Article(id=1307086246208107350, tenantId=1146029695717560320, journalId=1306274195778404443, issueId=1307086088166732376, articleNumber=null, orderNo=null, doi=10.12401/j.nwg.2025166, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1766678400000, receivedDateStr=2025-12-26, revisedDate=1769356800000, revisedDateStr=2026-01-26, acceptedDate=1769616000000, acceptedDateStr=2026-01-29, onlineDate=1789563245583, onlineDateStr=2026-09-16, pubDate=1787155200000, pubDateStr=2026-08-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789563245583, onlineIssueDateStr=2026-09-16, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789563245583, creator=13701087609, updateTime=1789563245583, updator=13701087609, issue=Issue{id=1307086088166732376, tenantId=1146029695717560320, journalId=1306274195778404443, year='2026', volume='59', issue='4', pageStart='1', pageEnd='386', issueExtLink='null', onlineDate='null', pubDate='1787155200000', pubDateStr='2026-08-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1789563207904, creator='13701087609', updateTime=1789616196824, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1307308339885531645, tenantId=1146029695717560320, journalId=1306274195778404443, issueId=1307086088166732376, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1307308339885531646, tenantId=1146029695717560320, journalId=1306274195778404443, issueId=1307086088166732376, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=109, endPage=121, ext={EN=ArticleExt(id=1307086246384268119, articleId=1307086246208107350, tenantId=1146029695717560320, journalId=1306274195778404443, language=EN, title=Research on Deep Tight Sandstone Parameter Prediction Based on XGBoost-MTL, columnId=null, journalTitle=Northwestern Geology, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Accurate prediction of deep tight sandstone reservoir property parameters is essential for reservoir evaluation and sweet spot prediction. However, existing models struggle to fully characterize the complex nonlinear relationships between parameters and cannot achieve simultaneous prediction of multiple parameters. Taking the Yangxia Formation tight sandstone reservoir in the Kuqa Depression of the Tarim Basin's Jurassic System as a case study, this paper conducted high-pressure mercury intrusion and nuclear magnetic resonance experiments on cores to extract reservoir micro-parameters. Average pore throat radius, displacement pressure, fractal dimension, and sorting coefficient are selected as feature parameters. A multi-task learning (MTL) framework was introduced based on a single-task XGBoost model, with an attention mechanism employed to enhance feature selection capabilities. This study proposes a joint prediction model combining Extreme Gradient Boosting (XGBoost) and MTL, suitable for small-sample datasets, to simultaneously predict permeability and porosity. Multiple comparative experiments were conducted to evaluate model performance from multiple perspectives, including prediction accuracy and error metrics. The research findings indicate: ① Both high-pressure mercury intrusion porosimetry and NMR fractal dimension curves exhibit a "three-segment" characteristic, indicating that deep tight sandstone reservoirs possess typical multifractal features; ② The XGBoost-MTL model achieved high correlation coefficients of 0.91 and 0.95 for predicted and actual values in pore-permeability prediction, respectively. Its root mean square error was reduced by approximately 70% compared to the single-task XGBoost model, demonstrating excellent predictive performance; ③ The pore throat scale in the study area is dominated by medium-sized pores. Using the attention score method, it was found that the fractal dimension has the most significant impact on reservoir permeability, while the average pore throat radius has the most significant impact on porosity. This study presents a reliable data-driven approach for predicting the physical properties of deep tight sandstone reservoirs. The findings have been successfully applied in reservoir evaluation of the Yangxia Formation in the Kuqa Depression, with prediction errors controlled within 8.3%. This approach holds significant implications for the efficient development of deep tight sandstone gas reservoirs.
