Article(id=1322942036726395369, tenantId=1146029695717560320, journalId=1322258508890079423, issueId=1322941842395889747, articleNumber=null, orderNo=null, doi=10.13809/j.cnki.cn32-1825/te.2024626, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1738771200000, receivedDateStr=2025-02-06, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793343560629, onlineDateStr=2026-10-30, pubDate=1784995200000, pubDateStr=2026-07-26, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793343560629, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793343560629, creator=13701087609, updateTime=1793343560629, updator=13701087609, issue=Issue{id=1322941842395889747, tenantId=1146029695717560320, journalId=1322258508890079423, year='2026', volume='16', issue='4', pageStart='737', pageEnd='948', issueExtLink='null', onlineDate='null', pubDate='1784995200000', pubDateStr='2026-07-26', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793343514297, creator='13701087609', updateTime=1793344192960, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322944689019695905, tenantId=1146029695717560320, journalId=1322258508890079423, issueId=1322941842395889747, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322944689019695906, tenantId=1146029695717560320, journalId=1322258508890079423, issueId=1322941842395889747, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=899, endPage=912, ext={EN=ArticleExt(id=1322942036982247914, articleId=1322942036726395369, tenantId=1146029695717560320, journalId=1322258508890079423, language=EN, title=Sandstone diagenetic facies logging identification based on multilayer perceptron: A case study of Lufeng Sag in Pearl River Mouth Basin, columnId=1322941869210075380, journalTitle=Petroleum Reservoir Evaluation and Development, columnName=Digital and Intelligent Energy, runingTitle=null, highlight=

The characteristics of sandstone diagenetic facies are complex and diverse. Taking the Eocene sandstones in the Lufeng Sag of the Pearl River Mouth Basin as the research object, it is of great significance to establish an accurate method for the classification and identification of sandstone diagenetic facies. To accurately classify the diagenetic facies, quantitative parameters including apparent compaction ratio, apparent cementation ratio, apparent dissolution ratio, and dissolved grain area ratio were introduced. Image processing techniques such as edge detection and threshold segmentation were applied to extract the content of each component from cast thin sections, thereby systematically characterizing the intensity differences of compaction, cementation, and dissolution. Based on intensity differences of diagenesis, a total of 7 diagenetic facies types were identified and further grouped into three classes. Class I diagenetic facies (including weak compaction, weak cementation, strong dissolution; and weak compaction, weak cementation, weak dissolution) exhibited the best physical properties and pore structures, with porosity greater than 13%, mainly dominated by macropores. Class II diagenetic facies (including weak compaction, strong cementation, strong dissolution; and weak compaction, strong cementation, weak dissolution) had intermediate physical properties, with porosity ranging from 9% to 13%. Class III diagenetic facies (including strong compaction, weak cementation, weak dissolution; strong compaction, strong cementation, strong dissolution; and strong compaction, strong cementation, weak dissolution) had the poorest physical properties, with porosity lower than 10%, mainly dominated by micropores. On this basis, a multilayer perceptron (MLP) neural network model was established by combining conventional logging curves (natural gamma ray, interval transit time, compensated neutron log, compensated density log, and resistivity) along with the characteristics of the three diagenetic facies classes. The number of hidden layers and the number of neurons in each layer were optimized using the control variable method, and the optimal architecture was determined to be a single hidden layer with five neurons. The MLP model achieved a training accuracy of 82.11%, and its prediction accuracy for all 23 samples in well A reached 82.61%. The log response characteristics of each diagenetic facies were in good agreement with the actual thin section identification results. The proposed method for classifying and identifying sandstone diagenetic facies based on image processing technology and MLP effectively enhances the quantitative level and identification efficiency of diagenetic facies research, and can serve as a reference for diagenetic facies evaluation of sandstone reservoirs under similar geological settings.

, articleAbstract=null, authors=FENG WU1, AO WANG1, 2, YAO GUAN3, LEI SHI3, CHUNCHAO CHEN4, XIAOYU LIANG5, SHUFANG GAO5, authorsList=FENG WU, AO WANG, YAO GUAN, LEI SHI, CHUNCHAO CHEN, XIAOYU LIANG, SHUFANG GAO, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322942040882950654, articleId=1322942036726395369, tenantId=1146029695717560320, journalId=1322258508890079423, language=CN, title=基于多层感知器的砂岩成岩相测井识别——以珠江口盆地陆丰凹陷为例, columnId=1322941869369458934, journalTitle=油气藏评价与开发, columnName=数智能源, runingTitle=null, highlight=

砂岩成岩相特征复杂、类型多样,以珠江口盆地陆丰凹陷始新统砂岩为研究对象,建立一套准确的砂岩成岩相分类与测井识别方法具有重要意义。为精确划分成岩相,引入视压实率、视胶结率、视溶蚀率及溶蚀面孔率等定量参数,结合边缘检测与阈值分割等图像处理技术提取铸体薄片各组分含量,系统表征压实、胶结与溶蚀作用的强度差异。依据成岩作用强弱程度,共划分出7种成岩相类型,并进一步归纳为三类:Ⅰ类成岩相(弱压实弱胶结强溶蚀相、弱压实弱胶结弱溶蚀相)物性与孔隙结构最优,孔隙度大于13%,以大孔为主;Ⅱ类成岩相(弱压实强胶结强溶蚀相、弱压实强胶结弱溶蚀相)物性次之,孔隙度介于9%~13%;Ⅲ类成岩相(强压实弱胶结弱溶蚀相、强压实强胶结强溶蚀相、强压实强胶结弱溶蚀相)物性最差,孔隙度低于10%,以微孔为主。在此基础上,将自然伽马、声波时差、补偿中子、补偿密度和电阻率等常规测井曲线与三类成岩相特征建立多层感知器(MLP)神经网络模型,通过控制变量法对隐藏层层数及各层神经元数量进行优化,确定单隐藏层5个神经元为最优结构。模型训练准确率达82.11%,在A井全部23个样本的预测准确率达82.61%,各类成岩相测井响应特征与实际薄片鉴定结果吻合良好。基于图像处理技术与多层感知器的砂岩成岩相分类与测井识别方法,有效提升了成岩相研究的定量化水平与识别效率,可为相似地质背景下砂岩储层成岩相评价提供参考。

