摘要
为了明确济阳坳陷东部富林、青东地区中生界火山岩储层特征,利用岩心、薄片及分析化验资料对该区火山岩进行了研究。研究表明:该区主要发育玄武粗安岩、粗安岩、凝灰岩及火山角砾岩4种火山岩储层岩石类型,玄武粗安岩、粗安岩属高钾钙碱性系列和钾玄岩系列,具有壳幔混源的地球化学特征;该区古火山具有点式喷发的特点,形成的火山岩相以爆发相和溢流相为主,原生储集空间主要为粒间孔和残余气孔,次生储集空间主要为裂缝和基质溶孔;受岩相、构造活动、风化及溶蚀作用、充填作用的控制,火山岩有利储层平面上分布于裂缝发育带与古火山口周缘叠加区域,垂向上发育在风化淋滤带与熔岩顶底冷凝带内。利用研究成果厘定了平面上有利勘探区带,为研究区下一步油气勘探部署奠定了基础。
The core,thin- section and test data are used to characterize the Mesozoic volcanic reservoirs in Fulin and Qingdong of Jiyang Depression. Research illustrates that 4 volcanic reservoir rock types develop in this region,including basaltic trachyandesite,trachyandesite,tuff and volcanic breccia. Basaltic trachyandesite and trachyandesite are classified as high- k calc- alkaline series and shoshonite series,which is characterized by mixing mantle- crust source in geochemistry. The paleovolcanos in this region are featured by point- eruption and the corresponding volcanic lithology mainly includes explosion facies and effusive facies. The primary reservoir space mainly includes intergranular pores and residual pores and the secondary reservoir space mainly include fractures and matrix dissolution holes. The favorable volcanic reservoirs are located in the overlap region between fracture zone and paleovolcanic crater periphery in the plane and are located within karst zone and top and bottom lava condebelt in the longitudinal direction.Result is used to determine the plane favorable exploration zones,which lay a foundation for the further hydrocarbon exploration in this area.
出处
《特种油气藏》
CAS
CSCD
北大核心
2016年第1期44-48,153,共5页
Special Oil & Gas Reservoirs
基金
国家科技重大专项"渤海湾盆地精细勘探关键技术"(2011ZX05006)
中国石油化工股份公司科研攻关项目"济阳坳陷东部中生界油气成藏规律与预测"(P13134)联合资助
关键词
火山岩
岩性
岩相
储集空间
富林、青东地区
济阳坳陷
volcanic rock
lithology
lithofacies
reservoir space
Fulin and Qingdong
Jiyang Depression
