Article(id=1217789889026900971, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1217789884081820362, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2406016, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1723219200000, receivedDateStr=2024-08-10, revisedDate=1744300800000, revisedDateStr=2025-04-11, acceptedDate=null, acceptedDateStr=null, onlineDate=1768273334986, onlineDateStr=2026-01-13, pubDate=1753632000000, pubDateStr=2025-07-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1768273334986, onlineIssueDateStr=2026-01-13, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1768273334986, creator=13701087609, updateTime=1768273334986, updator=13701087609, issue=Issue{id=1217789884081820362, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='21', pageStart='8761', pageEnd='9209', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1768273333807, creator=13701087609, updateTime=1768273602927, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1217791012932604619, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1217789884081820362, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1217791012932604620, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1217789884081820362, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=8858, endPage=8870, ext={EN=ArticleExt(id=1217789890981445758, articleId=1217789889026900971, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=Machine Learning Based Diagenetic Facies Logging Identification: A Case of Shaximiao Formation in Central Sichuan Basin, columnId=1156262729003422020, journalTitle=Science Technology and Engineering, columnName=Papers·Petroleum and Natural Gas Industry, runingTitle=null, highlight=null, articleAbstract=
The complex diagenetic facies of the tight sandstone reservoir in the Shaximiao Formation, located in the Jinqiu gas field to Tianfu gas area in the central Sichuan region, pose significant challenges to reservoir evaluation and natural gas exploration and development. Traditional diagenetic facies identification methods are often low in accuracy, heavily reliant on specialized personnel, and time-consuming. There is an urgent need for a diagenetic facies identification method that is highly accurate, cost-effective, and fast. Firstly, based on cast thin section identification data, the lithology of the tight sandstone was determined using a ternary plot of components. Image processing techniques were then used to identify the types and proportions of pores and cements, and the diagenetic facies of the tight sandstone were classified. Secondly, the corresponding 1 019 depth-based well log data for core-divided diagenetic facies were analyzed in terms of distribution range, median, uniformity, and skewness. These 6 types of well log data were standardized to a 0-1 range, and data imbalance was addressed using synthetic minority over-sampling technique (SMOTE). Finally, 10 traditional machine learning algorithms and ensemble learning algorithms were selected for model training and performance comparison. The study found that ensemble learning algorithms, especially the extreme randomized trees (ET) algorithm, performs best in diagenetic facies identification, achieving higher accuracy and F1 scores than traditional machine learning algorithms. This significantly improved identification accuracy and stability. The ET model was then used to predict the diagenetic facies of the JQ8 well, validating the feasibility of the method. This study provides effective technical methods and references for diagenetic facies research in tight sandstones.
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川中地区金秋气田—天府气区沙溪庙组沙一段致密砂岩储层成岩相复杂,给储层评价与天然气勘探开发造成了较大困扰,但传统成岩相识别方法准确率低、对专业人员依赖性强、耗时长,急需准确率高、成本低、速度快的成岩相识别方法。首先,基于铸体薄片鉴定数据,通过组分三端元图确定了致密砂岩岩性,结合图像处理技术确定了孔隙、胶结物的类型与比例,并划分了致密砂岩成岩相。然后,对岩心划分成岩相数据对应的1 019个深度测井数据进行了分布范围、中位数、均匀性、偏斜性等特征分析,通过标准化将6条测井数据转换到了0~1范围,通过合成少数类过采样技术(synthetic minority over-sampling technique,SMOTE)处理数据不均衡问题。最后,选取传统机器学习算法和集成学习算法中的10种方法模型训练与性能对比。研究发现,集成学习算法(特别是极端随机树算法)在成岩相识别中表现最佳,其准确率和F1分数均高于传统机器学习算法,显著提高了识别精度与稳定性。利用构建的极端随机树算法模型对JQ8井的成岩相进行预测验证,验证了该方法的可行性,为致密砂岩成岩相的研究提供了有效的技术手段和参考。
