Article(id=1307086066461209017, tenantId=1146029695717560320, journalId=1306274195778404443, issueId=1307047751552885541, articleNumber=null, orderNo=null, doi=10.12401/j.nwg.2025116, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1748188800000, receivedDateStr=2025-05-26, revisedDate=1754496000000, revisedDateStr=2025-08-07, acceptedDate=1757433600000, acceptedDateStr=2025-09-10, onlineDate=1789563202729, onlineDateStr=2026-09-16, pubDate=1771516800000, pubDateStr=2026-02-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789563202729, onlineIssueDateStr=2026-09-16, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789563202729, creator=13701087609, updateTime=1789563202729, updator=13701087609, issue=Issue{id=1307047751552885541, tenantId=1146029695717560320, journalId=1306274195778404443, year='2026', volume='59', issue='1', pageStart='1', pageEnd='302', issueExtLink='null', onlineDate='null', pubDate='1771516800000', pubDateStr='2026-02-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1789554067743, creator='13701087609', updateTime=1789616259011, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1307308600725099263, tenantId=1146029695717560320, journalId=1306274195778404443, issueId=1307047751552885541, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1307308600725099264, tenantId=1146029695717560320, journalId=1306274195778404443, issueId=1307047751552885541, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=244, endPage=257, ext={EN=ArticleExt(id=1307086066649952698, articleId=1307086066461209017, tenantId=1146029695717560320, journalId=1306274195778404443, language=EN, title=Characteristics of Shanxi Formation Tight Sandstone Reservoir in Yanchuan East Area of Yan'an Gas Field and Prediction of Favorable Areas, columnId=null, journalTitle=Northwestern Geology, columnName=null, runingTitle=null, highlight=null, articleAbstract=
The tight sandstone reservoir of Shanxi Formation in Yanchuan East Area of Yan'an Gas Field has complex petrological characteristics and heterogeneity. Clarifying its reservoir characteristics and favorable area distribution is of great significance for natural gas exploration and development. This article systematically studied the rock composition, pore structure, physical properties, and diagenetic evolution process of the Shanxi Formation reservoir through methods such as rock thin section identification, high-pressure mercury injection experiments, and physical property analysis. The results show that the Shanxi Formation reservoir is mainly composed of lithic quartz sandstone, with an average quartz content of 67.1%~71.8%. Residual intergranular pores, lithic dissolution pores, and microcracks are developed, and the pore throat structure is mainly micro throat type. The overall reservoir is characterized by ultra-low porosity and compactness. The reservoir performance of Shan 2 section is better than that of Shan 1 section, with an average porosity of 4.74% and an average permeability of 0.764 mD. The physical properties of the reservoir are controlled by particle size, plastic rock fragment content, and carbonate cementation, and the physical properties of coarse-grained sandstone and areas with low plastic rock fragment content are better. Based on sedimentary microfacies, sand body distribution, and structural characteristics, it is predicted that the favorable area of Shan 1 is located in the central southern part of the study area, while the favorable area of Shan 2 is distributed in a strip like pattern in the central and northern parts. This study provides geological basis for efficient exploration of tight gas reservoirs in the Shanxi Formation of the Ordos Basin.
