Article(id=1149776904527504111, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149776900194791454, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2404203, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1717516800000, receivedDateStr=2024-06-05, revisedDate=1727193600000, revisedDateStr=2024-09-25, acceptedDate=null, acceptedDateStr=null, onlineDate=1752057775860, onlineDateStr=2025-07-09, pubDate=1744905600000, pubDateStr=2025-04-18, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752057775860, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752057775860, creator=13701087609, updateTime=1752057775860, updator=13701087609, issue=Issue{id=1149776900194791454, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='11', pageStart='4397', pageEnd='4826', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752057774827, creator=13701087609, updateTime=1768456666677, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1218558837930512931, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149776900194791454, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1218558837930512932, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149776900194791454, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=4515, endPage=4525, ext={EN=ArticleExt(id=1149776904737219312, articleId=1149776904527504111, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=Effects of Different Types of Tight Gas Sweet Spots on Horizontal Well Fracturing Productivity, columnId=1156262729003422020, journalTitle=Science Technology and Engineering, columnName=Papers·Petroleum and Natural Gas Industry, runingTitle=null, highlight=null, articleAbstract=
The small pore throat radius, high starting pressure gradient, poor formation physical property and large gas production difference of horizontal wells after fracturing in tight sandstone reservoirs seriously affect the increase of tight gas reserves and production. In view of the above problems, the production dynamics of gas wells under different levels of sweet spots in the eastern Ordos Basin were analyzed, and a new tight gas fracturing method based on sweet spot distribution was proposed. Based on the evaluation of rock mechanics parameters, energy storage coefficient and argillaceous content parameters, the evaluation model of geological sweet spot and engineering sweet spot was established, and the reservoir quality of tight sandstone gas reservoir was divided by fuzzy comprehensive evaluation method. According to different sweet spot types, the production characteristics and sweet spot distribution characteristics of Class I, II and III horizontal wells were summarized, and three fracturing modes based on geological sweet spot and engineering sweet spot were formed. The results show that when the horizontal well is drilled in Class I geological sweet spot and Class I engineering sweet spot, the cumulative gas production is higher than expected (Class I well), and a larger fracturing scale and displacement can be adopted to maximize the economic benefit (Model 1). When the horizontal well is drilled in Class I geological sweet spot and Class II engineering sweet spot combination, the cumulative gas production is lower than Class I well (Class II well), and the fracturing scale should be reduced appropriately to pursue a certain production capacity and economic benefit (Model 2). When horizontal wells are drilled in geological sweet spots below Class II and combinations of Class I/II engineering sweet spots, the production effect is the worst (Class III wells), and the fracturing scale should be controlled by reducing displacement to avoid the fracture from entering the risk layer and obtain a certain production rate (Model 3). The above new fracturing method was applied to a newly drilled horizontal well in a tight gas reservoir, and the open flow and gas production of the horizontal well after fracturing reached the expectation, which has certain guiding significance for the development of tight sandstone gas reservoir.