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吴丰(1983—),男,博士,副教授,从事非常规储层测井评价与三维数字岩心模拟研究。地址:四川省成都市新都区新都大道8号,邮政编码:610500。E-mail:

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吴丰(1983—),男,博士,副教授,从事非常规储层测井评价与三维数字岩心模拟研究。地址:四川省成都市新都区新都大道8号,邮政编码:610500。E-mail:

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Earth Science, 2022, 47(7): 2481-2493., articleTitle=Quantitative prediction and evaluation of Paleogene favorable hydrocarbon accumulation areas with multi-dynamic-stage-factor combination in Lufeng Sag, Pearl River mouth basin, refAbstract=null), Reference(id=1322942058113151648, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, doi=null, pmid=null, pmcid=null, year=2019, volume=40, issue=null, pageStart=69, pageEnd=80, url=null, language=null, rfNumber=39, rfOrder=74, authorNames=朱筱敏, 葛家旺, 吴陈冰洁, journalName=石油学报, refType=null, unstructuredReference=朱筱敏, 葛家旺, 吴陈冰洁, 等. 珠江口盆地陆丰凹陷深层砂岩储层特征及主控因素[J]. 石油学报, 2019, 40(): 69-80., articleTitle=珠江口盆地陆丰凹陷深层砂岩储层特征及主控因素, refAbstract=增刊1), Reference(id=1322942058180260513, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, doi=null, pmid=null, pmcid=null, year=2019, volume=40, issue=null, pageStart=69, pageEnd=80, url=null, language=null, rfNumber=39, rfOrder=75, authorNames=ZHU Xiaomin, GE Jiawang, Bingjie WU-CHEN, journalName=Acta Petrolei Sinica, refType=null, unstructuredReference=ZHU Xiaomin, GE Jiawang, Bingjie WU-CHEN, et al. 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Characteristics and controlling factors of reservoir development in the Wenchang Formation, Southern Lufeng Sag, Pearl River Mouth Basin[J]. Oil & Gas Geology, 2017, 38(6): 1147-1155., articleTitle=Characteristics and controlling factors of reservoir development in the Wenchang Formation, Southern Lufeng Sag, Pearl River Mouth Basin, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1322942041092665855, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, xref=1, ext=[AuthorCompanyExt(id=1322942041101054464, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, companyId=1322942041092665855, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1 School of Geoscience and Technology, Southwest Petroleum University, Chengdu, Sichuan 610500, China), AuthorCompanyExt(id=1322942041105248769, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, companyId=1322942041092665855, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1 西南石油大学地球科学与技术学院,四川   成都 610500)]), AuthorCompany(id=1322942041189134850, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, xref=2, ext=[AuthorCompanyExt(id=1322942041193329155, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, companyId=1322942041189134850, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2 China National Logging Corporation, Xi’an, Shaanxi 710077, China), AuthorCompanyExt(id=1322942041201717764, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, companyId=1322942041189134850, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2 中国石油集团测井有限公司,陕西   西安 710077)]), AuthorCompany(id=1322942041260438021, tenantId=1146029695717560320, journalId=1322258508890079423, 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companyId=1322942041331741192, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=4 Chengdu Dairuike Energy Technology Co., Ltd., Chengdu, Sichuan 610500, China), AuthorCompanyExt(id=1322942041344324106, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, companyId=1322942041331741192, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=4 成都代瑞克能源技术有限责任公司,四川   成都 610500)]), AuthorCompany(id=1322942041415627275, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, xref=5, ext=[AuthorCompanyExt(id=1322942041424015884, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, companyId=1322942041415627275, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=5 Research Institution of Exploration and Development, PetroChina Qinghai Oilfield Company, Dunhuang, Gansu 736202, China), AuthorCompanyExt(id=1322942041432404493, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, companyId=1322942041415627275, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=5 中国石油青海油田分公司勘探开发研究院,甘肃 敦煌 736202)])], figs=[ArticleFig(id=1322942045496685118, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=EN, label=Fig.1, caption=Geological overview of Lufeng Sag, Pearl River Mouth Basin, figureFileSmall=uys4gx3JIORdimWmAVX7Jg==, figureFileBig=apZUNvHOLKvCkd3/KXtk7A==, tableContent=null), ArticleFig(id=1322942045609931327, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=CN, label=图1, caption=珠江口盆地陆丰凹陷地质概况, figureFileSmall=uys4gx3JIORdimWmAVX7Jg==, figureFileBig=apZUNvHOLKvCkd3/KXtk7A==, tableContent=null), ArticleFig(id=1322942045836423745, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=EN, label=Fig.2, caption=Diagenetic model of Lufeng Sag, Pearl River Mouth Basin, figureFileSmall=0RoX4bNT2F0QhNN+gsUeAQ==, figureFileBig=7/DWgvLLV8y3NcG5NtQnHg==, tableContent=null), ArticleFig(id=1322942046050333250, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=CN, label=图2, caption=珠江口盆地陆丰凹陷成岩模式, figureFileSmall=0RoX4bNT2F0QhNN+gsUeAQ==, figureFileBig=7/DWgvLLV8y3NcG5NtQnHg==, tableContent=null), ArticleFig(id=1322942046146802243, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=EN, label=Fig.3, caption=Extraction process of rock components based on thin section image processing, figureFileSmall=kIDcBCO2SHNPgtszbkXBdw==, figureFileBig=yk07RB/p4iJtCc5LgO3MYQ==, tableContent=null), ArticleFig(id=1322942046444597828, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=CN, label=图3, caption=基于薄片图像处理的岩石组分提取流程

注:a为原始铸体薄片图像;b为处理后铸体薄片图像;c为灰度薄片图像;d为边缘初步检测;e为对应显示边界;f为对应提取边界;g为去噪;h为边界应用;i为组分识别分类。