, authors=Youyou CHENG
1, 2, Yini GUO
1, 2, *, Chengqian TAN
1, 2, Yuhong CHENG
3, Shaohua ZHANG
1, 2, Liang LIANG
4, authorsList=Youyou CHENG, Yini GUO, Chengqian TAN, Yuhong CHENG, Shaohua ZHANG, Liang LIANG, authorCompany=null, correspAuthors=Yini GUO, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright © 2026 Northwestern Geology. All rights reserved., 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=1307086254890316690, articleId=1307086246208107350, tenantId=1146029695717560320, journalId=1306274195778404443, language=CN, title=基于XGBoost-MTL的深层致密砂岩储层物性预测研究, columnId=1307086183687811481, journalTitle=西北地质, columnName=人工智能在地质学领域的应用研究, runingTitle=null, highlight=null, articleAbstract=
深层致密砂岩储层物性参数的准确预测对于储层评价和“甜点”预测至关重要,但现有模型难以充分刻画参数之间复杂的非线性关系,且无法实现多参数同时预测。笔者以塔里木盆地库车坳陷侏罗系阳霞组致密砂岩储层为例,对岩心开展高压压汞和核磁共振实验,提取储层微观参数,选取平均孔喉半径、排驱压力、分形维数和分选系数作为特征参数,在单任务XGBoost模型基础上引入了多任务学习(MTL)框架,并使用注意力机制优化特征选择能力,提出了一种适用于小样本数据的基于极限梯度提升(XGBoost)与多任务学习(MTL)的联合预测模型,开展渗透率和孔隙度的同步预测,并设置多组对比实验,从预测精度、误差指标等多角度评估模型性能。研究结果表明:①高压压汞和核磁共振分形维数曲线都呈现出“三段式”特征,指示深层致密砂岩储层具有典型的多重分形特征;②XGBoost-MTL模型在致密砂岩孔渗预测中,预测值与真实值相关性指数分别高达0.91和0.95,均方根误差与单任务XGBoost模型相比降低约70%,表现出良好的预测效果;③研究区孔喉尺度以中孔为主,运用注意力分数方法,发现分形维数对储层渗透率影响最为显著,平均孔喉半径对孔隙度影响最为显著。本研究为深层致密砂岩储层物性预测提供了一种可靠的数据驱动方法,研究成果已在库车坳陷阳霞组储层评价中成功应用,预测误差控制在8.3%以内,对深层致密砂岩气藏高效开发具有重要指导意义。
, authors=成友友
1, 2, 郭怡妮
1, 2, *, 谭成仟
1, 2, 成育红
3, 张少华
1, 2, 梁亮
4, authorsList=成友友, 郭怡妮, 谭成仟, 成育红, 张少华, 梁亮, authorCompany=null, correspAuthors=郭怡妮, authorNote=
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1, 2, address=
1School of Earth Sciences and Engineering, Xi’an Petroleum University, Xi’an 710065, Shaanxi, China
2Shaanxi Key Laboratory of Petroleum Accumulation Geology, Xi’an Petroleum University, Xi’an 710065, Shaanxi, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1307086530917462136, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, authorId=1307086530741301364, language=CN, stringName=成友友, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1西安石油大学地球科学与工程学院,陕西 西安 710065
2西安石油大学,陕西省油气成藏地质学重点实验室,陕西 西安 710065, bio={"content":"
成友友(1988−),男,博士,副教授,长期从事非常规油气藏开发地质与开发工程。E−mail:yycheng@xsyu.edu.cn
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成友友(1988−),男,博士,副教授,长期从事非常规油气藏开发地质与开发工程。E−mail:yycheng@xsyu.edu.cn
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1, 2, *, address=
1School of Earth Sciences and Engineering, Xi’an Petroleum University, Xi’an 710065, Shaanxi, China
2Shaanxi Key Laboratory of Petroleum Accumulation Geology, Xi’an Petroleum University, Xi’an 710065, Shaanxi, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1307086531114594430, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, authorId=1307086530971988090, language=CN, stringName=郭怡妮, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, *, address=
1西安石油大学地球科学与工程学院,陕西 西安 710065
2西安石油大学,陕西省油气成藏地质学重点实验室,陕西 西安 710065, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1307086530409951335, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, xref=1, ext=[AuthorCompanyExt(id=1307086530418339944, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, companyId=1307086530409951335, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1, 2, address=
1School of Earth Sciences and Engineering, Xi’an Petroleum University, Xi’an 710065, Shaanxi, China