, correspAuthors=Mao JIANG, 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, authorCompany=null, fund=null, authors=null, authorsList=Mao JIANG, Jian-shu WU, Cheng-yong PENG, Wei-yun MA, Yu-hu BAI, Fan YANG), CN=ArticleExt(id=1149776941756146599, articleId=1149776904527504111, tenantId=1146029695717560320, journalId=1146123166801305609, language=CN, title=致密气不同类型甜点对水平井压裂产能影响规律, columnId=1156262729603207500, journalTitle=科学技术与工程, columnName=论文·石油、天然气工业, runingTitle=null, highlight=null, articleAbstract=
致密砂岩储层孔喉半径偏小,启动压力梯度偏高,地层物性差,压裂施工后的水平井产气量差异大,严重影响着致密气的增储上产。针对上述问题,分析了鄂尔多斯东缘盆地不同级别甜点下的气井生产动态,并提出了基于甜点展布的致密气压裂新方法。在岩石力学参数、储能系数及泥质含量参数评价的基础上,建立地质甜点及工程甜点评价模型,运用模糊综合评判方法划分了致密砂岩气藏储层品质。根据不同的甜点类型组合,总结了Ⅰ、Ⅱ、Ⅲ类水平井生产特征及甜点分布特征,形成了基于地质甜点工程甜点的3类压裂模式。结果表明:当水平井钻遇Ⅰ类地质甜点及Ⅰ类工程甜点时,则累计产气量高于预期(Ⅰ类井),可采用较大的压裂规模及排量,追求经济效益最大化(模式1);当水平井钻遇I类地质甜点及Ⅱ类以下工程甜点组合时,其累计产气量低于Ⅰ类井(Ⅱ类井),压裂规模应适当降低,追求一定的产能和经济效益(模式2);当水平井钻遇Ⅱ类以下地质甜点及Ⅰ/Ⅱ类工程甜点组合时,生产效果最差(Ⅲ类井),需降低排量控制压裂规模,避免裂缝窜入风险层,获得一定的产能(模式3)。上述压裂新方法应用于致密气藏一口新钻水平井中,该水平井压后无阻流量及产气量均达到预期,对致密砂岩气藏的开发具有一定的指导意义。
, correspAuthors=江锚, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=JT4AVFpW7jY/+ERZHv0TjA==, magXml=jIjvuYBjBivrC4Ci96812Q==, pdfUrl=null, pdf=h0rH8i3lSM/HPo3ov0HCCA==, pdfFileSize=12485884, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=bfgITjSvezkt3FFHsRG5rQ==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=P4u/db/HmANrWPnvN1NAIQ==, mapNumber=null, authorCompany=null, fund=null, authors=
, authorsList=江锚, 吴建树, 彭成勇, 马伟云, 白玉湖, 杨帆)}, authors=[Author(id=1218843905932575422, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=jiangmao@cnooc.com.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1218843906108736207, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, authorId=1218843905932575422, language=EN, stringName=Mao JIANG, firstName=Mao, middleName=null, lastName=JIANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 CNOOC Research Institute Co., Ltd., Beijing 100028, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1218843906226176728, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, authorId=1218843905932575422, language=CN, stringName=江锚, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 中海油研究总院有限责任公司, 北京 100028, bio={"content":"
江锚(1994—),男,汉族,湖北潜江人,硕士,工程师。研究方向:油气田储层改造工作。E-mail:jiangmao@cnooc.com.cn。
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江锚(1994—),男,汉族,湖北潜江人,硕士,工程师。研究方向:油气田储层改造工作。E-mail:jiangmao@cnooc.com.cn。
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1 CNOOC Research Institute Co., Ltd., Beijing 100028, China
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1 中海油研究总院有限责任公司, 北京 100028
