渤海湾盆地中、新生代火山岩分布及油气藏特征

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1、学兔兔www.xuetutu.com专天气北第33卷第1期OIL&GASGEOLOGY2012年2月文章编号：0253—9985(2012)01—0019—11渤海湾盆地中、新生代火山岩分布及油气藏特征金春爽，乔德武，淡伟宁(1．国土资源部油气资源战略研究中心，北京100034；2．中国石油华北油田分公司勘探开发研究院，河北任丘062552)摘要：渤海湾盆地经历了中、新生代两个裂陷旋回，伴随了很强的中酸性和中基性岩浆活动。通过系统总结盆地内中、新生界火山岩分布及其油气藏类型，火山岩油气藏发育特征及规律，探讨了渤海湾盆地火山岩油气藏的勘探潜力。研究认为：区内中生界火山岩主

2、要分布在盆地东部，以早白垩世为主；新生代岩浆活动可以分为4期，即孔店一沙四期、沙三期、沙二一东营期和馆陶期。盆地火山岩油气藏主要有3种类型：潜山型、断块型和地层一岩性。中生代火山岩主要发育潜山型油气藏，孔店～沙四期火山岩多发育断块型火山岩油气藏，沙三期火山岩所探明的油气储量最多，地层一岩性火山岩油气藏是新生界火山岩中较常见的油气藏类型，溢流相是最有利相带。除沙三期火山岩外，中生代、孔店一沙四期和海域的沙二一东营期火山岩也具有较大的勘探潜力。关键词：中生代；新生代；火山岩；油气藏；渤海湾盆地中图分类号：TEl22．1文献标识码：AMeso-Cenozoicvolcanic

3、rockdistributionandreservoircharacteristicsintheBohaiBayBasinJinChunshuang，QiaoDewuandDanWeining(1·StrategicResearchCenterofOilandGasResources，MinistryofLandandResources，Beijing100034，China；2·ResearchInstituteofExploration&Development，PetroChinaHuabeiOilfieldCompany，Renqiu，Hebei062552，Ch

4、inⅡ)Abstract：BohaiBayBasinunderwenttworiftingcyclesduringtheMesozoicandCenozoicera．acc0mpaniedbvintenseneutral—acidicandneutral—basalticmagmatism．BasedoncomprehensiveresearchoftheMes0．Cen0zoicvolcanicrockdistributionandtheirreservoirtypescharacteristicsandpatterns，thispaperdiscussestheex

5、plora．，tionpotentialofvolcanichydrocarbonreservoirsinBohaiBayBasin．TheMesozoic．especia11vtheEarlvCreta—ceousvolcanicrockismainlydistributedintheeastofthebasin；theCenozoicmagmafismmaybedividedintofourstages：Kongdian—Sha4，Sha，Sha2．Dongying，GuanMo．Therearethreetypesofvolcanichydrocarb0nrese

6、r．voirsinthebasin，i．e．buried—hill，faultblockandstratigraphic．1ithologichydrocarbonreservoirs．ThefirsttypeismainlydevelopedintheMesozoicvolcanicrocks；thesecondtypeismainlydevel0Dedinthev0lcanicrocks0fKongdian-Shastage；thethirdtypeiscommonintheCenozoicvolcanicrocks，0fwhichtheeflusiveflacie

7、sarethemostfavorableforreservoirformation．TheShavolcanicrocksecontributetothegreatestvolume0fDrovenreserves．InadditiontotheShavolcanicrockstheMesozoicKongdian．ShaandoffshoreSha2-Dongyingvolcanic，rocksalsoshowgreatpotentialforpetroleumexploration．Keywords：Mesozoic，Cenozoic