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ID:37365885
大小:1.26 MB
页数:6页
时间:2019-05-22
《西非里奥穆尼盆地油气成藏条件及勘探方向》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5期石油察劈弛届Vol_36.No.52014年9月PETRoLEUMGE0LOGY&EXPERIMENTSep.,2014文章编号:1001-6112(2014)05—0583—06doi:10.11781/sysydz2Ol4O5583西非里奥穆尼盆地油气成藏条件及勘探方向倪春华,周小进,包建平,段铁军,程建,裴威。(1.长江大学地球环境与水资源学院,武汉430100;2.中国石化石油勘探开发研究院无锡石油地质研究所,江苏无锡214126;3.无锡中关村软件园发展有限公司,江苏无锡214135)摘要:西非里奥穆尼
2、盆地经历了陆内裂谷、陆间裂谷和被动大陆边缘3个构造演化阶段,发育多套烃源岩、储层及泥页岩(盐岩)盖层。以陆间裂谷阶段发育的阿普特盐岩层为界,主要形成盐上、盐下2大含油气系统。盐构造、有利储层控制了盐上含油气系统的有效成藏,优质烃源、盖层则为盐下含油气系统的关键成藏要素。综合分析认为,里奥穆尼盆地的油气勘探重点为盐上的白垩系,应寻找与盐构造相关、浊积砂体发育的构造一地层复合型油气藏;对盐下领域,应重点探索裂谷洼陷生烃中心、阿普特盐岩封盖条件好的地区,并以近源的有利构造作为优先勘探目标。关键词:盆地演化;含油气系统;成藏条件;勘探
3、方向;里奥穆尼盆地;西非中图分类号:TEl22.1文献标识码:APetroleumaccumulationconditionsandexplorationdirection0fRioMuniBasin.WestAfricaNiChunhua’,ZhouXiaojin,BaoJianping,DuanTiejun,ChengJian,PeiWei(1.SchoolofEarthEnvironmentandWaterResources,YangtzeUniversity,Wuhan,Hubei430100,China;2.Wuxi
4、ResearchInstituteofPetroleumGeology,SINOPEC,Wuxi,Jiangsu214126,China;3.WuxZhongguancunSoftwareParkDevelopmentCo.,Ltd.,Wuxi,Jiangsu214135,Cina)Abstract:Basedonthebackgroundofregionalstructuralevolution.thetectono—sedimentaryevolutionofRioMuniBasin,WestAfricacanbedivi
5、dedintothreephases:intracontinentalrift,intercontinenta1riftandpassivecontinentalmargin.Ithasbeenprovedbyexplorationandresearchthattherearemultilayersourcerocks,reser-voirsandcapsinthebasin.WiththeAptianSaltdevelopedintheintracontinentalriftphaseastheinterface,there
6、arepre—saltandpost—saltpetroleumsystems.Itisshowedthatsaltstructuresandfavorablereservoirscontroltheeffectivehydrocarbonaccumulationofthepost—saltsystem,whilehigh—qualitysourcerocksandcapsarethekeyreservoirformingfactorsofthepre-saltsystem.Itisrecognizedbycomprehens
7、iveanalysisthatthepetroleumexplorationfocusshouldbetheCretaceousonthesaltandthecomplexhydrocarbonreservoirswithstructurestra-tigraphywiththedevelopmentofsahstructureandturbiditesandbody.Itissuggestedthatthenear—sourcefavor-ablestructuresarepriorityexplorationtargets
8、tothepre·-saltstratainthearealocatedinthehydrocarbongenera·-tioncenterofriftsag.Keywords:basinevolution;petroleumsystem;reservoir-formingc
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