泌阳凹陷下二门油田烃类包裹体特征及油气成藏期次分析  

Characteristics of Light Hydrocarbon Inclusions and Reservoir Formation Stages of Xia'ermen Oilfield in Biyang Depression

作　　者：吕明久[1] 

机构地区：[1]中石化河南油田分公司勘探事业部,河南南阳473132

出　　处：《石油天然气学报》2010年第6期32-36,共5页Journal of Oil and Gas Technology

基　　金：中国石油化工股份有限公司科技攻关项目(P2008001)

摘　　要：通过采集泌阳凹陷下二门油田古近系核三段岩心样品,对其中烃类包裹体进行了岩矿分析、荧光分析、均一温度测定。分析结果表明,烃类包裹体可以分为3期,与盆地埋藏史和热史研究划分的早、中、晚3个成藏期相对应。根据3期烃类流体包裹体的丰度分布,结合圈闭形成时间和生排烃史综合分析,确定了研究区主成藏期。其中渐新世晚期(核一段沉积末期-廖庄组沉积期)为小规模油气成藏;中新世～上新世早期(廖庄组沉积末期)为主要成藏期,形成大规模原生背斜油气藏;第3期成藏主要是对前两期形成的原生油气藏进行的改造和调整,形成了大量次生油气藏。利用油气包裹体进行油气成藏研究,必须和宿主矿物的矿物岩石学分析及其他成藏期次分析方法结合使用,才能使分析结果更客观可信。Core samples were collected from the third member of Hetaoyuan Formation of Xiaermen Oilfield in Biyang Depression,in which inclusions were studied by petrology analysis,fluoroscopy analysis and uniformity temperature measurement.The results indicate there are three stages of hydrocarbon inclusions,which corresponds to three formation stages of reservoir resulted from basin-history analysis and thermal-history analysis.Hydrocarbon inclusions analysis provides evidence for determining main reservoir forming stages,which indicates that the late Oligocene Stage is a less hydrocarbon formation stage,and Miocene-Pliocene uplift Stage(the end of Liaozhuang Formation)is a main primary hydrocarbon formation stage,The third stage(Before Quaternary Period)mainly produces secondary hydrocarbon reservoir.It is recognized that it would be more reliable to synthesize the results of hydrocarbon inclusions analysis,basin-history analysis and thermal-history analysis.

关 键 词：烃类包裹体 成藏期次 油气成藏 泌阳凹陷 下二门油田 

分 类 号：P618.13[天文地球—矿床学]