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ID:37343309
大小:2.31 MB
页数:9页
时间:2019-05-21
《南海北部边缘盆地油气地质特征及成藏主控因素》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36卷第3期石油察劈沾届Vo1.36,No.32014年5月PETRoLEUMGEoLoGY&EXPERIMENTMay,2014文章编号:1001-6112(2014)03—0337—09doi:10.1178l/sysydz201403337南海北部边缘盆地油气地质特征及成藏主控因素钟佳,周江羽,张莉,陈昱瑶,叶庆峰,齐同胜,张亚萍,王慧(1.中国地质大学构造与油气资源教育部重点实验室,武汉430074;2.国土资源部广州海洋地质调查局,广州510760;3.中国石化胜利石油工程有限公司巴州井下分公司,新疆巴音郭楞蒙古自治州841600)摘要:南
2、海北部边缘盆地发育三套主力烃源岩,包括断陷期湖相和海陆过渡相烃源岩,以及坳陷期海相烃源岩。储层发育“三套两类”,即陆相砂岩、海陆过渡相砂岩以及海相砂岩和碳酸盐岩。断陷期湖相泥岩为较好局部盖层,中新世以来广泛沉积的海相泥岩是良好的区域盖层。圈闭丰富,其类型主要有构造、地层和复合圈闭。南海北部边缘盆地表现出油气共生、阶梯状输导、环洼聚集、断裂控藏的油气成藏特征。分析认为,烃源岩和热场共同控制着南海北部边缘盆地的油气分布;输导体系是油气运移的必经通道,并决定着油气藏层位的分布;此外,环洼分布的构造带是油气运聚的有利指向区。关键词:油气地质;主控因素;油气成藏
3、;边缘盆地;南海北部中图分类号:TEl22文献标识码:AHydrocarbongeologycharacteristicsandkeycontrollingfactorsofmarginalbasinsofnorthernSouthChinaSeaZhongJia,ZhouJiangyu,ZhangLi,ChenYuyao,YeQingfeng,QiTongsheng,ZhangYaping,WangHui(1.KeyLaboratoryofTectonicsandPetroleumResourcesofMin~tryofEducation,China
4、UniversityofGeoscienees,Wuhan,Hubei430074,China;2.GuangzhouMarineGeologicalSurvey,MinistryofLandandResources,Guangzhou,Guangdong510760,China;3.BazhouDownholeServiceBranchofShengliPetroleumEngineeringCorporationLimited,SINOPEC,MongolianAutonomousP咖ctureofBayingolin,Xinjiang841600
5、,China)Abstract:InthemarginalbasinsofthenorthernSouthChinaSea,3setsofmainsourcerocksdeveloped,inclu—dinglacustrineandtransitionalsourcerocksinthetifingperiodandmarinesourcerocksinthedepressionstage.Thereare3setsand2typesofreservoirs,namelycontinentalsandstones,transitionalsandst
6、ones,marinesand.stonesandcarbonaterocks.Thelacustrinemudstoneintheriflingsequenceisfavorablelocalsealandthewide.spreadmarinemudstoneeversinceMioceneisgoodregionalcaprock.Thereareabundanttrapswiththemainstylesofstructural,stratigraphicandcompoundones.Hydrocarbonaccumulationinthes
7、tudyareaisfeaturedbyoilandgascoexistence,step—likemigration,accumulationaroundsags,andfault’Scontroloverhydrocarbonreservoir.OilandgasdistributioninthemarginalbasinsofthenorthernSouthChinaSeaiscontrolledbysourcerocksandgeothermalheatflows.Thetransportationsystem,whichisanessenti
8、alpathwayforhydrocarbonmigration,alsodetermines
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