2Shaanxi Key Laboratory of Petroleum Accumulation Geology, Xi’an Petroleum University, Xi’an 710065, Shaanxi, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1307086531311726724, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, authorId=1307086531173314688, language=CN, stringName=谭成仟, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1西安石油大学地球科学与工程学院,陕西 西安 710065
2西安石油大学,陕西省油气成藏地质学重点实验室,陕西 西安 710065, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1307086530409951335, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, xref=1, ext=[AuthorCompanyExt(id=1307086530418339944, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, companyId=1307086530409951335, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2西安石油大学,陕西省油气成藏地质学重点实验室,陕西 西安 710065)])]), Author(id=1307086531370446982, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, orderNo=3, 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=1307086531433361544, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, authorId=1307086531370446982, language=EN, stringName=Yuhong CHENG, firstName=Yuhong, middleName=null, lastName=CHENG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, address=
3No.5 Oil Production Plant, PetroChina Changqing Oil Field, Xi’an 710018, Shaanxi, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1307086531500470409, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, authorId=1307086531370446982, language=CN, stringName=成育红, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, address=
3中国石油长庆油田分公司第五采气厂,陕西 西安 710018, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1307086530573529197, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, xref=3, ext=[AuthorCompanyExt(id=1307086530581917806, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, companyId=1307086530573529197, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1, 2, address=
1School of Earth Sciences and Engineering, Xi’an Petroleum University, Xi’an 710065, Shaanxi, China
2Shaanxi Key Laboratory of Petroleum Accumulation Geology, Xi’an Petroleum University, Xi’an 710065, Shaanxi, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1307086531693408399, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, authorId=1307086531554996363, language=CN, stringName=张少华, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1西安石油大学地球科学与工程学院,陕西 西安 710065
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Structural features of the Kuqa depression in the Tarim basin, figureFileSmall=3clrVozRC2AsHUQ1fCS4TQ==, figureFileBig=beHapoHFkUnwIoowni9DKw==, tableContent=null), ArticleFig(id=1307086534432288929, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=图1, caption=
塔里木盆地库车坳陷区域构造(罗威,2026), figureFileSmall=3clrVozRC2AsHUQ1fCS4TQ==, figureFileBig=beHapoHFkUnwIoowni9DKw==, tableContent=null), ArticleFig(id=1307086534532952226, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=EN, label=Fig.2, caption=
Fractal dimension fitting diagram of typical cores by MIP, figureFileSmall=iIF58YbNVyObxS4xR1HjFw==, figureFileBig=Ile5lnp8ir6Gtyrjh6sa3w==, tableContent=null), ArticleFig(id=1307086534595866787, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=图2, caption=
典型岩心压汞分形维数拟合图a. 样品1压汞分形维数;b. 样品4压汞分形维数
, figureFileSmall=iIF58YbNVyObxS4xR1HjFw==, figureFileBig=Ile5lnp8ir6Gtyrjh6sa3w==, tableContent=null), ArticleFig(id=1307086534650392740, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=EN, label=Fig.3, caption=