, authors=Yaning GAO
1, 2, Shaohua ZHANG
1, 2, *, Zhihao JIANG
1, 2, Long ZHANG
1, 2, authorsList=Yaning GAO, Shaohua ZHANG, Zhihao JIANG, Long ZHANG, authorCompany=null, correspAuthors=Shaohua ZHANG, 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=1307086070798119381, articleId=1307086066461209017, tenantId=1146029695717560320, journalId=1306274195778404443, language=CN, title=延安气田延川东区山西组致密砂岩储层特征及有利区预测, columnId=1307047819974570720, journalTitle=西北地质, columnName=非主题, runingTitle=null, highlight=null, articleAbstract=
延安气田延川东区山西组致密砂岩储层具有复杂的岩石学特征与非均质性,明确其储层特征及有利区分布对天然气勘探开发具有重要意义。笔者通过岩石薄片鉴定、高压压汞实验、物性分析等手段,系统研究了山西组储层的岩石组分、孔隙结构、物性特征及成岩演化过程。结果表明:山西组储层以岩屑石英砂岩为主,石英平均含量为67.1%~71.8%,发育残余粒间孔、岩屑溶孔及微裂缝,孔喉结构以微细喉型为主,储层整体为特低孔、致密特征。山2段储集性能优于山1段,其孔隙度平均为4.74%,渗透率平均为0.764 mD。储层物性受粒度、塑性岩屑含量及碳酸盐胶结作用控制,粗粒砂岩及低塑性岩屑含量区域物性更优。结合沉积微相、砂体展布及构造特征,预测山1段有利区位于研究区中南部,山2段有利区呈条带状分布于中部及北部。本研究为鄂尔多斯盆地山西组致密气藏高效勘探提供了重要地质依据。
, authors=高雅宁
1, 2, 张少华
1, 2, *, 姜志豪
1, 2, 张龙
1, 2, authorsList=高雅宁, 张少华, 姜志豪, 张龙, authorCompany=null, correspAuthors=张少华, authorNote=
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, copyrightStatement=版权所有©《西北地质》编辑部 2026, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=QLDoeBkdnJKKvbFLLDahnA==, magXml=848nafDVtp6/e1VQyd4QiQ==, pdfUrl=null, pdf=VLMapqpD7Fm6jF+gTJwYGg==, pdfFileSize=7218691, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=P3kqHXThLEl5bvilQd1woA==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=EbJlrW2DTCmT0DoVxGxJbQ==, mapNumber=null, fund=null)}, authors=[Author(id=1307086071251104221, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=gaoyaning2000@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1307086071389516256, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, authorId=1307086071251104221, language=EN, stringName=Yaning GAO, firstName=Yaning, middleName=null, lastName=GAO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1School of Earth Science and Engineering, Xi'an University of Petroleum, Xi'an 710065, Shaanxi, China
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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
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":"
高雅宁(1984–),男,讲师,主要从事矿产资源勘查与评价研究。E−mail:gaoyaning2000@163.com
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高雅宁(1984–),男,讲师,主要从事矿产资源勘查与评价研究。E−mail:gaoyaning2000@163.com
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1, 2, *, address=
1School of Earth Science and Engineering, Xi'an University of Petroleum, Xi'an 710065, Shaanxi, China
2Key Laboratory of Oil and Gas Reservoir Geology, Shaanxi Province, Xi'an University of Petroleum, Xi'an 710065, Shaanxi, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1307086071800558055, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, authorId=1307086071599231459, 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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1, 2, address=