2 海洋油气高效开发全国重点实验室, 北京 102209, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1218843905416675979, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, xref=1, ext=[AuthorCompanyExt(id=1218843905425064589, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, companyId=1218843905416675979, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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32(3): 77-85., articleTitle=Optimization method of fracture parameters for horizontal well fracturing in tight reservoir, refAbstract=null)], funds=[Fund(id=1218843916284117602, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, awardId=42130803, language=CN, fundingSource=国家自然科学基金(42130803), fundOrder=null, country=null), Fund(id=1218843916414141038, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, awardId=51704324, language=CN, fundingSource=国家自然科学基金(51704324), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1218843905416675979, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, xref=1, ext=[AuthorCompanyExt(id=1218843905425064589, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, companyId=1218843905416675979, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2 海洋油气高效开发全国重点实验室, 北京 102209)]), AuthorCompany(id=1218843905802551984, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, xref=3, ext=[AuthorCompanyExt(id=1218843905806746289, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, companyId=1218843905802551984, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 China United Coal Bed Methane Co., Ltd., Beijing 100011, China), AuthorCompanyExt(id=1218843905819329203, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, companyId=1218843905802551984, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 中联煤层气有限责任公司, 北京100011)])], figs=[ArticleFig(id=1218843910730858604, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Fig.1, caption=
Column diagram of open flow rate of horizontal well gas test in tight reservoir, figureFileSmall=HDRZH+PIanOv9ygSzwASzg==, figureFileBig=/cCZGN4cmkiB9txd3NPmCQ==, tableContent=null), ArticleFig(id=1218843910886047870, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=图1, caption=
致密储层水平井试气无阻流量柱状图, figureFileSmall=HDRZH+PIanOv9ygSzwASzg==, figureFileBig=/cCZGN4cmkiB9txd3NPmCQ==, tableContent=null), ArticleFig(id=1218843911095763097, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Fig.2, caption=
Cumulative gas production curve of horizontal well in tight reservoir, figureFileSmall=79QJU+x95qiNFo2D8fb1rw==, figureFileBig=G8AEi99RTbIxgj2UFdytfw==, tableContent=null), ArticleFig(id=1218843911213203623, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=图2, caption=
致密储层水平井累计产气量曲线图, figureFileSmall=79QJU+x95qiNFo2D8fb1rw==, figureFileBig=G8AEi99RTbIxgj2UFdytfw==, tableContent=null), ArticleFig(id=1218843911318061233, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Fig.3, caption=
Correlation chart between geological sweet spot evaluation index and open flow rate of single layer gas well with tight reservoir, figureFileSmall=bhWuWgosMnZFMwLzFP+cWg==, figureFileBig=ym4hNWaC7QOlfXMk2C5ffw==, tableContent=null), ArticleFig(id=1218843911435501762, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=图3, caption=
致密储层单层开发气井地质甜点评价指标与无阻流量相关性图表, figureFileSmall=bhWuWgosMnZFMwLzFP+cWg==, figureFileBig=ym4hNWaC7QOlfXMk2C5ffw==, tableContent=null), ArticleFig(id=1218843911586496723, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Fig.4, caption=