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, authorsList=曹脊翔, 陈思源, 肖柏夷, 杨曦冉, 罗莹莹, 陈宏, 吴丰)}, authors=[Author(id=1217860113906450970, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=caojixiang@petrochina.com.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1217860114061640234, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, authorId=1217860113906450970, language=EN, stringName=Ji-xiang CAO, firstName=Ji-xiang, middleName=null, lastName=CAO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 Tight Oil and Gas Project Department, PetroChina Southwest Oil and Gas Field Company, Chengdu 610056, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1217860114166497851, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, authorId=1217860113906450970, language=CN, stringName=曹脊翔, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 中石油西南油气田分公司致密油气项目部, 成都 610056, bio={"content":"
曹脊翔(1991—),男,汉族,四川仁寿人,硕士,工程师。研究方向:综合地质。E-mail:caojixiang@petrochina.com.cn。
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曹脊翔(1991—),男,汉族,四川仁寿人,硕士,工程师。研究方向:综合地质。E-mail:caojixiang@petrochina.com.cn。
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2 School of Computer Science and Software Engineering, Southwest Petroleum University, Chengdu 610500, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1217860114632065658, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, authorId=1217860114334270033, language=CN, stringName=陈思源, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2 西南石油大学计算机与软件学院, 成都 610500)])]), Author(id=1217860115932299913, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1217860116041351828, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, authorId=1217860115932299913, language=EN, stringName=Bai-yi XIAO, firstName=Bai-yi, middleName=null, lastName=XIAO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 中石油西南油气田分公司致密油气项目部, 成都 610056, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1217860113273110985, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, xref=1, ext=[AuthorCompanyExt(id=1217860113285693900, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, companyId=1217860113273110985, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3 School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1217860117031207663, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, authorId=1217860116708246223, language=CN, stringName=罗莹莹, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3 西南石油大学地球科学与技术学院, 成都 610500, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1217860113537352173, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, xref=3, ext=[AuthorCompanyExt(id=1217860113558323694, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, companyId=1217860113537352173, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3 西南石油大学地球科学与技术学院, 成都 610500)])]), Author(id=1217860117165425402, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, orderNo=5, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1217860117303837443, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, authorId=1217860117165425402, language=EN, stringName=Hong CHEN, firstName=Hong, middleName=null, lastName=CHEN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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4 Sichuan Rainbow Oil and Gas Field Technology Company, Chengdu 610500, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1217860117408695054, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, authorId=1217860117165425402, language=CN, stringName=陈宏, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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4 四川兆虹油气田技术有限公司, 成都 610500)])]), Author(id=1217860117555495706, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, orderNo=6, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=wufengzh@swpu.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1217860117735850800, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, authorId=1217860117555495706, language=EN, stringName=Feng WU, firstName=Feng, middleName=null, lastName=WU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, 3, *, address=