1School of Earth Science and Engineering, Xi'an University of Petroleum, Xi'an 710065, Shaanxi, China
2Key Laboratory of Oil and Gas Reservoir Geology, Shaanxi Province, Xi'an University of Petroleum, Xi'an 710065, Shaanxi, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1307086072077382125, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, authorId=1307086071888638441, language=CN, stringName=姜志豪, 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
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1, 2, address=
1School of Earth Science and Engineering, Xi'an University of Petroleum, Xi'an 710065, Shaanxi, China
2Key Laboratory of Oil and Gas Reservoir Geology, Shaanxi Province, Xi'an University of Petroleum, Xi'an 710065, Shaanxi, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1307086072354206195, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, authorId=1307086072169656815, language=CN, stringName=张龙, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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Geophysics, 2021, 86(2): B55−B65., articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1307086071028806102, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, xref=1, ext=[AuthorCompanyExt(id=1307086071045583319, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, companyId=1307086071028806102, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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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)]), AuthorCompany(id=1307086071142052313, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, xref=2, ext=[AuthorCompanyExt(id=1307086071154635226, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, companyId=1307086071142052313, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2Key Laboratory of Oil and Gas Reservoir Geology, Shaanxi Province, Xi'an University of Petroleum, Xi'an 710065, Shaanxi, China), AuthorCompanyExt(id=1307086071163023835, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, companyId=1307086071142052313, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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)])], figs=[ArticleFig(id=1307086074816262652, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Fig.1, caption=
The structural units of the Ordos Basin and comprehensive column chart of Shanxi Formation strata, figureFileSmall=lUuh3lgSu35C0Sxqq0A3PQ==, figureFileBig=P3kqHXThLEl5bvilQd1woA==, tableContent=null), ArticleFig(id=1307086074891760125, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=图1, caption=
鄂尔多斯盆地构造单元及山西组综合柱状图(Jiang et al., 2021;郭兰等,2025)a. 鄂尔多斯盆地构造单元;b. 山西组综合柱状图
