松辽盆地南部乾安北地区扶余油层沉积微相分析  

Sedimentary microfacies analysis of Fuyu oil-bearing layer of north area in Qian-an,south of Songliao Basin

作　　者：陆道林[1,2,3] 狄帮让[1,2,3] 李向阳[1,2,3] 王世瑞 王树平[5] 

机构地区：[1]中国石油大学油气资源与探测国家重点实验室,北京102249 [2]CNPC物探重点实验室,北京102249 [3]中国石油大学地球物理与信息工程学院,北京102249 [4]河北涿州腾龙瑞邦能源科技开发有限公司,河北涿州072751 [5]吉林油田公司物探院,吉林松原210014

出　　处：《中国石油大学学报（自然科学版）》2011年第6期8-13,共6页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：中国石油天然气集团公司科研项目(06A10102)

摘　　要：通过岩心观察和测井曲线分析确定岩石、岩相类型,结合测井相、骨架剖面微相及地震微相分析,对扶余油层4个砂层组的沉积微相展布及演化规律进行系统的研究。结果表明:扶余油层为曲流河、曲流河三角洲沉积体系,主要发育河床滞留沉积、点砂坝、河漫滩、水下分流河道与河口砂坝等沉积微相,其中曲流河道和水下分流河道砂体较发育,为物性较好的储集相带;伴随湖侵水体逐渐加深,河道逐渐由条带到开阔,砂体由零星到连片分布,河道弯曲逐渐萎缩,沉积相带由河流相过渡到河湖交互相。Through core observation and well-logging curve analysis, the types of the rock and lithofacies were determined. And combined with logging facies, matrix section microfacies and seismic microfacies analysis, sedimentary microfacies through-going and evolution laws of four sand formations for Fuyu oil-bearing layer were systematically studied. The results show that the reservoirs belong to meandering river-delta facies deposit, and it is further divided into some microfacies inclu- ding gravel lag-deposit of in-channel, bar point, fluviatile flood-plain, underwater distributary channel and river mouth bar. The meandering river and distributary channel sandbody have the best reservoir property. In addition, the sedimentary facies changes from fluvial facies to river-delta facies with the lake transgression, the meandering river channel becomes much more broad and straight, and the sandbody changes from scattered spread to regional distribution.

关 键 词：石油地质 沉积学 岩性 扶余油层 沉积微相 测井相 地震微相分析 

分 类 号：TE121.3[石油与天然气工程—油气勘探]