2 School of Computer Science and Software Engineering, Southwest Petroleum University, Chengdu 610500, China
3 School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1217860117878457148, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, authorId=1217860117555495706, language=CN, stringName=吴丰, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2 西南石油大学计算机与软件学院, 成都 610500
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Leading Edge,
2016,
35(10): 906-909., articleTitle=Facies classification using machine learning, refAbstract=null)], funds=[Fund(id=1217860125889577168, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, awardId=2020YFSY0039, language=CN, fundingSource=四川省重点研发计划(重大科技专项)(2020YFSY0039), fundOrder=null, country=null), Fund(id=1217860126023794906, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, awardId=U20A20266, language=CN, fundingSource=国家自然科学基金区域创新发展联合基金(U20A20266), fundOrder=null, country=null), Fund(id=1217860126178984158, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, awardId=2020CX030103, language=CN, fundingSource=中国石油-西南石油大学创新联合体科技合作项目(2020CX030103), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1217860113273110985, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, xref=1, ext=[AuthorCompanyExt(id=1217860113285693900, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, companyId=1217860113273110985, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 Tight Oil and Gas Project Department, PetroChina Southwest Oil and Gas Field Company, Chengdu 610056, China), AuthorCompanyExt(id=1217860113294082509, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, companyId=1217860113273110985, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 中石油西南油气田分公司致密油气项目部, 成都 610056)]), AuthorCompany(id=1217860113411523034, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, xref=2, ext=[AuthorCompanyExt(id=1217860113415717340, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, companyId=1217860113411523034, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 School of Computer Science and Software Engineering, Southwest Petroleum University, Chengdu 610500, China), AuthorCompanyExt(id=1217860113424105950, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, companyId=1217860113411523034, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 西南石油大学计算机与软件学院, 成都 610500)]), AuthorCompany(id=1217860113537352173, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, xref=3, ext=[AuthorCompanyExt(id=1217860113558323694, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, companyId=1217860113537352173, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China), AuthorCompanyExt(id=1217860113562517999, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, companyId=1217860113537352173, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 西南石油大学地球科学与技术学院, 成都 610500)]), AuthorCompany(id=1217860113734484483, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, xref=4, ext=[AuthorCompanyExt(id=1217860113742873093, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, companyId=1217860113734484483, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4 Sichuan Rainbow Oil and Gas Field Technology Company, Chengdu 610500, China), AuthorCompanyExt(id=1217860113747067398, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, companyId=1217860113734484483, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4 四川兆虹油气田技术有限公司, 成都 610500)])], figs=[ArticleFig(id=1217860120822858692, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=EN, label=Fig.1, caption=