, figureFileSmall=lUuh3lgSu35C0Sxqq0A3PQ==, figureFileBig=P3kqHXThLEl5bvilQd1woA==, tableContent=null), ArticleFig(id=1307086075076309502, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Fig.2, caption=
Sandstone Triangular Classification Map of Yanchuan East District, figureFileSmall=nsH8pYvaKrfYwb4fZyEyLA==, figureFileBig=QXT1OpBgUnQGVLA/aij7iw==, tableContent=null), ArticleFig(id=1307086075160195583, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=图2, caption=
延川东区砂岩三角分类图a. 山1段砂岩三角分类图;b. 山2段砂岩三角分类图
, figureFileSmall=nsH8pYvaKrfYwb4fZyEyLA==, figureFileBig=QXT1OpBgUnQGVLA/aij7iw==, tableContent=null), ArticleFig(id=1307086075227304448, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Fig.3, caption=
Microscopic characteristics of Shanxi Formation detrital sandstone, figureFileSmall=vKYcgiVoRwPaKE/rlfEZVQ==, figureFileBig=Cboc5GZgqu6Yt5ZWTPanBg==, tableContent=null), ArticleFig(id=1307086075298607617, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=图3, caption=
山西组碎屑砂岩镜下特征a. 延2065井,山1,细粒岩屑石英砂岩,云母碎屑变形,早期方解石胶结;b. 延2065井,山2,中粒岩屑石英砂岩,石英次生加大边,见少量方解石;c. 延343井,山1,岩屑石英砂岩,强烈压实,变质岩屑含量高,火山岩屑强烈变形;d. 延343井,山1,粗粒岩屑石英砂岩,石英次生加大,岩屑高岭土化和绢云母化;e. 延343井,山1,浅灰色中砂岩,丝状伊利石、叶片状绿泥石、高岭石及粒间孔隙;f. 延343井,山1,浅灰色含气粗砂岩,高岭石填隙物充填粒间孔隙,岩屑石英砂岩,强烈压实,变质岩屑含量高,火山岩屑强烈变形
, figureFileSmall=vKYcgiVoRwPaKE/rlfEZVQ==, figureFileBig=Cboc5GZgqu6Yt5ZWTPanBg==, tableContent=null), ArticleFig(id=1307086075365716482, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Fig.4, caption=
Pore types and development characteristics of Shanxi Formation sandstone casting thin sections in the eastern Yanchuan area, figureFileSmall=FFFC0qwJCH6us+H4DXvuZQ==, figureFileBig=d0Pj40z+53PEQB+bvNH2GQ==, tableContent=null), ArticleFig(id=1307086075445408259, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=图4, caption=
延川东区域山西组砂岩铸体薄片孔隙类型及发育特征a. 延155井,山1,火山岩屑溶孔及少量粒间孔,面孔率6%;b. 延250井,山2,粒间孔及岩屑溶孔,面孔率7%;c. 延155井,山1,火山岩屑溶孔及少量粒间孔,面孔率6%;d. 延338井,山2,粒间孔及少量长石与岩屑溶蚀孔,面孔率5.0%;e. 延343井,山1,少量微裂缝,面孔率1%;f. 延347井,山2,少量微裂缝,面孔率1%
, figureFileSmall=FFFC0qwJCH6us+H4DXvuZQ==, figureFileBig=d0Pj40z+53PEQB+bvNH2GQ==, tableContent=null), ArticleFig(id=1307086075508322820, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Fig.5, caption=
Typical capillary pressure curve of Shanxi Formation reservoir sandstone in Yanchuan east district, figureFileSmall=I/vtvXibyjM2ECmNjVVCEQ==, figureFileBig=gTMYZhKxM8t4+vlbht6WiA==, tableContent=null), ArticleFig(id=1307086075579625989, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=图5, caption=
延川东区山西组储层砂岩典型毛管压力曲线图, figureFileSmall=I/vtvXibyjM2ECmNjVVCEQ==, figureFileBig=gTMYZhKxM8t4+vlbht6WiA==, tableContent=null), ArticleFig(id=1307086075667706374, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Fig.6, caption=
Histogram of physical property distribution of core samples from Shan 1 member of Shanxi Formation in Yanchuan east district, figureFileSmall=RvJ2xn63IQITCOLP5SR86Q==, figureFileBig=FoStDVi98+X5N2G2EkbNpw==, tableContent=null), ArticleFig(id=1307086075743203847, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=图6, caption=
