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ID:36661760
大小:1.55 MB
页数:6页
时间:2019-05-13
《网毯式油气成藏体系在勘探中的应用》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第29卷第6期石油学报Vo1.29No.62008年11月ACTAPETROLEISINICANOV.2008文章编号:0253—2697(2008)06—0791—06网毯式油气成藏体系在勘探中的应用张善文王永诗彭传圣石砥石(1.中国石化胜利油田分公司山东东营257001;2中国石化胜利油田分公司地质科学研究院山东东营257015)摘要:网毯式油气成藏体系是在济阳坳陷30多年油气勘探的实践中,对新近系油气成藏机理研究的基础上提出来的。这种油气运聚方式决定了那些与洼陷内油源断层直接相接的继承性披覆背斜构造带是油气运移成藏的主要部位。在盆缘,如果
2、发育较稳定的盖层,仓储层会形成地层超覆圈闭,在油源大断层发育而次生断层不发育的情况下,油气在仓储层中横向运移后易形成地层超覆油气藏;在盆内,那些与大油源断层直接相接的次生断裂带,或者具备油源断层与仓储层相接、且次生断裂与仓储层和有利储盖组合的储集层相接的区带,可形成岩性油气藏。根据该理论,深入分析了网毯式油气成藏体系各要素,使济阳坳陷的新近系盆缘地层超覆油气藏与盆内岩性油气藏勘探均取得了突破性的进展。关键词:济阳凹陷;网毯式油气成藏体系;新近系;地层超覆油气藏;岩性油气藏中图分类号:TE112.3文献标识码:AApplicationoffaul
3、t—fracturemeshpetroleumplaysinexplorationZHANGShanwenWANGYongshiPENGChuanshengSHIDishi(1.SinopecShengliOilfieldCompany,Dongying257001,China;2.ResearchInstituteofGeologicalScience,SinopecShengliOilfieldCompany,Dongying257015,China)Abstract:Basedonmorethan30years’researchinres
4、ervoirformingmechanismandexplorationpracticeinNeogenesysteminJiy—angDepression,theoryoffault—fracturemeshpetroleumplayswasputforward.Thiskindofoil—gasmigrationandaccumulationpat—terndeterminedthatthoseinheriteddrapinganticlinalstructuralbeltwerefavorableforoilandgastoaccumul
5、ateandeasytoformreservoir.Atbasinmargin,ifcaproekstablydeveloped,stratigraphicoverlaptrapwouldforminstoragelayer.Onconditionofwelldevelopedsourcefaultandbadlydevelopedsecondaryfault。oilandgaswouldmigratelaterallyandformstratigraphicoverlapreser—voir.Asforareainsidethebasin,i
6、fsecondaryfaultbeltwasconnectedwithsourcefault,orstructuralbeltwithsourcefaultcon—nectedstoragelayerandsecondaryfaultnetworkconnectedstoragelayeraswellasfavorablereservoir_caprockassemblage,lithologicreservoirwouldcomeintobeing.Allelementscomposingthetheorywereanalyzed.Witha
7、pplicationofthistheory,breakthroughprogressesweremadeinexplorationofstratigraphicoverlapreservoiratbasinmarginandlithologicreservoirinsidethebasininNeo—genesystemofJiyangDepression.Keywords:JiyangDepression;fault—fracturemeshpetroleumplays;Neogene;stratigraphicoverlapreservo
8、irslithologicreservoir在济阳坳陷新近系勘探过程中,根据洼陷内油源气通过油源断裂网的运移、毯状仓储层的临时仓储及断层与继承性披覆背
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