Geographical location, structure, and stratigraphic characteristics from Jinqiu gas field to Tianfu gas area, figureFileSmall=wcYZOZW1pOQWuvC1G/7X2g==, figureFileBig=TExwzYSIxgGJb385ZlDn4g==, tableContent=null), ArticleFig(id=1217860120961270730, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=CN, label=图1, caption=
金秋气田—天府气区地理位置、构造与地层特征, figureFileSmall=wcYZOZW1pOQWuvC1G/7X2g==, figureFileBig=TExwzYSIxgGJb385ZlDn4g==, tableContent=null), ArticleFig(id=1217860121133237204, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=EN, label=Fig.2, caption=
Research process of diagenetic facies identification method, figureFileSmall=GzU99WKV1ZWQ3YFfHUHm/w==, figureFileBig=o2Fz5RhTGmARRCxjLuNVdA==, tableContent=null), ArticleFig(id=1217860121292620771, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=CN, label=图2, caption=
成岩相识别方法研究流程, figureFileSmall=GzU99WKV1ZWQ3YFfHUHm/w==, figureFileBig=o2Fz5RhTGmARRCxjLuNVdA==, tableContent=null), ArticleFig(id=1217860121405866985, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=EN, label=Fig.3, caption=
Lithological ternary map and cast thin film of 3 subsections of the first member of Shaxihe Formation, figureFileSmall=E2KbsBENcmkLYdfhyLXQdQ==, figureFileBig=no+0vEzg81r1bup6aH1Alw==, tableContent=null), ArticleFig(id=1217860121590416375, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=CN, label=图3, caption=
沙一1、沙一2、沙一3亚段岩性三元图与铸体薄片, figureFileSmall=E2KbsBENcmkLYdfhyLXQdQ==, figureFileBig=no+0vEzg81r1bup6aH1Alw==, tableContent=null), ArticleFig(id=1217860121737216005, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=EN, label=Fig.4, caption=
Cast thin sections, pore structures, and cement characteristics of three typical diagenetic phases, figureFileSmall=3Qbc0XFE5AcdUWCpY6FzkQ==, figureFileBig=q4VLQ9loZdOBhfvRzbDb5A==, tableContent=null), ArticleFig(id=1217860121896599566, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=CN, label=图4, caption=
沙一段3种典型成岩相的铸体薄片、孔隙结构与胶结物特征, figureFileSmall=3Qbc0XFE5AcdUWCpY6FzkQ==, figureFileBig=q4VLQ9loZdOBhfvRzbDb5A==, tableContent=null), ArticleFig(id=1217860122081148954, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=EN, label=Fig.5, caption=
Characteristics distribution of three lithofacies logging data, figureFileSmall=DhNLyv5Z8pfpaGDmleg16w==, figureFileBig=mPrwx54rVowtkoK222AFpQ==, tableContent=null), ArticleFig(id=1217860122211172388, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=CN, label=图5, caption=
3种成岩相测井数据特征分布 AC表示声波时差;CNL表示补偿中子;DEN表示密度;GR表示自然伽马;KTH表示无铀伽马;RT表示电阻率;1 μs/ft=3.28 μs/m
, figureFileSmall=DhNLyv5Z8pfpaGDmleg16w==, figureFileBig=mPrwx54rVowtkoK222AFpQ==, tableContent=null), ArticleFig(id=1217860122299252781, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=EN, label=Fig.6, caption=
Classification of data processing for three types of lithological facies samples, figureFileSmall=jJMqtaMnSR2/qnsuAcmXfQ==, figureFileBig=AW3WAg9jmrN4RwPhosOodQ==, tableContent=null), ArticleFig(id=1217860122563493953, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=CN, label=图6, caption=
3种成岩相样本数据处理划分, figureFileSmall=jJMqtaMnSR2/qnsuAcmXfQ==, figureFileBig=AW3WAg9jmrN4RwPhosOodQ==, tableContent=null), ArticleFig(id=1217860122697711691, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=EN, label=Fig.7, caption=
Comparison of accuracy and F1 score of algorithms before and after sampling three types of diagenetic facies, figureFileSmall=rAzguPw4jyCllFa2AssI6A==, figureFileBig=XiHSEQybDWz4/eWG+1mNaA==, tableContent=null), ArticleFig(id=1217860122810957908, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=CN, label=图7, caption=
3种成岩相采样前后算法准确率、F1分数对比, figureFileSmall=rAzguPw4jyCllFa2AssI6A==, figureFileBig=XiHSEQybDWz4/eWG+1mNaA==, tableContent=null), ArticleFig(id=1217860122966147164, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=EN, label=Fig.8, caption=
Comparison of confusion matrices before and after sampling for extra trees, random forest, and CatBoost algorithms, figureFileSmall=kti3Fxp5YIIFmPo3KZE0Zw==, figureFileBig=EbhDqyUvYWR2UVyJozU52g==, tableContent=null), ArticleFig(id=1217860123087781990, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=CN, label=图8, caption=