延川东区山西组山1段岩心物性分布直方图a. 孔隙度分布直方图;b. 渗透率分布直方图
, figureFileSmall=RvJ2xn63IQITCOLP5SR86Q==, figureFileBig=FoStDVi98+X5N2G2EkbNpw==, tableContent=null), ArticleFig(id=1307086075818701320, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Fig.7, caption=
Histogram of physical property distribution of core samples from Shan 2 member of Shanxi Formation in Yanchuan east district, figureFileSmall=B1oDZc4NgULVYOROOO3olQ==, figureFileBig=iiPYlLcCjBbyWQyYMIivpw==, tableContent=null), ArticleFig(id=1307086075931947529, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=图7, caption=
延川东区山西组山2段岩心物性分布直方图a. 孔隙度分布直方图;b. 渗透率分布直方图
, figureFileSmall=B1oDZc4NgULVYOROOO3olQ==, figureFileBig=iiPYlLcCjBbyWQyYMIivpw==, tableContent=null), ArticleFig(id=1307086076053582346, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Fig.8, caption=
Statistical chart of the relationship between physical properties and grain size of sandstone in Shanxi Formation, figureFileSmall=twgPkcHSkmeOtXxbR/rLPA==, figureFileBig=RVK7hR/5xbV8ZeNmNOZ/Uw==, tableContent=null), ArticleFig(id=1307086076133274123, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=图8, caption=
山西组储层砂岩物性与粒度关系统计图a. 粗砂岩孔隙度分布直方图;b. 粗砂岩渗透率分布直方图;c. 中砂岩孔隙度分布直方图;d. 中砂岩渗透率分布直方图;e. 细砂岩孔隙度分布直方图;f. 细砂岩渗透率分布直方图
, figureFileSmall=twgPkcHSkmeOtXxbR/rLPA==, figureFileBig=RVK7hR/5xbV8ZeNmNOZ/Uw==, tableContent=null), ArticleFig(id=1307086076242326028, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Fig.9, caption=
Statistical chart of the relationship between physical properties and sandstone lithology in Shanxi Formation, figureFileSmall=2JtwteqqAZDjfY6ufrasJw==, figureFileBig=Xe9AdI0nWusCHG3uYlPpVQ==, tableContent=null), ArticleFig(id=1307086076326212109, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=图9, caption=
山西组储层砂岩岩性与物性关系统计图a. 岩屑石英砂岩孔隙度分布直方图;b. 岩屑石英砂岩渗透率分布直方图;c. 石英砂岩孔隙度分布直方图;d. 石英砂岩渗透率分布直方图;e. 岩屑砂岩孔隙度分布直方图;f. 岩屑砂岩渗透率分布直方图;g. 钙质胶结砂岩孔隙度分布直方图;h. 钙质胶结砂岩渗透率分布直方图
, figureFileSmall=2JtwteqqAZDjfY6ufrasJw==, figureFileBig=Xe9AdI0nWusCHG3uYlPpVQ==, tableContent=null), ArticleFig(id=1307086076405903886, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Fig.10, caption=
The relationship between the content of plastic particle components and physical properties in Shanxi Formation, figureFileSmall=HFGKoAFlqArDULSZEHDmMw==, figureFileBig=X4Ac4I5X2ldedacZLC+u7w==, tableContent=null), ArticleFig(id=1307086076485595663, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=图10, caption=
山西组塑性颗粒组分含量与储层物性的关系a. 火山岩屑含量与孔隙度关系;b. 火山岩屑含量与渗透率关系
, figureFileSmall=HFGKoAFlqArDULSZEHDmMw==, figureFileBig=X4Ac4I5X2ldedacZLC+u7w==, tableContent=null), ArticleFig(id=1307086076565287440, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Fig.11, caption=