Correlation chart between sweet spot evaluation index and open flow rate of gas well in single layer development of tight reservoir, figureFileSmall=QxODStjIs/caK9iVvHArSA==, figureFileBig=VJjLbHb6Zk51d/uCNUBjkA==, tableContent=null), ArticleFig(id=1218843911750074598, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=图4, caption=
致密储层单层开发气井工程甜点评价指标与无阻流量相关性图表, figureFileSmall=QxODStjIs/caK9iVvHArSA==, figureFileBig=VJjLbHb6Zk51d/uCNUBjkA==, tableContent=null), ArticleFig(id=1218843911892680943, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Fig.5, caption=
3D data volume of geological sweet spot evaluation results of tight sandstone reservoir, figureFileSmall=gHzzFFwai1/LJjkM6KGDyA==, figureFileBig=pOdbs976R98YLbnXQaRfhQ==, tableContent=null), ArticleFig(id=1218843912014315774, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=图5, caption=
致密砂岩储层地质甜点评价结果三维数据体, figureFileSmall=gHzzFFwai1/LJjkM6KGDyA==, figureFileBig=pOdbs976R98YLbnXQaRfhQ==, tableContent=null), ArticleFig(id=1218843912102396169, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Fig.6, caption=
3D data volume of engineering sweet spot evaluation results of tight sandstone reservoir, figureFileSmall=1mU28AWCEihUICYSkpTv2g==, figureFileBig=67/SYhLUFaJPIay0Qbpstg==, tableContent=null), ArticleFig(id=1218843912257585433, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=图6, caption=
致密砂岩储层工程甜点评价结果三维数据体, figureFileSmall=1mU28AWCEihUICYSkpTv2g==, figureFileBig=67/SYhLUFaJPIay0Qbpstg==, tableContent=null), ArticleFig(id=1218843912404386091, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Fig.7, caption=
Correlation chart between 300 d cumulative gas production of tight gas and Class I geological sweet spot, figureFileSmall=kvzCqrDpuJlht8wrH+4taQ==, figureFileBig=pnk+se68JChb9P+iHszGXg==, tableContent=null), ArticleFig(id=1218843912509243705, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=图7, caption=
致密气300 d累计产气量与Ⅰ类地质甜点相关性图表, figureFileSmall=kvzCqrDpuJlht8wrH+4taQ==, figureFileBig=pnk+se68JChb9P+iHszGXg==, tableContent=null), ArticleFig(id=1218843912609907011, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Fig.8, caption=
Correlation chart between 300 d cumulative gas production of tight gas and Class I engineering sweet spot, figureFileSmall=XgZTeRcsPGUZLDydkmmCMQ==, figureFileBig=lST6BBmx+gbCV8MmvwUqiA==, tableContent=null), ArticleFig(id=1218843912731541841, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=图8, caption=
致密气300 d累计产气量与Ⅰ类工程甜点相关性图表, figureFileSmall=XgZTeRcsPGUZLDydkmmCMQ==, figureFileBig=lST6BBmx+gbCV8MmvwUqiA==, tableContent=null), ArticleFig(id=1218843912853176667, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Fig.9, caption=
Line chart of daily gas production of 3 typical horizontal Wells (production time: 300 d), figureFileSmall=BWPQfWp2npQKWOGQ62tfZw==, figureFileBig=8sUxuNSDN8n3KkVFLIVh9A==, tableContent=null), ArticleFig(id=1218843912958034278, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=图9, caption=