极端随机树、随机森林和梯度提升决策树算法采样前后混淆矩阵对比, figureFileSmall=kti3Fxp5YIIFmPo3KZE0Zw==, figureFileBig=EbhDqyUvYWR2UVyJozU52g==, tableContent=null), ArticleFig(id=1217860123196833904, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=EN, label=Fig.9, caption=
Thermal map of classification performance of extra trees, random forest, and CatBoost algorithms, figureFileSmall=336eSiDYGAyofNKhvsaKOA==, figureFileBig=qeoFPAacLPdzgg6n9m4EpQ==, tableContent=null), ArticleFig(id=1217860123444297853, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=CN, label=图9, caption=
极端随机树、随机森林和梯度提升决策树算法分类性能热力图, figureFileSmall=336eSiDYGAyofNKhvsaKOA==, figureFileBig=qeoFPAacLPdzgg6n9m4EpQ==, tableContent=null), ArticleFig(id=1217860123574321289, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=EN, label=Fig.10, caption=
ROC curves of extra trees, random forest, and CatBoost algorithms, figureFileSmall=/5nkFKMgFWlKpyh6cXN+WA==, figureFileBig=wI/mb5LIJKaUtXUosgBfiw==, tableContent=null), ArticleFig(id=1217860123691761810, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=CN, label=图10, caption=
极端随机树、随机森林和梯度提升决策树算法ROC曲线 FPR为多数类被错误分类的比率;TPR为召回率
, figureFileSmall=/5nkFKMgFWlKpyh6cXN+WA==, figureFileBig=wI/mb5LIJKaUtXUosgBfiw==, tableContent=null), ArticleFig(id=1217860123817590941, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=EN, label=Fig.11, caption=
Identification effect diagram of diagenetic facies in JQ8 well, figureFileSmall=aFDL4sAv0pWmfFTxOfzV0Q==, figureFileBig=pXGeZVtIhwtKv/PjRBo+3w==, tableContent=null), ArticleFig(id=1217860123951808678, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=CN, label=图11, caption=
JQ8井成岩相识别效果图, figureFileSmall=aFDL4sAv0pWmfFTxOfzV0Q==, figureFileBig=pXGeZVtIhwtKv/PjRBo+3w==, tableContent=null), ArticleFig(id=1217860125310763180, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=EN, label=Table 1, caption=
Sample data distribution table
, figureFileSmall=null, figureFileBig=null, tableContent=
| 成岩相类型 | 原始数据 | 训练集 | 测试集 | 采样后训练集 |
| 钙质胶结 | 88 | 70 | 18 | 519 |
| 浊沸石胶结 | 282 | 226 | 56 | 519 |
弱压实强 长石溶蚀 | 649 | 519 | 130 | 519 |
| 合计 | 1 019 | 815 | 204 | 1 557 |
| 整体百分比/% | 100 | 79.98 | 20.02 | — |
), ArticleFig(id=1217860125403037874, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=CN, label=表1, caption=
样本数据分布表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 成岩相类型 | 原始数据 | 训练集 | 测试集 | 采样后训练集 |
| 钙质胶结 | 88 | 70 | 18 | 519 |
| 浊沸石胶结 | 282 | 226 | 56 | 519 |
弱压实强 长石溶蚀 | 649 | 519 | 130 | 519 |
| 合计 | 1 019 | 815 | 204 | 1 557 |
| 整体百分比/% | 100 | 79.98 | 20.02 | — |
), ArticleFig(id=1217860125503701177, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=EN, label=Table 2, caption=
Comparison of model accuracy before and after data sampling
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 是否 采样 | 极端 随机树 | 随机 森林 | 梯度提升 决策树 |
| 总准确率/% | 否 | 87.2 | 84.3 | 84.8 |
| 是 | 85.7 | 82.3 | 80.8 |
| 浮动范围/% | — | -0.15 | -2 | -4 |
| 钙质胶结准确率/% | 否 | 55.5 | 55.5 | 61.1 |
| 是 | 88.8 | 83.3 | 88.8 |
| 浮动范围/% | — | +33.3 | +27.8 | 27.7 |
| 浊沸石胶结准确率/% | 否 | 82.1 | 78.5 | 75 |
| 是 | 83.9 | 76.7 | 76.7 |
| 浮动范围/% | — | +0.18 | -0.18 | -0.17 |
弱压实强长石溶蚀 准确率/% | 否 | 93.8 | 90.7 | 92.3 |
| 是 | 86.1 | 84.6 | 81.5 |
| 浮动范围/% | — | -7.7 | -6.1 | -10.8 |
), ArticleFig(id=1217860125595975874, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1217789889026900971, language=CN, label=表2, caption=
数据采样前后模型准确率对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 是否 采样 | 极端 随机树 | 随机 森林 | 梯度提升 决策树 |
| 总准确率/% | 否 | 87.2 | 84.3 | 84.8 |
| 是 | 85.7 | 82.3 | 80.8 |
| 浮动范围/% | — | -0.15 | -2 | -4 |
| 钙质胶结准确率/% | 否 | 55.5 | 55.5 | 61.1 |
| 是 | 88.8 | 83.3 | 88.8 |
| 浮动范围/% | — | +33.3 | +27.8 | 27.7 |
| 浊沸石胶结准确率/% | 否 | 82.1 | 78.5 | 75 |
| 是 | 83.9 | 76.7 | 76.7 |
| 浮动范围/% | — | +0.18 | -0.18 | -0.17 |
弱压实强长石溶蚀 准确率/% | 否 | 93.8 | 90.7 | 92.3 |
| 是 | 86.1 | 84.6 | 81.5 |
| 浮动范围/% | — | -7.7 | -6.1 | -10.8 |
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