Fractal dimension fitting diagram of typical cores by NMR, figureFileSmall=PI+NHn2HqiVQZIdTuEABgg==, figureFileBig=ls/QHDqgIm0uTHyokp8AJA==, tableContent=null), ArticleFig(id=1307086534725890213, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=图3, caption=
典型岩心核磁共振分形维数拟合图a. 样品1核磁共振分形维数;b. 样品4核磁共振分形维数
, figureFileSmall=PI+NHn2HqiVQZIdTuEABgg==, figureFileBig=ls/QHDqgIm0uTHyokp8AJA==, tableContent=null), ArticleFig(id=1307086534805581990, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=EN, label=Fig.4, caption=
Micro-pore parameter vs. pore porosity-permeability fitting relationship diagram, figureFileSmall=CzyYzzgsSm0tgpbV9yX3Aw==, figureFileBig=9amAiHxK7spZsA/JqlWJqg==, tableContent=null), ArticleFig(id=1307086534885273767, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=图4, caption=
微观孔隙参数与孔渗拟合关系图a. 平均孔喉半径;b. 排驱压力;c. 分选系数;d. 分形维数
, figureFileSmall=CzyYzzgsSm0tgpbV9yX3Aw==, figureFileBig=9amAiHxK7spZsA/JqlWJqg==, tableContent=null), ArticleFig(id=1307086534969159848, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=EN, label=Fig.5, caption=
XGBoost prediction model framework, figureFileSmall=GfJYRur7gr1UR7fbRFmKfQ==, figureFileBig=5KufjwMKTxbPLWiQnwA4VQ==, tableContent=null), ArticleFig(id=1307086535036268713, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=图5, caption=
XGBoost预测模型框架, figureFileSmall=GfJYRur7gr1UR7fbRFmKfQ==, figureFileBig=5KufjwMKTxbPLWiQnwA4VQ==, tableContent=null), ArticleFig(id=1307086535099183274, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=EN, label=Fig.6, caption=
XGBoost-MTL prediction model framework, figureFileSmall=zjD3lRBFiVW2zIIzPKLKLw==, figureFileBig=UH7ZqKPUnNAhBvP4j4Cvcg==, tableContent=null), ArticleFig(id=1307086535157903531, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=图6, caption=
XGBoost-MTL预测模型总体框架, figureFileSmall=zjD3lRBFiVW2zIIzPKLKLw==, figureFileBig=UH7ZqKPUnNAhBvP4j4Cvcg==, tableContent=null), ArticleFig(id=1307086535225012396, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=EN, label=Fig.7, caption=
Heatmap of hyperparameter combinations and R2, figureFileSmall=i277cWOroGUJ7ObUnqjUuQ==, figureFileBig=3HHUO1p0hZDBxTR8mYY8Cw==, tableContent=null), ArticleFig(id=1307086535287926957, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=图7, caption=
超参数组合与R2的热力关系图, figureFileSmall=i277cWOroGUJ7ObUnqjUuQ==, figureFileBig=3HHUO1p0hZDBxTR8mYY8Cw==, tableContent=null), ArticleFig(id=1307086535359230126, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=EN, label=Fig.8, caption=
Attention layer structure diagram, figureFileSmall=/9PD/+LVVr43KNr7/y+TSw==, figureFileBig=G/mEQ+gXRCtXrVDlzOQ5/g==, tableContent=null), ArticleFig(id=1307086535430533295, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=图8, caption=
注意力层结构图, figureFileSmall=/9PD/+LVVr43KNr7/y+TSw==, figureFileBig=G/mEQ+gXRCtXrVDlzOQ5/g==, tableContent=null), ArticleFig(id=1307086535493447856, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=EN, label=Fig.9, caption=
Porosity-permeability prediction results in different models, figureFileSmall=JAtUVhBpfou4dZhhEI7Tuw==, figureFileBig=0bSKV70tl/wClC0YUJeqwQ==, tableContent=null), ArticleFig(id=1307086535564751026, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=图9, caption=