The relationship between the carbonate cement content and physical properties in Shanxi Formation, figureFileSmall=tDxhQwRaRvOYK+4WK9jT9A==, figureFileBig=3umWYGY443r3QDTlSzfVPg==, tableContent=null), ArticleFig(id=1307086076640784913, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=图11, caption=
山西组碳酸盐胶结物含量与储层物性的关系a. 碳酸盐胶结物含量与孔隙度关系;b. 碳酸盐胶结物含量与渗透率关系
, figureFileSmall=tDxhQwRaRvOYK+4WK9jT9A==, figureFileBig=3umWYGY443r3QDTlSzfVPg==, tableContent=null), ArticleFig(id=1307086076712088082, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Fig.12, caption=
The relationship between the siliceous cementation content and physical properties in Shanxi Formation, figureFileSmall=fDlIx+oxfaQ/PQ1rAWzHIQ==, figureFileBig=T+cpfSraSgTLwgDPid+J/w==, tableContent=null), ArticleFig(id=1307086076816945683, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=图12, caption=
山西组储层硅质胶结含量与储层物性关系图a. 硅质胶结含量与孔隙度关系;b. 硅质胶结含量与渗透率关系
, figureFileSmall=fDlIx+oxfaQ/PQ1rAWzHIQ==, figureFileBig=T+cpfSraSgTLwgDPid+J/w==, tableContent=null), ArticleFig(id=1307086076896637460, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Fig.13, caption=
Prediction Plan of beneficial reservoir areas in Shanxi Formation of the research area, figureFileSmall=4NlcEbV8I9B1Mu2WG6W0dQ==, figureFileBig=xWidUBGhAE9NNdt5F49QzQ==, tableContent=null), ArticleFig(id=1307086076976329237, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=图13, caption=
研究区山西组储层有利区预测平面图a. 硅质胶结含量与孔隙度关系;b. 硅质胶结含量与渗透率关系
, figureFileSmall=4NlcEbV8I9B1Mu2WG6W0dQ==, figureFileBig=xWidUBGhAE9NNdt5F49QzQ==, tableContent=null), ArticleFig(id=1307086077060215318, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Tab.1, caption=
Data on the content of rock debris components in the Shanxi Formation reservoir in Yanchuan east area
, figureFileSmall=null, figureFileBig=null, tableContent=
| 层位 | 样品数 | 石英(%) | 长石(%) | 岩屑(%) | 填隙物成分(%) |
| 方解石 | 白云石 | 铁白云石 | 菱铁矿 | 粘土矿物 | 硬石膏 | 其它 |
| 山1段 | 45 | 67.11 | 1.27 | 31.62 | 1.81 | 0.40 | 4.18 | 0.98 | 1.95 | 1.15 | 1.13 |
| 山2段 | 20 | 71.77 | 0.01 | 28.14 | 2.96 | 2.04 | 2.23 | 0.47 | 1.94 | 1.04 | 1.42 |
), ArticleFig(id=1307086077144101399, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=表1, caption=
延川东区域山西组储层岩石碎屑成分含量数据表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 层位 | 样品数 | 石英(%) | 长石(%) | 岩屑(%) | 填隙物成分(%) |
| 方解石 | 白云石 | 铁白云石 | 菱铁矿 | 粘土矿物 | 硬石膏 | 其它 |
| 山1段 | 45 | 67.11 | 1.27 | 31.62 | 1.81 | 0.40 | 4.18 | 0.98 | 1.95 | 1.15 | 1.13 |
| 山2段 | 20 | 71.77 | 0.01 | 28.14 | 2.96 | 2.04 | 2.23 | 0.47 | 1.94 | 1.04 | 1.42 |
), ArticleFig(id=1307086077253153304, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Tab.2, caption=
Composition of sandstone cement in Shanxi Formation reservoir in Yanchuan east area
, figureFileSmall=null, figureFileBig=null, tableContent=