三口典型水平井日产气量折线图(生产时间300 d), figureFileSmall=BWPQfWp2npQKWOGQ62tfZw==, figureFileBig=8sUxuNSDN8n3KkVFLIVh9A==, tableContent=null), ArticleFig(id=1218843913104834925, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Fig.10, caption=
The proportion of different types of sweet spots in typical Wells in tight sandstone reservoirs, figureFileSmall=pDjm+C5n9CZe+Fyv4BziKA==, figureFileBig=CYMGLCyqXLIOBc9O8PFkZA==, tableContent=null), ArticleFig(id=1218843913213886837, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=图10, caption=
致密砂岩储层典型井不同类型甜点所占比例, figureFileSmall=pDjm+C5n9CZe+Fyv4BziKA==, figureFileBig=CYMGLCyqXLIOBc9O8PFkZA==, tableContent=null), ArticleFig(id=1218843913482322308, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Fig.11, caption=
Numerical simulation grid for unstructured gas reservoirs in tight sandstone reservoirs, figureFileSmall=MvNAL6R1IkyTfmHHaa75Aw==, figureFileBig=HoGgFfeuRA4wTUpyZuWRKw==, tableContent=null), ArticleFig(id=1218843913587179912, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=图11, caption=
致密砂岩储层非结构化气藏数值模拟网格, figureFileSmall=MvNAL6R1IkyTfmHHaa75Aw==, figureFileBig=HoGgFfeuRA4wTUpyZuWRKw==, tableContent=null), ArticleFig(id=1218843913746563479, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Fig.12, caption=
Cumulative gas production, NPV value change curve and total fracture contact area of Class I horizontal wells in tight sandstone reservoir, figureFileSmall=NBE2bUSioE7FA9Jmii+0jg==, figureFileBig=4014/jYd+mWk4KXQ8TPpzQ==, tableContent=null), ArticleFig(id=1218843913922724259, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=图12, caption=
致密砂岩储层Ⅰ类水平井累计产气量、NPV值变化曲线及裂缝总接触面积, figureFileSmall=NBE2bUSioE7FA9Jmii+0jg==, figureFileBig=4014/jYd+mWk4KXQ8TPpzQ==, tableContent=null), ArticleFig(id=1218843914044359086, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Fig.13, caption=
Cumulative gas production, NPV value change curve and total fracture contact area of Class Ⅱ horizontal wells in tight sandstone reservoir, figureFileSmall=W6Lb19Md6ich+yeqVoyIjw==, figureFileBig=DyVZ8zfreCZPNIUu50d5zA==, tableContent=null), ArticleFig(id=1218843914199548351, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=图13, caption=
致密砂岩储层Ⅱ类水平井累计产气量、NPV值变化曲线及裂缝总接触面积, figureFileSmall=W6Lb19Md6ich+yeqVoyIjw==, figureFileBig=DyVZ8zfreCZPNIUu50d5zA==, tableContent=null), ArticleFig(id=1218843914304405960, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Fig.14, caption=
Cumulative gas production, NPV value change curve and total fracture contact area of Class Ⅲ horizontal wells in tight sandstone reservoir, figureFileSmall=DbCfjUOo82J6WMS4TaccaQ==, figureFileBig=cS/jiZvrcTYxC4clpbcXnw==, tableContent=null), ArticleFig(id=1218843914442818002, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=图14, caption=