不同模型孔渗预测效果图a. XGBoost模型;b. XGBoost模型;c. XGBoost-MTL模型;d. XGBoost-MTL模型
, figureFileSmall=JAtUVhBpfou4dZhhEI7Tuw==, figureFileBig=0bSKV70tl/wClC0YUJeqwQ==, tableContent=null), ArticleFig(id=1307086535623471283, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=EN, label=Fig.10, caption=
XGBoost-MTL model training iteration curve, figureFileSmall=JinbB9iJ3j8j3I5ucvrM4w==, figureFileBig=1d7Yn0LAMzmKQ2nIP5RJLA==, tableContent=null), ArticleFig(id=1307086535677997237, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=图10, caption=
XGBoost-MTL模型训练迭代曲线a. 迭代200次;b. 迭代500次;c. 迭代700次
, figureFileSmall=JinbB9iJ3j8j3I5ucvrM4w==, figureFileBig=1d7Yn0LAMzmKQ2nIP5RJLA==, tableContent=null), ArticleFig(id=1307086535740911798, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=EN, label=Fig.11, caption=
Feature importance distribution chart, figureFileSmall=2P08u1dCMR+CJhszXliiYA==, figureFileBig=3AxDw0Oacj0RCCK7e9DhnA==, tableContent=null), ArticleFig(id=1307086535791243447, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=图11, caption=
特征重要性分布图, figureFileSmall=2P08u1dCMR+CJhszXliiYA==, figureFileBig=3AxDw0Oacj0RCCK7e9DhnA==, tableContent=null), ArticleFig(id=1307086535845769401, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=EN, label=Fig.12, caption=
Relationship of fractal dimension and permeability, figureFileSmall=IP8/3wrXuiJAAQdS5fuCRw==, figureFileBig=b/LERUgAyNHoQhK4vtu96g==, tableContent=null), ArticleFig(id=1307086535900295354, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=图12, caption=
分形维数与渗透率关系图a. 小孔隙;b. 中孔隙;c. 大孔隙
, figureFileSmall=IP8/3wrXuiJAAQdS5fuCRw==, figureFileBig=b/LERUgAyNHoQhK4vtu96g==, tableContent=null), ArticleFig(id=1307086535971598523, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=EN, label=Fig.13, caption=
Pore type statistics chart, figureFileSmall=YU6iUgJnOqPBGYt8ffcv2g==, figureFileBig=fODG8ttf79cMc8mtrBYj+w==, tableContent=null), ArticleFig(id=1307086536042901692, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=图13, caption=
孔隙类型统计图, figureFileSmall=YU6iUgJnOqPBGYt8ffcv2g==, figureFileBig=fODG8ttf79cMc8mtrBYj+w==, tableContent=null), ArticleFig(id=1307086536105816253, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=EN, label=Fig.14, caption=
Relationship diagram of dractal dimension and porosity, figureFileSmall=MALO+3aHGEst9+AEADCaVQ==, figureFileBig=LHOyKqNmvz7U4fHbad8XYw==, tableContent=null), ArticleFig(id=1307086536189702334, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=图14, caption=
分形维数与孔隙度关系图a. 小孔隙;b. 中孔隙;c.大孔隙
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Basic information form of sample
, figureFileSmall=null, figureFileBig=null, tableContent=
| 样品编号 | 岩性 | 深度(m) | 层位 | 孔隙度(%) | 渗透率(mD) |
| 1 | 细砂岩 | 4071.2 | J2kz | 9.35 | 0.0501 |
| 2 | 细砂岩 | 4555.7 | J1y | 7.85 | 0.0285 |
| 3 | 中砂岩 | 4674.2 | J1a | 8.92 | 0.0389 |
| 4 | 含油砂岩 | 4676.4 | J1a | 8.05 | 0.0489 |
| 5 | 细砂岩 | 4678.0 | J1a | 7.32 | 0.0456 |
| 6 | 砂岩 | 4681.7 | J1a | 7.80 | 0.0479 |
| 7 | 细砂岩 | 5281.3 | J1y | 10.49 | 0.0315 |
| 8 | 中砂岩 | 5284.9 | J1y | 8.18 | 0.0377 |
| 9 | 粉砂岩 | 5294.0 | J1y | 8.10 | 0.0352 |
| 10 | 粉砂岩 | 5294.7 | J1y | 8.45 | 0.0435 |
), ArticleFig(id=1307086536336502976, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=表1, caption=