| 层位 | 高岭石 (%) | 水云母 (%) | 绿泥石 (%) | 凝灰质 (%) | 铁方 解石 (%) | 铁白 云石 (%) | 硅质 (%) |
| 山1段 | 0.49 | 4.18 | 1.15 | 0.56 | 1.81 | 0.4 | 1.95 |
| 山2段 | 1.27 | 2.23 | 1.04 | 0.15 | 2.96 | 2.04 | 1.94 |
), ArticleFig(id=1307086078897320473, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=表2, caption=
延川东区域山西组储层砂岩胶结物成分表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 层位 | 高岭石 (%) | 水云母 (%) | 绿泥石 (%) | 凝灰质 (%) | 铁方 解石 (%) | 铁白 云石 (%) | 硅质 (%) |
| 山1段 | 0.49 | 4.18 | 1.15 | 0.56 | 1.81 | 0.4 | 1.95 |
| 山2段 | 1.27 | 2.23 | 1.04 | 0.15 | 2.96 | 2.04 | 1.94 |
), ArticleFig(id=1307086078977012250, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Tab.3, caption=
Statistical table of pore types in Shanxi Formation of Yanchuan east area
, figureFileSmall=null, figureFileBig=null, tableContent=
| 层位 | 残余 粒间孔 (%) | 长石 溶孔 (%) | 岩屑 溶孔 (%) | 晶间孔 (%) | 微裂隙 (%) | 面孔率 (%) |
| 山1段 | 0.85 | 0.15 | 2.95 | 0.10 | 0.10 | 3.80 |
| 山2段 | 0.75 | 0.12 | 2.78 | 0.15 | 0.15 | 3.55 |
), ArticleFig(id=1307086079048315419, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=表3, caption=
延川东区域山西组孔隙类型统计表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 层位 | 残余 粒间孔 (%) | 长石 溶孔 (%) | 岩屑 溶孔 (%) | 晶间孔 (%) | 微裂隙 (%) | 面孔率 (%) |
| 山1段 | 0.85 | 0.15 | 2.95 | 0.10 | 0.10 | 3.80 |
| 山2段 | 0.75 | 0.12 | 2.78 | 0.15 | 0.15 | 3.55 |
), ArticleFig(id=1307086079123812892, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Tab.4, caption=
Statistical table of high pressure mercury injection parameters for Shanxi Formation sandstone in Yanchuan east area
, figureFileSmall=null, figureFileBig=null, tableContent=
| 层位 | 样品数 | 孔隙度(%) | 渗透率(mD) | 排驱 压力(MPa) | 中值 压力(MPa) | 中值 半径(μm) | 孔喉 分选系数 | 变异 系数 | 歪度 系数 | 最大进汞 饱和度(%) | 退出 效率(%) |
| 山1段 | 29 | 最小值 | 1.79 | 0.012 | 0.01 | 1.77 | 0.01 | 0.02 | 0.15 | −2.08 | 44.66 | 13.38 |
| 最大值 | 11.57 | 0.747 | 4.10 | 88.72 | 0.90 | 5.10 | 1.87 | 1.93 | 99.04 | 49.98 |
| 平均值 | 4.02 | 0.111 | 1.15 | 30.51 | 0.13 | 2.47 | 0.83 | 1.00 | 72.79 | 38.04 |
| 山2段 | 48 | 最小值 | 1.80 | 0.001 | 0.01 | 4.66 | 0.01 | 1.38 | 0.11 | −1.44 | 36.42 | 8.26 |
| 最大值 | 9.10 | 3.795 | 3.57 | 70.32 | 0.16 | 4.22 | 0.24 | 2.49 | 94.50 | 45.51 |
| 平均值 | 6.51 | 0.764 | 0.63 | 40.01 | 0.05 | 2.19 | 0.16 | 1.30 | 70.72 | 21.81 |
), ArticleFig(id=1307086079241253405, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=表4, caption=
延川东区域山西组砂岩高压压汞参数统计表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 层位 | 样品数 | 孔隙度(%) | 渗透率(mD) | 排驱 压力(MPa) | 中值 压力(MPa) | 中值 半径(μm) | 孔喉 分选系数 | 变异 系数 | 歪度 系数 | 最大进汞 饱和度(%) | 退出 效率(%) |
| 山1段 | 29 | 最小值 | 1.79 | 0.012 | 0.01 | 1.77 | 0.01 | 0.02 | 0.15 | −2.08 | 44.66 | 13.38 |
| 最大值 | 11.57 | 0.747 | 4.10 | 88.72 | 0.90 | 5.10 | 1.87 | 1.93 | 99.04 | 49.98 |
| 平均值 | 4.02 | 0.111 | 1.15 | 30.51 | 0.13 | 2.47 | 0.83 | 1.00 | 72.79 | 38.04 |
