地质勘探

基于自编码器的半监督隔夹层识别方法

  • 陈雁 ,
  • 焦世祥 ,
  • 程超 ,
  • 黄成 ,
  • 蒋裕强
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  • 西南石油大学,四川 成都 610500
陈雁(1982—),女,副教授,2003年毕业于成都电子科技大学计算机科学与技术专业,2014年毕业于西南石油大学石油工程与计算专业,获博士学位,现主要从事油气智能勘探及数字油田建设等科研工作。

收稿日期: 2019-10-29

  修回日期: 2020-10-03

  网络出版日期: 2021-04-27

基金资助

国家自然科学基金“基于特征提取与分层建模的社交网络信息传播预测研究”(61503312);四川省科技厅项目“海相页岩气建产核心区智能评价系统研究(省重)”(19YYJC);南充市市校科技战略合作项目“智能舆情分析技术研究”(18SXHZ0010);西南石油大学2018年高等教育教学改革研究一般项目“新工科背景下的嵌入式课程‘AI+’教学新模式的探索与实践”(X2018JGYB041)

Semi-Supervised Interlayer Identification Method Based on Self-Encoder

  • Chen Yan ,
  • Jiao Shixiang ,
  • Cheng Chao ,
  • Huang Cheng ,
  • Jiang Yuqiang
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  • Southwest Petroleum University, Chengdu, Sichuan 610500 China

Received date: 2019-10-29

  Revised date: 2020-10-03

  Online published: 2021-04-27

摘要

针对岩心标定的隔夹层数据少且隔夹层与砂岩样本分布不均衡等问题,运用深度自编码器以及半监督学习方法,通过计算异常得分,并将异常得分情况赋予分类置信度,根据分类置信度得到隔夹层的分类结果,并对模型进行更新。研究结果表明,采用更新算法的深度自编码器模型在隔夹层识别中效果明显,综合分类准确率均达到了85.00%,且相较于其他分类算法,最优模型AE7&UP的F1_score最高,为84.15%,说明模型的识别效果好且均衡。研究成果对重构地下流体认知体系具有重要意义。

本文引用格式

陈雁 , 焦世祥 , 程超 , 黄成 , 蒋裕强 . 基于自编码器的半监督隔夹层识别方法[J]. 特种油气藏, 2021 , 28(1) : 86 -91 . DOI: 10.3969/j.issn.1006-6535.2021.01.012

Abstract

In order to solve the problems such as few interlayer data calibrated by core and unbalanced distribution of interlayers and sandstone samples, the deep self-encoder and semi-supervised learning method were used to calculate the abnormal scores and give the classification confidence to the abnormal scores. According to the classification confidence, the classification results of the interlayers were obtained, and the model was updated. The research results show that the deep self-encoder model using the update algorithm is effective in the interlayer identification, and the comprehensive classification accuracy reaches 85.00%. In addition, compared with other classification algorithms, the optimal model of AE7&UP has the highest F1_score (84.15%), indicating that the identification effect of the model is good and balanced. The research results are of great significance to reconstruct the cognition system of underground fluids.

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