岩心样品基本信息表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 样品编号 | 岩性 | 深度(m) | 层位 | 孔隙度(%) | 渗透率(mD) |
| 1 | 细砂岩 | 4071.2 | J2kz | 9.35 | 0.0501 |
| 2 | 细砂岩 | 4555.7 | J1y | 7.85 | 0.0285 |
| 3 | 中砂岩 | 4674.2 | J1a | 8.92 | 0.0389 |
| 4 | 含油砂岩 | 4676.4 | J1a | 8.05 | 0.0489 |
| 5 | 细砂岩 | 4678.0 | J1a | 7.32 | 0.0456 |
| 6 | 砂岩 | 4681.7 | J1a | 7.80 | 0.0479 |
| 7 | 细砂岩 | 5281.3 | J1y | 10.49 | 0.0315 |
| 8 | 中砂岩 | 5284.9 | J1y | 8.18 | 0.0377 |
| 9 | 粉砂岩 | 5294.0 | J1y | 8.10 | 0.0352 |
| 10 | 粉砂岩 | 5294.7 | J1y | 8.45 | 0.0435 |
), ArticleFig(id=1307086536453943489, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=EN, label=Tab.2, caption=
Sample parameter statistics table
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样品 编号 | 渗透率 (mD) | 孔隙度 (%) | 平均孔 喉半径 (μm) | 排驱 压力 (MPa) | 分选 系数 | DNMR |
| 1 | 0.0501 | 9.35 | 0.088 | 1.78 | 2.83 | 2.94 |
| 2 | 0.0285 | 7.85 | 0.048 | 2.38 | 2.59 | 2.93 |
| 3 | 0.0389 | 8.92 | 0.068 | 2.05 | 2.68 | 2.55 |
| 4 | 0.0489 | 8.05 | 0.062 | 2.74 | 2.70 | 2.60 |
| 5 | 0.0456 | 7.32 | 0.041 | 1.98 | 2.52 | 2.55 |
| 6 | 0.0479 | 7.8 | 0.141 | 1.50 | 2.57 | 2.62 |
| 7 | 0.0315 | 10.49 | 0.084 | 1.50 | 2.62 | 2.45 |
| 8 | 0.0377 | 8.18 | 0.041 | 1.99 | 3.11 | 2.55 |
| 9 | 0.0352 | 8.1 | 0.058 | 2.21 | 2.62 | 2.64 |
| 10 | 0.0435 | 8.45 | 0.071 | 1.92 | 2.92 | 2.75 |
), ArticleFig(id=1307086536525246658, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=表2, caption=
样品参数统计表
, figureFileSmall=null, figureFileBig=null, tableContent=
样品 编号 | 渗透率 (mD) | 孔隙度 (%) | 平均孔 喉半径 (μm) | 排驱 压力 (MPa) | 分选 系数 | DNMR |
| 1 | 0.0501 | 9.35 | 0.088 | 1.78 | 2.83 | 2.94 |
| 2 | 0.0285 | 7.85 | 0.048 | 2.38 | 2.59 | 2.93 |
| 3 | 0.0389 | 8.92 | 0.068 | 2.05 | 2.68 | 2.55 |
| 4 | 0.0489 | 8.05 | 0.062 | 2.74 | 2.70 | 2.60 |
| 5 | 0.0456 | 7.32 | 0.041 | 1.98 | 2.52 | 2.55 |
| 6 | 0.0479 | 7.8 | 0.141 | 1.50 | 2.57 | 2.62 |
| 7 | 0.0315 | 10.49 | 0.084 | 1.50 | 2.62 | 2.45 |
| 8 | 0.0377 | 8.18 | 0.041 | 1.99 | 3.11 | 2.55 |
| 9 | 0.0352 | 8.1 | 0.058 | 2.21 | 2.62 | 2.64 |
| 10 | 0.0435 | 8.45 | 0.071 | 1.92 | 2.92 | 2.75 |
), ArticleFig(id=1307086536609132739, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=EN, label=Tab.3, caption=
Model configuration table
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| 超参数名称 | 超参数设置 |
| 损失函数 | RMSE |
| 树最大深度 | 6 |
| 学习率 | 0.02 |
| 迭代次数 | 500 |
| 正则化参数 | 0.1 |
| 树构建方法 | Hist |
), ArticleFig(id=1307086536684630212, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=表3, caption=
预测模型配置表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 超参数名称 | 超参数设置 |
| 损失函数 | RMSE |
| 树最大深度 | 6 |
| 学习率 | 0.02 |
| 迭代次数 | 500 |
| 正则化参数 | 0.1 |
| 树构建方法 | Hist |
), ArticleFig(id=1307086536776904901, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=EN, label=Tab.4, caption=
Prediction Model Evaluation Parameters Table
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| 迭代次数 | 渗透率预测R2 | 孔隙度预测R2 |
| 200 | 0.56 | 0.67 |
| 500 | 0.91 | 0.95 |
| 700 | 0.92 | 0.95 |
), ArticleFig(id=1307086536864985286, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086246208107350, language=CN, label=表4, caption=
预测模型评价参数表
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| 迭代次数 | 渗透率预测R2 | 孔隙度预测R2 |
| 200 | 0.56 | 0.67 |
| 500 | 0.91 | 0.95 |
| 700 | 0.92 | 0.95 |
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