, figureFileSmall=kIDcBCO2SHNPgtszbkXBdw==, figureFileBig=yk07RB/p4iJtCc5LgO3MYQ==, tableContent=null), ArticleFig(id=1322942046520095301, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=EN, label=Fig.4, caption=Display of typical thin section components in Lufeng Sag, Pearl River Mouth Basin, figureFileSmall=LRnjUxRVjjwLVXQhn+7+5A==, figureFileBig=VswfOGbu2DeCrXyyIbaswQ==, tableContent=null), ArticleFig(id=1322942046624952902, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=CN, label=图4, caption=珠江口盆地陆丰凹陷典型薄片各组分展示, figureFileSmall=LRnjUxRVjjwLVXQhn+7+5A==, figureFileBig=VswfOGbu2DeCrXyyIbaswQ==, tableContent=null), ArticleFig(id=1322942048554332744, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=EN, label=Fig.5, caption=Relationship between pore throat characteristics and pore permeability of various diagenetic facies, figureFileSmall=ndrSJqSQmf3hMccOfPI64A==, figureFileBig=vkleepAtvN+aflcNd1oKIw==, tableContent=null), ArticleFig(id=1322942048617247305, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=CN, label=图5, caption=各类成岩相孔喉特征与孔渗关系

注:a为孔渗关系;b为Ⅲ类成岩相薄片;c为Ⅱ类成岩相薄片;d为Ⅰ类成岩相薄片;e为Ⅲ类成岩相核磁共振T2谱分布图;f为Ⅱ类成岩相核磁共振T2谱分布图;g为Ⅰ类成岩相核磁共振T2谱分布图;h为Ⅲ类成岩相压汞孔喉半径分布;i为Ⅱ类成岩相压汞孔喉半径分布;j为Ⅰ类成岩相压汞孔喉半径分布。

, figureFileSmall=ndrSJqSQmf3hMccOfPI64A==, figureFileBig=vkleepAtvN+aflcNd1oKIw==, tableContent=null), ArticleFig(id=1322942048692744778, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=EN, label=Fig.6, caption=Cumulative distribution frequency of various diagenetic facies on logging curves, figureFileSmall=kzorx/T3G9ZDbHqI5qGiYw==, figureFileBig=L4zfbIW0cl8vYZ5POBUM1A==, tableContent=null), ArticleFig(id=1322942048764047947, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=CN, label=图6, caption=各类成岩相在测井曲线上的累计分布频率

注:1 ft= 0.304 8 m。

, figureFileSmall=kzorx/T3G9ZDbHqI5qGiYw==, figureFileBig=L4zfbIW0cl8vYZ5POBUM1A==, tableContent=null), ArticleFig(id=1322942048822768204, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=EN, label=Fig.7, caption=Influence of number of hidden layers and units on results, figureFileSmall=9auPvw/k/MeU9XLbgYEkJw==, figureFileBig=upG2y6YoHALPbmrY2Nhp1w==, tableContent=null), ArticleFig(id=1322942048881488461, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=CN, label=图7, caption=隐藏层层数及单元个数对结果的影响, figureFileSmall=9auPvw/k/MeU9XLbgYEkJw==, figureFileBig=upG2y6YoHALPbmrY2Nhp1w==, tableContent=null), ArticleFig(id=1322942048948597326, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=EN, label=Fig.8, caption=Evaluation indicators for MLP model, figureFileSmall=2YJC1hECTLZK5Gi+SCoujg==, figureFileBig=FzxC2IJXMWKtxQq2WSW7Zg==, tableContent=null), ArticleFig(id=1322942049024094799, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=CN, label=图8, caption=多层感知器模型评价指标, figureFileSmall=2YJC1hECTLZK5Gi+SCoujg==, figureFileBig=FzxC2IJXMWKtxQq2WSW7Zg==, tableContent=null), ArticleFig(id=1322942049087009360, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=EN, label=Fig.9, caption=Logging identification performance of diagenetic facies in well A, figureFileSmall=cs3J3RjJM1wMM3gQiv7tNg==, figureFileBig=0+b39stPCZQhRyu3cBBYVA==, tableContent=null), ArticleFig(id=1322942049141535313, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=CN, label=图9, caption=A井成岩相测井识别效果

注:1 ft= 0.304 8 m; 1 in=0.025 4 m。

, figureFileSmall=cs3J3RjJM1wMM3gQiv7tNg==, figureFileBig=0+b39stPCZQhRyu3cBBYVA==, tableContent=null), ArticleFig(id=1322942049217032786, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=EN, label=Table1, caption=Diagenetic facies classification criteria of Lufeng Sag,Pearl River Mouth Basin, figureFileSmall=null, figureFileBig=null, tableContent=
分类Ⅰ类Ⅱ类Ⅲ类

弱压实弱胶结

强溶蚀相

弱压实弱胶结

弱溶蚀相

弱压实强胶结

强溶蚀相

弱压实强胶结

弱溶蚀相

强压实弱胶结

弱溶蚀相

强压实强胶结

强溶蚀相

强压实强胶结

弱溶蚀相

成岩作用强弱程度/%

A≤70

B≤50

C≥30

D≥4

A≤70

B≤50

C≤30

D≤4

A≤70

B≥50

C≥30

D≥4

A≤70

B≥50

C≤30

D≤4

A≥70

B≤50

C≤30

D≥4

A≥70

B≥50

C≥30

D≥4

A≥70

B≥50

C≤30

D≤4

), ArticleFig(id=1322942049292530259, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=CN, label=表1, caption=