| 山2段 | 48 | 最小值 | 1.80 | 0.001 | 0.01 | 4.66 | 0.01 | 1.38 | 0.11 | −1.44 | 36.42 | 8.26 |
| 最大值 | 9.10 | 3.795 | 3.57 | 70.32 | 0.16 | 4.22 | 0.24 | 2.49 | 94.50 | 45.51 |
| 平均值 | 6.51 | 0.764 | 0.63 | 40.01 | 0.05 | 2.19 | 0.16 | 1.30 | 70.72 | 21.81 |
), ArticleFig(id=1307086079341916702, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=EN, label=Tab.5, caption=
Classification and statistics of pore structure types of reservoir sandstone from Shanxi Formation in Yanchuan east area
, figureFileSmall=null, figureFileBig=null, tableContent=
| 储层参数 | 孔隙结构类型 |
| Ⅰ | Ⅱ | Ⅲ | Ⅳ |
| 较细喉型 | 细喉型 | 微细喉型 | 微细喉型 |
| 孔隙度 | 2.10%~9.00% | 1.82%~11.57% | 0.80%~1.63% | 1.79~5.30% |
| 6.33% | 6.27% | 1.07% | 3.19% |
| 渗透率 | 0.057~4.723 mD | 0.016~4.143 mD | 0.012~1.681 mD | 0.003~0.131 mD |
| 0.836 mD | 0.688 mD | 0.257 mD | 0.024 mD |
| 排驱压力 | 0.01~1.74 MPa | 0.01~6.32 MPa | 0.02~1.82 MPa | 0.13~7.61 MPa |
| 0.52 MPa | 0.60 MPa | 0.70 MPa | 1.53 MPa |
| 中值压力 | 0.33~21.21 MPa | 0.27~36.15 MPa | 3.26~88.72 MPa | 50 MPa以上 |
| 3.08 MPa | 4.66 MPa | 43.96 MPa | — |
| 平均喉道半径 | 0.09~11.26 μm | 0.02~6.66 μm | 0.14~0.62 μm | 0.02~0.20 μm |
| 1.73 μm | 1.29 μm | 0.34 μm | 0.13 μm |
| 歪度系数 | −0.22~2.49 | −0.28~2.11 | 0.90~2.69 | −2.08~2.23 |
| 歪度类型 | 粗歪度 | 粗歪度 | 细-粗歪度 | 细歪度 |
| 变异系数 | 0.14~0.33 | 0.11~1.04 | 0.12~0.51 | — |
| 0.18 | 0.30 | 0.27 | — |
| 最大进汞饱和度 | 83.65%~99.04% | 72.90%~95.80% | 63.40%~91.26% | — |
| 92.22% | 83.29% | 78.22% | — |
| 储层特征 | 溶蚀作用强烈,大孔隙和小孔隙共存,喉道粗,连通性好,优质储层 | 溶蚀作用强烈,连通性中等,是较好的储层 | 孔隙较小,分选一般,连通性中等 | 以微孔为主,孔喉小,孔隙连通性差,非有效储层 |
), ArticleFig(id=1307086079442579999, tenantId=1146029695717560320, journalId=1306274195778404443, articleId=1307086066461209017, language=CN, label=表5, caption=
延川东区山西组储层砂岩样品孔隙结构类型分类统计表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 储层参数 | 孔隙结构类型 |
| Ⅰ | Ⅱ | Ⅲ | Ⅳ |
| 较细喉型 | 细喉型 | 微细喉型 | 微细喉型 |
| 孔隙度 | 2.10%~9.00% | 1.82%~11.57% | 0.80%~1.63% | 1.79~5.30% |
| 6.33% | 6.27% | 1.07% | 3.19% |
| 渗透率 | 0.057~4.723 mD | 0.016~4.143 mD | 0.012~1.681 mD | 0.003~0.131 mD |
| 0.836 mD | 0.688 mD | 0.257 mD | 0.024 mD |
| 排驱压力 | 0.01~1.74 MPa | 0.01~6.32 MPa | 0.02~1.82 MPa | 0.13~7.61 MPa |
| 0.52 MPa | 0.60 MPa | 0.70 MPa | 1.53 MPa |
| 中值压力 | 0.33~21.21 MPa | 0.27~36.15 MPa | 3.26~88.72 MPa | 50 MPa以上 |
| 3.08 MPa | 4.66 MPa | 43.96 MPa | — |
| 平均喉道半径 | 0.09~11.26 μm | 0.02~6.66 μm | 0.14~0.62 μm | 0.02~0.20 μm |
| 1.73 μm | 1.29 μm | 0.34 μm | 0.13 μm |
| 歪度系数 | −0.22~2.49 | −0.28~2.11 | 0.90~2.69 | −2.08~2.23 |
| 歪度类型 | 粗歪度 | 粗歪度 | 细-粗歪度 | 细歪度 |
| 变异系数 | 0.14~0.33 | 0.11~1.04 | 0.12~0.51 | — |
| 0.18 | 0.30 | 0.27 | — |
| 最大进汞饱和度 | 83.65%~99.04% | 72.90%~95.80% | 63.40%~91.26% | — |
| 92.22% | 83.29% | 78.22% | — |
| 储层特征 | 溶蚀作用强烈,大孔隙和小孔隙共存,喉道粗,连通性好,优质储层 | 溶蚀作用强烈,连通性中等,是较好的储层 | 孔隙较小,分选一般,连通性中等 | 以微孔为主,孔喉小,孔隙连通性差,非有效储层 |
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