致密砂岩储层Ⅲ类水平井累计产气量、NPV值变化曲线及裂缝总接触面积, figureFileSmall=DbCfjUOo82J6WMS4TaccaQ==, figureFileBig=cS/jiZvrcTYxC4clpbcXnw==, tableContent=null), ArticleFig(id=1218843914593812957, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Fig.15, caption=
Simulation results of fracture morphology in full section of 8H horizontal well in tight sandstone reservoir, figureFileSmall=XimCG7whnVhVe6rHzC0oPw==, figureFileBig=aMg9AJ4M2cvLCbe5mmQq0g==, tableContent=null), ArticleFig(id=1218843914749002215, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=图15, caption=
致密砂岩储层8H水平井全井段裂缝形态模拟结果, figureFileSmall=XimCG7whnVhVe6rHzC0oPw==, figureFileBig=aMg9AJ4M2cvLCbe5mmQq0g==, tableContent=null), ArticleFig(id=1218843914895802868, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Fig.16, caption=
Comparison chart of simulated gas production and actual gas production of 8H horizontal well in tight sandstone reservoir, figureFileSmall=ccYqMiTmyvSmd3McShN5UA==, figureFileBig=+iOq/wwMbkZjd7l9uYW1nQ==, tableContent=null), ArticleFig(id=1218843915013243389, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=图16, caption=
致密砂岩储层8H水平井模拟产气量及实际产气量对比图表, figureFileSmall=ccYqMiTmyvSmd3McShN5UA==, figureFileBig=+iOq/wwMbkZjd7l9uYW1nQ==, tableContent=null), ArticleFig(id=1218843915143266821, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Table 1, caption=
Summary of production classification levels of tight gas horizontal wells
, figureFileSmall=null, figureFileBig=null, tableContent=
| 300天累计产气量/104 m3 | 水平井类别 |
| <500(平均日产气量小于16 667 m3) | Ⅲ类水平井 |
| 500~1 500(平均日产气量16 667~50 000 m3) | Ⅱ类水平井 |
| >1 500(平均日产气量大于50 000 m3) | I类水平井 |
), ArticleFig(id=1218843915332010517, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=表1, caption=
致密气水平井产量分类级别汇总表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 300天累计产气量/104 m3 | 水平井类别 |
| <500(平均日产气量小于16 667 m3) | Ⅲ类水平井 |
| 500~1 500(平均日产气量16 667~50 000 m3) | Ⅱ类水平井 |
| >1 500(平均日产气量大于50 000 m3) | I类水平井 |
), ArticleFig(id=1218843915436868123, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Table 2, caption=
Classification criteria for geological and engineering sweet spots of tight gas horizontal wells
, figureFileSmall=null, figureFileBig=null, tableContent=
| 评价指标类型 | 具体评价指标 | 甜点类型 | 评价指标权重/% |
| Ⅰ | Ⅱ | Ⅲ |
| 地质甜点 | 地层储能系数 | 900~1 500 | 200~900 | 5~200 | 62 |
| 泥质含量/% | 5~15 | 15~35 | 35~70 | 38 |
| 工程甜点 | 可压裂性指数/% | 60~90 | 40~60 | 10~40 | 54 |
| 破裂压力梯度/(MPa·m-1) | 0.015~0.017 | 0.017~0.02 | 0.02~0.023 | 46 |
), ArticleFig(id=1218843915529142820, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=表2, caption=
致密气水平井地质甜点及工程甜点划分标准
, figureFileSmall=null, figureFileBig=null, tableContent=
| 评价指标类型 | 具体评价指标 | 甜点类型 | 评价指标权重/% |
| Ⅰ | Ⅱ | Ⅲ |
| 地质甜点 | 地层储能系数 | 900~1 500 | 200~900 | 5~200 | 62 |
| 泥质含量/% | 5~15 | 15~35 | 35~70 | 38 |
| 工程甜点 | 可压裂性指数/% | 60~90 | 40~60 | 10~40 | 54 |
| 破裂压力梯度/(MPa·m-1) | 0.015~0.017 | 0.017~0.02 | 0.02~0.023 | 46 |
), ArticleFig(id=1218843915629806124, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Table 3, caption=