珠江口盆地陆丰凹陷成岩相划分标准

, figureFileSmall=null, figureFileBig=null, tableContent=
分类Ⅰ类Ⅱ类Ⅲ类

弱压实弱胶结

强溶蚀相

弱压实弱胶结

弱溶蚀相

弱压实强胶结

强溶蚀相

弱压实强胶结

弱溶蚀相

强压实弱胶结

弱溶蚀相

强压实强胶结

强溶蚀相

强压实强胶结

弱溶蚀相

成岩作用强弱程度/%

A≤70

B≤50

C≥30

D≥4

A≤70

B≤50

C≤30

D≤4

A≤70

B≥50

C≥30

D≥4

A≤70

B≥50

C≤30

D≤4

A≥70

B≤50

C≤30

D≥4

A≥70

B≥50

C≥30

D≥4

A≥70

B≥50

C≤30

D≤4

), ArticleFig(id=1322942049359639124, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=EN, label=Table 2, caption=Pore permeability and logging data of samples from various diagenetic facies, figureFileSmall=null, figureFileBig=null, tableContent=
成岩相分类样品号深度/m成岩相类型孔隙度/%渗透率/10-3μm2平均孔隙半径/μm自然伽马/API声波时差/(μs/ft)补偿中子/%补偿密度/(g/cm3)微侧向测井电阻率(浅侵入带)/ (Ω·m)微侧向测井电阻率(深侵入带)/ (Ω·m)
Ⅰ类13 132.7弱压实弱胶结强溶蚀相18.2207.007.47866.5578.1515.352.371.691.99
23 311.0弱压实弱胶结弱溶蚀相13.571.701.18467.9571.5315.902.333.713.97
33 350.0弱压实弱胶结强溶蚀相17.924.202.23856.3379.7516.182.355.6510.05
43 388.0弱压实弱胶结强溶蚀相16.074.404.04789.1967.9716.692.375.256.64
53 385.0弱压实弱胶结弱溶蚀相15.623.100.39257.6582.5122.542.363.3510.29
︙︙︙︙︙︙︙︙︙︙︙︙
313 630.0弱压实弱胶结强溶蚀相17.18.942.21382.3975.2114.892.407.9013.97
Ⅱ类323 422.0弱压实强胶结强溶蚀相10.71.310.43874.7675.4510.732.4214.7621.44
333 470.0弱压实强胶结强溶蚀相11.91.480.56176.2175.2011.222.4411.3814.48
343 731.0弱压实强胶结弱溶蚀相10.31.760.88181.5668.6810.402.4312.6510.00
353 827.0弱压实强胶结弱溶蚀相10.61.930.37475.4770.6911.202.4514.2519.97
363 512.0弱压实强胶结强溶蚀相10.52.780.853103.0062.3413.902.4713.4724.33
︙︙︙︙︙︙︙︙︙︙︙︙
524 076.8弱压实强胶结弱溶蚀相9.90.950.699104.0966.0311.972.5212.2210.76
Ⅲ类533 263.3强压实强胶结弱溶蚀相7.50.340.89679.8560.148.482.5617.9522.84
543 716.6强压实强胶结强溶蚀相8.70.611.460123.8161.974.832.6119.9920.82
553 720.0强压实弱胶结弱溶蚀相9.40.520.874110.6469.242.532.6019.3420.96
563 845.6强压实弱胶结弱溶蚀相9.60.350.72878.2465.5810.382.5416.5016.34
573 853.2强压实强胶结强溶蚀相9.30.200.81076.9265.175.512.5617.5622.28
︙︙︙︙︙︙︙︙︙︙︙︙
714 221.9强压实强胶结弱溶蚀相4.90.070.68088.4651.345.492.6226.5930.49
), ArticleFig(id=1322942049422553685, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942036726395369, language=CN, label=表2, caption=

各类成岩相样品对应孔渗及测井数据

, figureFileSmall=null, figureFileBig=null, tableContent=
成岩相分类样品号深度/m成岩相类型孔隙度/%渗透率/10-3μm2平均孔隙半径/μm自然伽马/API声波时差/(μs/ft)补偿中子/%补偿密度/(g/cm3)微侧向测井电阻率(浅侵入带)/ (Ω·m)微侧向测井电阻率(深侵入带)/ (Ω·m)
Ⅰ类13 132.7弱压实弱胶结强溶蚀相18.2207.007.47866.5578.1515.352.371.691.99
23 311.0弱压实弱胶结弱溶蚀相13.571.701.18467.9571.5315.902.333.713.97
33 350.0弱压实弱胶结强溶蚀相17.924.202.23856.3379.7516.182.355.6510.05
43 388.0弱压实弱胶结强溶蚀相16.074.404.04789.1967.9716.692.375.256.64
53 385.0弱压实弱胶结弱溶蚀相15.623.100.39257.6582.5122.542.363.3510.29
︙︙︙︙︙︙︙︙︙︙︙︙
313 630.0弱压实弱胶结强溶蚀相17.18.942.21382.3975.2114.892.407.9013.97
Ⅱ类323 422.0弱压实强胶结强溶蚀相10.71.310.43874.7675.4510.732.4214.7621.44
333 470.0弱压实强胶结强溶蚀相11.91.480.56176.2175.2011.222.4411.3814.48
343 731.0弱压实强胶结弱溶蚀相10.31.760.88181.5668.6810.402.4312.6510.00
353 827.0弱压实强胶结弱溶蚀相10.61.930.37475.4770.6911.202.4514.2519.97
363 512.0弱压实强胶结强溶蚀相10.52.780.853103.0062.3413.902.4713.4724.33
︙︙︙︙︙︙︙︙︙︙︙︙
524 076.8弱压实强胶结弱溶蚀相9.90.950.699104.0966.0311.972.5212.2210.76
Ⅲ类533 263.3强压实强胶结弱溶蚀相7.50.340.89679.8560.148.482.5617.9522.84
543 716.6强压实强胶结强溶蚀相8.70.611.460123.8161.974.832.6119.9920.82
553 720.0强压实弱胶结弱溶蚀相9.40.520.874110.6469.242.532.6019.3420.96
563 845.6强压实弱胶结弱溶蚀相9.60.350.72878.2465.5810.382.5416.5016.34
573 853.2强压实强胶结强溶蚀相9.30.200.81076.9265.175.512.5617.5622.28
︙︙︙︙︙︙︙︙︙︙︙︙
714 221.9强压实强胶结弱溶蚀相4.90.070.68088.4651.345.492.6226.5930.49
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基于多层感知器的砂岩成岩相测井识别——以珠江口盆地陆丰凹陷为例
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吴丰 1 , 王澳 1, 2 , 管耀 3 , 石磊 3 , 陈春潮 4 , 梁晓宇 5 , 高树芳 5
油气藏评价与开发 | 数智能源 2026,16(4): 899-912
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油气藏评价与开发 |数智能源 2026 , 16 (4) : 899 -912
基于多层感知器的砂岩成岩相测井识别——以珠江口盆地陆丰凹陷为例
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吴丰(1983—),男,博士,副教授,从事非常规储层测井评价与三维数字岩心模拟研究。地址:四川省成都市新都区新都大道8号,邮政编码:610500。E-mail:

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吴丰(1983—),男,博士,副教授,从事非常规储层测井评价与三维数字岩心模拟研究。地址:四川省成都市新都区新都大道8号,邮政编码:610500。E-mail:

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吴丰1 , 王澳1, 2, 管耀3, 石磊3, 陈春潮4, 梁晓宇5, 高树芳5
作者信息
  • 1 西南石油大学地球科学与技术学院,四川   成都 610500
  • 2 中国石油集团测井有限公司,陕西   西安 710077
  • 3 中海石油(中国)有限公司深圳分公司,广东   深圳 518054
  • 4 成都代瑞克能源技术有限责任公司,四川   成都 610500
  • 5 中国石油青海油田分公司勘探开发研究院,甘肃 敦煌 736202
作者简介:

吴丰(1983—),男,博士,副教授,从事非常规储层测井评价与三维数字岩心模拟研究。地址:四川省成都市新都区新都大道8号,邮政编码:610500。E-mail:

Sandstone diagenetic facies logging identification based on multilayer perceptron: A case study of Lufeng Sag in Pearl River Mouth Basin
FENG WU1 , AO WANG1, 2, YAO GUAN3, LEI SHI3, CHUNCHAO CHEN4, XIAOYU LIANG5, SHUFANG GAO5
Affiliations
  • 1 School of Geoscience and Technology, Southwest Petroleum University, Chengdu, Sichuan 610500, China
  • 2 China National Logging Corporation, Xi’an, Shaanxi 710077, China
  • 3 Shenzhen Company of CNOOC (China) Limited, Shenzhen, Guangdong 518054, China
  • 4 Chengdu Dairuike Energy Technology Co., Ltd., Chengdu, Sichuan 610500, China
  • 5 Research Institution of Exploration and Development, PetroChina Qinghai Oilfield Company, Dunhuang, Gansu 736202, China
出版时间: 2026-07-26 doi: 10.13809/j.cnki.cn32-1825/te.2024626
文章导航
收藏切换
珠江口盆地  /  文昌组  /  成岩相  /  图像处理  /  机器学习  /  测井
Pearl River Mouth Basin  /  Wenchang Formation  /  diagenetic facies  /  image processing  /  machine learning  /  logging
吴丰, 王澳, 管耀, 石磊, 陈春潮, 梁晓宇, 高树芳. 基于多层感知器的砂岩成岩相测井识别——以珠江口盆地陆丰凹陷为例. 油气藏评价与开发, 2026 , 16 (4) : 899 -912 . DOI: 10.13809/j.cnki.cn32-1825/te.2024626
FENG WU, AO WANG, YAO GUAN, LEI SHI, CHUNCHAO CHEN, XIAOYU LIANG, SHUFANG GAO. Sandstone diagenetic facies logging identification based on multilayer perceptron: A case study of Lufeng Sag in Pearl River Mouth Basin[J]. Petroleum Reservoir Evaluation and Development, 2026 , 16 (4) : 899 -912 . DOI: 10.13809/j.cnki.cn32-1825/te.2024626
在地质勘探与油气资源开发领域,成岩相作为表征沉积岩在形成过程中发育模式的重要内容,反映了岩石在成岩过程中的变化特征,对于储层评价以及油气勘探开发具有不可或缺的意义。前人对成岩相进行了大量研究[1-2],为了进一步提高勘探开发效益,亟须建立能够准确划分并识别砂岩成岩相的方法。位于中国南海的珠江口盆地是中国重要的油气产区,其陆丰凹陷区域已发现众多油气藏,展现出较大的勘探潜力。陆丰凹陷构造演化可划分为始新世断陷、渐新世—中中新世坳陷、晚中新世—第四纪断层活化三大阶段。研究区始新统主要分布在文昌组与恩平组。其中,文昌湖盆演化序列完整,依次发育浅湖—深湖—浅湖—滨浅湖沉积环境,沉积物具近物源、多物源供给特征[3]。恩平组纵向沉积相变差异显著,恩平组一段(恩一段)、恩平组二段(恩二段)广泛发育浅水辫状河三角洲沉积,恩平组三段(恩三段)、恩平组四段(恩四段)以辫状河三角洲—滨浅湖沉积为主[4]。受多期构造运动叠加影响,陆丰凹陷构造演化过程复杂,成岩相分析已成为该区油气地质研究的重点方向[5]。
为深入了解成岩相的特征,众多学者围绕成岩相划分开展了许多工作[6-7]。王冠民等[8]将沉积微相应用于致密砂岩可压裂性分析,为储层评价提供了新视角。邹才能等[9]从实用性、成因性和定量性出发,确定成岩相可按岩性、成岩作用和孔渗性划分,并通过沉积相、测井相、地震相和岩心薄片等进行综合定量预测;后续学者基于前人的研究[10-14],确定岩石成岩作用参数的计算工作。然后,学者们通过多种方法对研究区储层成岩相进行定量划分,成果显著[15-19]。传统的成岩相划分方法多依赖于薄片观察、统计分析等人工手段,整体效率较低,随着图像处理技术兴起,可通过该方法快速、定量地识别薄片各组分,使成岩相划分工作更为精准。
在成岩相划分的基础上,已有成果证明能够通过测井曲线对成岩相进行识别[20-23],因此可以提取测井数据的特征,进行成岩相划分及地层评价[24-30]。机器学习方法效率高、速度快,针对不同地质情况和资料,合理地选择机器学习方法可以更好地实现目标层段的预测[31-35]。针对陆丰凹陷砂岩成岩相的特点,通过图像处理划分成岩相,再利用多层感知器(MLP)模型训练常规测井曲线对不同层段进行成岩相预测,提高成岩相划分与识别工作的效率与准确性。通过深入探讨该方法的技术流程及应用效果,为地质研究及油气勘探提供一种新的思路,推动该领域的进步与发展。
