度、声波时差等与计算 TOC 含量相关的敏感测井参数作为预测模型的输入,通过与常规线性回归方法、 BP 神经网络、WOA-BP 神经网络这 3 种方法进行对比,Adaboost-WOA-BP 模型具有更高的 TOC 含量预测精度,预测 TOC 与实 测 TOC 符合率达到 95% 。

    Abstract:

    The total organic carbon content in shale reservoirs is a crucial parameter for assessing hydrocarbon generation potential and shale gas enrichment. Accurate prediction of TOC( total organic carbon) is essential for oil and gas exploration and development. Conventional linear regression methods are limited in their predictive accuracy due to the complex nonlinear relationships among regional and well logging data. To address this issue, a prediction model based on Adaboost-WOA-BP was proposed for predicting TOC content. This model integrates WOA( whale optimization algorithm) optimized Backpropagation neural networks as weak learners within the Adaboost framework to construct a strong learner. Use of optimal natural gamma, density, acoustic time difference, and other sensitive logging parameters associated with TOC content calculation as inputs for the prediction model. Compared to conventional linear regression, BP neural networks and WOA-BP neural networks, the Adaboost-WOA-BP model demonstrates higher predictive accuracy, achieving a 95% match between predicted and measured TOC values.

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陈甄明,谢锐杰,彭宏昶,等. 以改进的Adaboost-WOA-BP模型建立页岩储层的总有机碳含量预测方法: 以四川盆地龙马溪组X地区页岩储层为例[J]. 科学技术与工程, 2025, 25(2): 494-501.
Chen Zhenming, Xie Ruijie, Peng Hongchang, et al. Establishment of Total Organic Carbon Prediction Method for Shale Reservoirs Using Improved Adaboost-WOA-BP Model: A Case Study of X Area in Longmaxi Formation, Sichuan Basin[J]. Science Technology and Engineering,2025,25(2):494-501.

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历史
  • 收稿日期:2024-04-19
  • 最后修改日期:2024-11-10
  • 录用日期:2024-05-22
  • 在线发布日期: 2025-01-21
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