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时间:2020-03-26
《鄂尔多斯盆地安塞油田长10优质储层特征.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第32卷第9期地质通报V01.32.NO.92013年9月GEoLoGICALBULLETINOFCHINASep.,2013鄂尔多斯盆地安塞油田长10优质储层特征李克永,李文厚,张东阳3,严卫宏,陈全红,刘昊伟sLIKe—yong,LIWen—hou,ZHANGDong—yang3,YANWei—honga,CHENQuan—hong4,LIUHao—wei1.西安科技大学期刊中心,陕西西安710054;2.西北大学地质学系,陕西西安710069:3.长庆油田公司勘探部,陕西西安710021;4.中国海洋石油总公司北京研究总院。北京1000275.中国石油勘探开发研究院.北京10008
2、31.PeriodicalCenter,Xi'anUniversityofScienceandTechnology,Xi'an710054,Shaanxi,China,.2.DepartmentofGeology,NorthwestUniversity,Xi'an710069,Shaanxi,China;3.ChangqingOilfieldBranchCompanyofCNPC,Xi'an710021,Shannxi,China;4.CNOOCBeijingGenerdResearchInstitute,BeqinglO002ZChina;5.ResearchInstituteofPe
3、troleumExplorationandDevelopment,Belling100083,China摘要:鄂尔多斯盆地安塞油田长10期发育以细砂岩和中砂岩为主的长石砂岩,胶结物主要有浊沸石、石英加大等硅质胶结物、绿泥石和方解石;在早成岩早期酸性地层水大量溶蚀颗粒间胶结物,压实作用强烈,在中成岩早期,湖相泥岩中生成的酸性介质溶蚀砂岩颗粒间的胶结物及长石和岩屑颗粒碎屑,形成次生溶蚀孔隙,从而形成优质储层。纵向上,在不整合面和层序界面附近,储层溶蚀作用强烈,次生孔隙发育,是优质储层发育部位,向上溶蚀作用逐渐变弱;在平面上,越靠近湖盆中心溶蚀作用越强.越远离湖盆中心溶蚀作用越弱。鄂尔多斯盆地
4、安塞油田长1O优质储层主要发育在三角洲平原高能分流河道发育带,溶蚀作用形成的浊沸石溶蚀孔隙、方解石溶蚀孔隙、长石溶蚀孔隙等次生孔隙成为优质储层形成的有利相带关键词:优质储层;成岩作用:沉积微相;延长组;安塞油田中图分类号:TEl22.221文献标志码:A文章编号:1671—2552(2013)09—1453—08LiKY,LiWH,ZhangDY,YanWH,ChenQH,LiuHW.AnanalysisoffavorablereservoircharacteristicsofChang10FormationintheAnsaioiifield,OrdosBasin.Geological
5、BulletinofChina,2013,32(9):1453—1460Abstract:ThecementsoffeldspathicsandstoneinChang10formationmainlyincludesuchtypesaslaumontite,quartzovergrowth,chloriteandcalcite.Compactionwasintenseinearlydiagenesisbecausetheformationwaterchangedintoacidicmediaandparticleslackedthesupportofcement.Secondarypo
6、reswereformedinMiddlediagenesisbecausetheacidicwaterderivedfromthemudstoneoflakefaciesdissolvedcements,feldspar,andlithicgrainsduringthemigrationprocessfromsourcerockstosandstones,thusformingthefavorablereservoir.Intheverticaldirection,thereservoirdissolutioninunconformityandsequenceboundarywasin
7、tense,andsec—ondaryporesweredeveloped.Upwards,thedissolutiongraduallybecameweaker,andhencesecondaryporeswerenotdeveloped.Intheplane,thedissolutionbecamegraduallyweakerfromthehydrocarboncentertotheshore.Thefavorablerese
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