位于南海北部陆架的珠江口盆地,是一个地质构造复杂的重要地带。该盆地从北到南可划分为北部隆起带、北部坳陷带、中央隆起带、南部坳陷带和南部隆起带[36-37]。其中,北部坳陷带的面积约为4.2×104 km2,为盆地内关键的油气产区[38]。陆丰凹陷发育多条断层,使其被分为陆丰南和陆丰北两个地区(图1a)。陆丰南地区主要发育构造洼地,而陆丰北地区存在多条断层,将该地区划分为多个板块,这些区域具有较大的勘探潜力[39-40]。
陆丰凹陷发育从古新统至渐新统完整地层,区域性不整合界面将珠琼运动划分为两期,即珠Ⅰ幕对应文昌组沉积、珠琼Ⅱ幕对应恩平组沉积;其中文昌组可划分为6个亚段,文昌组一段(文一段)、文昌组二段(文二段)、文昌组三段(文三段)、文昌组四段(文四段)、文昌组五段(文五段)、文昌组六段(文六段);恩平组可划分为4个亚段(图1b)。文昌组、恩平组沉积时期发育完整的沉积旋回:湖盆扩张初期,受惠陆低凸起与东沙隆起物源供给控制,区内广泛发育辫状河三角洲沉积,沉积物粒度整体偏粗、分选较差,以压实作用为主;湖盆发育中期,断裂活动加剧、物源持续供给,盆地以半深湖—深湖泥岩沉积为主,水动力条件较弱,胶结作用普遍发育;湖盆萎缩后期,水体范围缩减,广泛发育滨浅湖砂泥互层沉积,陆源粗碎屑物质再次入盆,完整形成该套地层的沉积充填序列。
成岩模式是沉积物转变为沉积岩的过程中,不同阶段、不同作用及其相互关系的综合描述。在研究区域成岩发育演化阶段,压实作用、胶结作用和溶蚀作用起着决定性的作用。陆丰凹陷文昌组从距今约40 Ma的古近纪始新世开始沉积,在地表持续了约6 Ma,随后恩平组开始沉积。基于已有研究成果,明确陆丰凹陷古近系成岩演化序列为:压实作用、黏土矿物胶结、压溶作用、石英自生加大、早期碳酸盐胶结、溶蚀作用、晚期碳酸盐胶结。在生成岩阶段,已沉积的文昌组岩石颗粒开始发育以伊/蒙混层为主的黏土膜,其不仅保持了颗粒的完整性,同时也抑制了溶蚀作用对颗粒的影响。其后文昌组不断埋深,上覆地层形成的压力开始对地层中的颗粒进行压实。早成岩阶段分为A、B两个时期,从B期开始,成岩作用逐渐加强。经过压实作用后的地层仍有部分原生粒间孔隙保留,黏土矿物开始在粒间孔隙中胶结,之后发生石英自生加大,碳酸盐也逐渐充填在粒间孔隙中。至新近纪,成岩阶段到达中成岩阶段A1期,地层开始发生溶蚀作用,该时期的压实作用已相对较弱。在中成岩阶段A2时期,成岩作用已减弱,少量碳酸盐矿物向孔隙中充填,储层物性受到影响,略微降低(图2)。
成岩相是沉积物在成岩作用和构造作用等多种因素共同影响下,经过特定的成岩作用与演化阶段逐步形成的结果,深入分析压实、胶结、溶蚀等成岩作用对沉积物的影响有着重要意义。压实作用通过物理压力使沉积物颗粒紧密排列、减少孔隙空间,对储集层的孔隙结构产生重要影响;胶结作用通过化学沉淀等方式将沉积物颗粒黏结在一起,增强岩石的强度和稳定性;溶蚀作用则可以溶解部分岩石矿物,形成新的孔隙空间,对于改善储集层的物性具有很好的效果。这些成岩作用持续发生,对沉积物的物理性质、化学组成以及孔隙结构等产生复杂的影响。虽然成岩相已广泛应用于物性分析以及储层预测,但是研究人员对成岩相的划分大多仍通过镜下薄片观察、成岩作用定性描述等人工方式进行,缺少定量划分标准。
基于前人研究,引入视压实率、视胶结率和视溶蚀率等已有定量表征成岩作用的参数。这些参数对成岩相定量划分极为关键。视压实率A计算公式[14-16]如下:
A=φori-φpreφori×100%
φori=20.91+22.90/P25/P75×100%
式中:φori、φpre分别表示原始孔隙度、现在孔隙度,%;P25为颗粒累积分布25%对应的粒径;P75为颗粒累积分布75%对应的粒径,单位μm。
视胶结率B计算公式[15-16]如下:
B=CcemCcem+Vip×100%
式中:Ccem表示胶结物总量,%;Vip表示粒间孔隙体积,%,根据对铸体薄片图像组分统计得到。
视溶蚀率C和溶蚀面孔率D计算公式[16-17]如下:
C=DVtp×100%
D=VipVtp+VgpVtp
式中:Vip、Vgp、Vtp分别表示粒间溶蚀面孔体积、粒内溶蚀面孔体积、总孔隙体积,%,根据对铸体薄片图像组分统计得到。
岩石薄片直接反映成岩相特征,定量识别各组分含量便能依据成岩作用参数确定成岩作用强度。边缘检测技术用于识别数字图像中亮度或颜色剧变处的边界,通过在二维图像的水平方向和垂直方向添加特定算子,利用卷积核计算,可得各像素点水平与垂直方向的梯度近似值,进而算出梯度大小和方向。基于ImageJ软件,使用边缘检测及阈值分割技术识别薄片各组分(图3)。图3a为原始铸体薄片图像,各组分间存在明显的边界。先对其预处理(图3b),调整对比度以突出各组分的边界特征。再转化为灰度图,使其适配基于亮度梯度的算法,更精准地划分各组分边界(图3c)。然后使用边缘检测技术划分边界(图3d),通过阈值分割显示出边界特征(图3e),再通过图像反转得到边界(图3f)。因结果中含有噪点,进行去噪处理(图3g),然后将像素边界转化为线性边界并应用到原始图像(图3h)。铸体薄片中,孔隙通常被染为蓝色,而粒间孔为颗粒间的孔隙,将环绕于颗粒的蓝色区域划分为粒间孔;粒内孔位于颗粒内部,有明显的溶蚀痕迹,将颗粒内孤立的孔隙划分为粒内孔;溶蚀孔是矿物被溶解而形成的孔隙,一般沿矿物颗粒边缘发育,可观察到矿物溶蚀残余,将颗粒边缘不规则状、可见溶蚀痕迹的孔隙划分为溶蚀孔;胶结物是填充于颗粒之间、将颗粒胶结在一起的物质,其形态多样、成分复杂,颜色与纹理不同于岩石颗粒,将颗粒间不同于岩石颗粒颜色的组分划分为胶结物。基于以上特征,通过与原始薄片进行对比,对各组分区域分别着色,实现原始薄片各组分分割(图3i)。
