渤海湾盆地中、新生代火山岩分布及油气藏特征.docxVIP

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第33卷第1期

为油与天然气地及

OILGASGEOLOGY2012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1,乔德武1,淡伟宁2

(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-岩性。中生代火山岩主要发育潜山型油气藏，孔店一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-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—沙四期和海域的沙二—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：TE122.1文献标识码：A

Meso-CenozoicvolcanicrockdistributionandreservoircharacteristicsintheBohaiBayBasin

JinChunshuang1,QiaoDewu1andDanWeining2

(1.SrategicResearchCenterofoilandGasResources,MinisryofLlandandResources,Bejing100034,China;

2.ResearchInstitueofExplorationDevelopment,PetroChinaHuabeiOilfieldCompany,Rengiu,Hebei062552,China)

Abstract:BohaiBayBasinunderwenttworiftingcyclesduringtheMesozoicandCenozoicera,accompaniedbyintenseneutral-acidicandneutral-basalticmagmatism.BasedoncomprehensiveresearchoftheMeso-Cenozoicvolcanicrockdistributionandtheirreservoirtypes,characteristicsandpatterns,thispaperdiscussestheexplora-tionpotentialofvolcanichydrocarbonreservoirsinBohaiBayBasin.TheMesozoic,especiallytheEarlyCreta-ceousvolcanicrockismainlydistributedintheeastofthebasin;theCenozoicmagmatismmaybedividedintofourstages:Kongdian-Sha?,Sha3,Sha2-Dongying,Guantao.Therearethreetypesofvolcanichydrocarbonreser-voirsinthebasin,i.e.buried-hill,faultblockandstratigraphic-lithologichydrocarbonreservoirs.ThefirsttypeismainlydevelopedintheMesozoicvolcanicrocks;thesecondtypeismainlydevelopedinthevolcanicrocksofKongdian-Shastage;thethirdtypeis