Sweet spot distribution characteristics and productivity curve characteristics of different types of horizontal wells in tight reservoir
, figureFileSmall=null, figureFileBig=null, tableContent=
| 水平井类别 | 甜点分布特征 | 产能曲线特征 | 典型井 |
| I类井 | I类地质甜点+I/Ⅱ类工程甜点 | 初产高、稳产期长、累产高 | C1H、F5H、F8H |
| Ⅱ类井 | I/Ⅱ类地质甜点+Ⅱ/Ⅲ类工程甜点 | 初产较高、稳产期较长、累产较高 | A4H、B2H、B3H |
| Ⅲ类井 | Ⅱ/Ⅲ类地质甜点+I/Ⅱ/Ⅲ类工程甜点 | 初产偏低、稳产期较短、累产较低 | A3H、A2H、B4H |
), ArticleFig(id=1218843915751440950, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=表3, caption=
致密储层不同类型水平井甜点分布特征及产能曲线特征
, figureFileSmall=null, figureFileBig=null, tableContent=
| 水平井类别 | 甜点分布特征 | 产能曲线特征 | 典型井 |
| I类井 | I类地质甜点+I/Ⅱ类工程甜点 | 初产高、稳产期长、累产高 | C1H、F5H、F8H |
| Ⅱ类井 | I/Ⅱ类地质甜点+Ⅱ/Ⅲ类工程甜点 | 初产较高、稳产期较长、累产较高 | A4H、B2H、B3H |
| Ⅲ类井 | Ⅱ/Ⅲ类地质甜点+I/Ⅱ/Ⅲ类工程甜点 | 初产偏低、稳产期较短、累产较低 | A3H、A2H、B4H |
), ArticleFig(id=1218843915868881470, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=EN, label=Table 4, caption=
Comprehensive quality and sweet spot characteristics of different fracturing stages of 8H horizontal well in tight sandstone reservoir
, figureFileSmall=null, figureFileBig=null, tableContent=
| 压裂段编号 | 顶深/m | 底深/m | 段长/m | 综合压裂品质 | 地层及甜点特征 |
| 1 | 3 198.88 | 3 261.77 | 62.89 | 中等 | 泥岩及天然微裂缝较发育,含气性偏差到中等(Ⅱ类水平井甜点特征) |
| 2 | 3 109.70 | 3 198.88 | 89.18 | 优等 | 泥岩较薄,天然微裂缝较发育,含气性好(Ⅰ类水平井甜点特征) |
| 3 | 2 994.80 | 3 109.70 | 114.90 | 中偏优 | 可压性中等偏差,含气性较好,砂体较厚,有零散灰岩(Ⅰ类水平井甜点特征) |
| 4 | 2 894.68 | 2 994.80 | 100.12 | 中偏优 | 可压裂性中等偏好,含气性较好厚砂体(Ⅰ类水平井甜点特征) |
| 5 | 2 797.09 | 2 894.68 | 97.59 | 优等 | 含气性好的厚砂体,可压裂性指数较优(Ⅰ类水平井甜点特征) |
| 6 | 2 692.27 | 2 797.09 | 104.82 | 中偏优 | 井斜角大于92°的复杂井段,较厚砂体的综合甜点井段(Ⅰ类水平井甜点特征) |
| 7 | 2 593.77 | 2 692.27 | 98.50 | 中偏差 | 地震曲率异常段,含气性较好,起裂压力偏高(Ⅱ类水平井甜点特征) |
| 8 | 2 501.25 | 2 593.77 | 92.52 | 中偏差 | 砂泥灰岩叠置砂体,含气性较好,可压裂性指数较低(Ⅱ类水平井甜点特征) |
| 9 | 2 397.67 | 2 501.25 | 103.58 | 中等 | 地震资料曲率异常段,可压性较好且含气条件较差(Ⅱ类水平井甜点特征) |
| 10 | 2 317.90 | 2 397.67 | 79.77 | 偏差 | 砂泥灰岩叠置砂体,可压性差,综合甜点分布零散(Ⅲ类水平井甜点特征) |
), ArticleFig(id=1218843916015682123, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149776904527504111, language=CN, label=表4, caption=
致密砂岩储层8H水平井不同压裂段综合品质及甜点特征
, figureFileSmall=null, figureFileBig=null, tableContent=
| 压裂段编号 | 顶深/m | 底深/m | 段长/m | 综合压裂品质 | 地层及甜点特征 |
| 1 | 3 198.88 | 3 261.77 | 62.89 | 中等 | 泥岩及天然微裂缝较发育,含气性偏差到中等(Ⅱ类水平井甜点特征) |
| 2 | 3 109.70 | 3 198.88 | 89.18 | 优等 | 泥岩较薄,天然微裂缝较发育,含气性好(Ⅰ类水平井甜点特征) |
| 3 | 2 994.80 | 3 109.70 | 114.90 | 中偏优 | 可压性中等偏差,含气性较好,砂体较厚,有零散灰岩(Ⅰ类水平井甜点特征) |
| 4 | 2 894.68 | 2 994.80 | 100.12 | 中偏优 | 可压裂性中等偏好,含气性较好厚砂体(Ⅰ类水平井甜点特征) |
| 5 | 2 797.09 | 2 894.68 | 97.59 | 优等 | 含气性好的厚砂体,可压裂性指数较优(Ⅰ类水平井甜点特征) |
| 6 | 2 692.27 | 2 797.09 | 104.82 | 中偏优 | 井斜角大于92°的复杂井段,较厚砂体的综合甜点井段(Ⅰ类水平井甜点特征) |
| 7 | 2 593.77 | 2 692.27 | 98.50 | 中偏差 | 地震曲率异常段,含气性较好,起裂压力偏高(Ⅱ类水平井甜点特征) |
| 8 | 2 501.25 | 2 593.77 | 92.52 | 中偏差 | 砂泥灰岩叠置砂体,含气性较好,可压裂性指数较低(Ⅱ类水平井甜点特征) |
| 9 | 2 397.67 | 2 501.25 | 103.58 | 中等 | 地震资料曲率异常段,可压性较好且含气条件较差(Ⅱ类水平井甜点特征) |
| 10 | 2 317.90 | 2 397.67 | 79.77 | 偏差 | 砂泥灰岩叠置砂体,可压性差,综合甜点分布零散(Ⅲ类水平井甜点特征) |
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