成岩作用参数公式可依据薄片各组分含量,定量表征成岩过程中各类成岩作用的发育强度。利用图像处理技术能够精准测定岩石薄片中各矿物组分含量,将二者结合,可实现对成岩作用强度的定量评价,为研究区成岩相划分提供可靠数据支撑。对研究区薄片样品各组分含量进行统计并绘制频率直方图分析[19-20],分别以70%、50%、30%作为压实作用、胶结作用与溶蚀作用强弱分级的含量判别阈值。
研究区依据压实、胶结、溶蚀3类成岩作用强度,将成岩相划分为7种类型,并归为3大类:将弱压实弱胶结强溶蚀相、弱压实弱胶结弱溶蚀相归为Ⅰ类成岩相;弱压实强胶结强溶蚀相、弱压实强胶结弱溶蚀相归为Ⅱ类成岩相;强压实弱胶结弱溶蚀相、强压实强胶结强溶蚀相、强压实强胶结弱溶蚀相归为Ⅲ类成岩相(表1)。Ⅰ类成岩相压实与胶结作用均较弱,岩石颗粒粒径偏大、胶结物含量偏低;以弱压实弱胶结弱溶蚀相为例,岩石颗粒含量为66.54%,整体孔隙发育较好,以粒间孔为主要储集空间。Ⅱ类成岩相胶结作用有所增强,部分原生孔隙被胶结物充填,粒间孔占比明显降低。Ⅲ类成岩相受强烈压实作用控制,铸体薄片中岩石颗粒含量偏高,为70%~85%;粒间孔被胶结物大量充填,致使该类成岩相孔喉发育差、连通性弱,储集物性整体较差(图4)。
基于研究区71个样本分析(表2),研究区成岩相随着成岩作用的增强,岩石气测孔隙度、气测渗透率、薄片面孔率、核磁T2(横向弛豫时间)值、压汞孔喉半径逐渐降低。Ⅰ类成岩相的孔隙度在13%以上,渗透率大于3×10-3 μm2;Ⅱ类成岩相的孔隙度介于9%~13%,渗透率介于(0.7~5.0)×10-3 μm2;Ⅲ类成岩相的孔隙度低于10%,渗透率小于0.9×10-3 μm2,各类成岩相孔隙度与渗透率的相关性较好。图5a中Ⅰ类与Ⅱ类成岩相、Ⅱ类与Ⅲ类成岩相之间各有一块交叉区域,主要由于部分样品岩石气测孔隙度或气测渗透率较低,导致数据点下移,但整体符合成岩相物性特征,划分结果与成岩相特征相关性较好。
核磁共振T2谱分布图表明,Ⅰ类成岩相中大孔隙度分量集中在横向弛豫时间较大的区域,证明该类成岩相中孔隙体积较大,孔隙结构以大孔隙为主,流体具有更多的运移通道(图5g);Ⅱ类成岩相的孔隙度分量显著降低,代表了该类成岩相孔隙体积比Ⅰ类小,孔隙空间相对较少(图5f);Ⅲ类成岩相中大孔隙度分量分布在较低的横向弛豫时间上,证明该类成岩相的孔隙体积较小,孔隙结构以微孔隙为主(图5e)。压汞孔喉半径分布图也证实,Ⅰ类成岩相平均孔喉分布频率与平均渗透率较高,并分布在较大的孔喉半径区间上,且孔喉半径最大值为4 μm(图5j);Ⅱ类成岩相平均孔喉分布频率与平均渗透率分布的孔喉半径区间比Ⅰ类成岩相较低,孔喉半径分布最大只有2.5 μm(图5i);Ⅲ类成岩相整体孔喉半径分布区间较小,平均孔喉分布频率与平均渗透率的孔喉半径分布最大为1.6 μm(图5h)。
总结得出,Ⅰ类成岩相物性最好、孔喉结构较优、孔隙更为发育;Ⅱ类成岩相物性次之,存在部分大孔及中孔;Ⅲ类成岩相物性最差,孔隙基本为小孔,孔喉结构较差,难以储存流体。对比各类成岩相的物性关系、孔喉分布特征,表明通过该方法能够对各类成岩相进行区分。
不同成岩相因为存在孔隙结构、成岩程度、物性等差异,蕴含着不同地层信息,常规测井曲线能直接或间接地反映地层信息。自然伽马(GR)曲线反映地层中放射性元素(主要是铀、钍、钾)的放射性强度。泥岩自然伽马值通常较高,纯砂岩则较低。通过GR曲线的特征可以判断岩石沉积环境,为成岩相识别提供基础信息。声波时差(AC)曲线反映声波在地层中的传播时差,高孔隙度的岩石声波时差较大,可用于识别成岩相。补偿中子(CNL)曲线主要反映地层中H原子含量,通过孔隙内流体多少反映岩石孔隙度,在一定程度上体现成岩相发育情况。补偿密度(DEN)曲线反映地层体积密度,能辅助判断岩石的矿物组成,对成岩相识别有一定作用。微侧向测井电阻率曲线主要反映井壁周围与原状地层的导电能力,与地层流体分布、致密程度相关,可间接反映成岩相类别。基于以上原理,建立不同成岩相与各测井曲线的关系,就能通过测井曲线识别成岩相。
如图6所示,3类成岩相在各条常规曲线上的分布存在着差异,这种差异主要体现在其对应的测井曲线值范围不同。Ⅰ类成岩相对应GR值介于50~90 API,AC值介于65~85 μs/ft,CNL值介于14%~23%,DEN值介于2.3~2.4 g/cm3,电阻率值较低;Ⅱ类成岩相对应GR值介于73~105 API,AC值介于60~77 μs/ft,CNL值介于10%~15%,DEN值介于2.40~2.55 g/cm3,电阻率值有所上升;Ⅲ类成岩相对应GR值介于75~105 API,AC值介于50~70 μs/ft,CNL值介于2%~13%,DEN值介于2.50~2.65 g/cm3,电阻率值最大。
各类成岩相样品对应测井数据如表2所示。
多层感知器作为前馈型神经网络模型,适用于分类、回归、模式识别、特征提取等任务。因其可以提取目标的特征数据,构建数据与分类目标的联系,所以适合作为成岩相测井识别的分类模型。该模型采用非线性关系建模,可自动从原始测井数据中提取有用特征,使其可以适用于不同地质条件,且能够保持结果的稳定。对于精细的成岩相划分,可以提供更可靠的解释。
测井曲线与成岩相存在紧密的联系,提取各类成岩相对应的常规测井数据,将其作为输入层并传递至隐藏层。隐藏层处理输入数据后,再传给对应各类成岩相的输出层。隐藏层的层数、神经元数量和激活函数的选择会影响成岩相分类的准确性,简单的模型设置可能无法充分获取测井曲线信息,导致分类结果不准确;而模型过于复杂会出现过拟合现象,即对训练数据过度拟合,而对新数据的泛化能力较差。
模型构建过程中,若出现地层水矿化度分布不均匀和井眼不规则等现象,会导致测井曲线异常,进而影响成岩相的测井识别。地层水分析结果表明:研究区地层水矿化度未出现明显波动,对成岩相的测井识别的影响可以忽略。另外,研究区仅有极少部分由井眼扩径导致的测井曲线异常,在模型构建时已将这部分异常数据从原始数据中筛除,保证了模型的准确性。
根据以上流程,建立多层感知器模型,对模型参数进一步优化以提升准确性。将原始数据按7∶3的比例划分为训练集和测试集,由于随机数种子不同,因此每次建模所用数据具有随机性,致使每次训练出的正确率并不相同。保持参数固定,连续多次对原始数据建立随机模型并记录每次模型识别的正确率。为保证每次建立模型的准确性,筛选掉训练集和测试集正确率相差较大(差值大于5%)的结果,保证每个模型至少有50次有效的训练结果。图7为改变隐藏层个数及每层单元数后识别正确率的平均结果,图7a为一个隐藏层下训练集中不同单元个数对正确率的影响结果,当隐藏层单元个数为5时,正确率最高;当单元数大于5,正确率呈下降趋势。图7b为一个隐藏层下测试集中不同单元个数对正确率的影响结果,其结果与训练集基本一致。图7c、图7d为2个隐藏层下训练集和测试集中不同单元个数对正确率的影响结果,同样表明当每层单元数为5时,整体正确率较高,但两个隐藏层识别的正确率略低于一个隐藏层识别的正确率。
基于上述分析,优化模型参数,建立适用于研究区的模型,然后对模型的准确性进行检验。根据模型预测结果与实际结果进行对比,通常使用准确率(Accuracy)、精确率(Precision)、召回率(Recall)、F1值对模型进行评价。准确率为模型正确预测的样本数占总样本数的比例。精确率为在被模型预测为正类的样本中,真正为正类的样本所占的比例。召回率为在实际为正类的样本中,被模型正确预测为正类的样本所占的比例。F1值为精确率和召回率的调和平均数。通过调整模型参数,可以明显发现模型各项评价指标均有所升高(图8)。调整参数前,模型各项评价指标精度在73%(图8a);调整参数后模型各项评价指标精度提升至84%(图8b)。
通过对研究区9口井常规测井曲线计算,将识别出成岩相与铸体薄片结果进行对比,总体识别的正确率为82.11%。将模型应用到A井文昌组进行成岩相预测,通过识别结果与薄片鉴定结果对比(图9)发现7张薄片的成岩相类型与预测结果相符合。模型将在3 420~3426.15 m段识别为Ⅰ类成岩相,而3 422.05 m处的铸体薄片图像经过图像处理可划分为弱压实弱胶结弱溶蚀相,属于Ⅰ类成岩相,同时也可发现Ⅰ类成岩相对应的GR值较小,数值介于69~91 API,AC值较高,数值介于75~88 μs/ft,都存在于物性较好的砂岩段。在3 426.95~3 430.45 m段,模型将该段识别为Ⅱ类成岩相,而3 427.85 m处的铸体薄片图像经图像处理显示,属于弱压实强胶结弱溶蚀相,与预测结果吻合,Ⅱ类成岩相整体GR值介于89~98 API,AC值介于66~76 μs/ft,物性整体略低于Ⅰ类成岩相。预测的Ⅲ类成岩相主要分布在泥质较多的层段,由于泥质增多会导致岩石声波骨架值增大,所以Ⅲ类成岩相的整体声波时差范围会升高。3 442.05 m和3 457.55 m处的铸体薄片图像经图像处理,显示为强压实弱胶结弱溶蚀相和强压实强胶结弱溶蚀相,属于Ⅲ类成岩相,GR值范围介于95~145 API,AC值介于70~75 μs/ft。预测的成岩相特征与实际成岩相特征吻合较好,表明该训练模型在成岩相测井识别上具有较好的效果。
1) 以珠江口盆地陆丰凹陷文昌组砂岩成岩相为例,研究区成岩相主要受压实、胶结、溶蚀作用控制。基于铸体薄片资料,通过图像处理可以识别出薄片各组分的含量,以视压实率、视胶结率、视溶蚀率和溶蚀面孔率等成岩参数来定量表征成岩作用强度,共基于该区域铸体薄片划分出7种成岩相,统一将其定义为Ⅰ类成岩相、Ⅱ类成岩相、Ⅲ类成岩相。
2) 基于图像处理划分出的各类成岩相与孔渗数据、孔喉分布特征结合较好,Ⅰ类成岩相孔渗值最高、孔喉结构较优、孔隙更发育、流体具有更多的运移通道;Ⅱ类成岩相由于胶结作用增强,胶结物充填于孔喉中,致使该类成岩相的物性有所降低;Ⅲ类成岩相所受压实作用强烈,使得整体孔渗值较低、孔喉结构较差、孔隙发育较差。
3) 研究区域3类成岩相在GR曲线、AC曲线、CNL曲线)、DEN曲线和电阻率曲线上都有响应。通过多层感知器模型将常规测井数据与不同成岩相建立联系,能进行成岩相测井识别。
4) 运用多层感知器模型开展研究区成岩相测井预测,预测成岩相与实际成岩相结果吻合,预测成岩相符合实际成岩相发育特征,验证了研究提出的成岩相划分与测井识别方法的准确性。

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2026年第16卷第4期
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doi: 10.13809/j.cnki.cn32-1825/te.2024626
  • 接收时间:2025-02-06
  • 首发时间:2026-10-30
  • 出版时间:2026-07-26
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  • 收稿日期:2025-02-06
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    1 西南石油大学地球科学与技术学院,四川   成都 610500
    2 中国石油集团测井有限公司,陕西   西安 710077
    3 中海石油(中国)有限公司深圳分公司,广东   深圳 518054
    4 成都代瑞克能源技术有限责任公司,四川   成都 610500
    5 中国石油青海油田分公司勘探开发研究院,甘肃 敦煌 736202
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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