薄互层砂岩储层非均质性对油气分布的影响——以陆9井区K_1h_2~6油藏为例  

Heterogeneity of sandstone reservoir with alternating thin layers and oiliness distribution:A case study of K_1h_2~6 reservoir in LU9 well area

作　　者：王石[1,2] 高先志[2] 路建国[3] 

机构地区：[1]中国石油化工股份有限公司石油勘探开发研究院,北京100083 [2]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [3]中国石油新疆油田分公司陆梁油田作业区,新疆克拉玛依834000

出　　处：《东北石油大学学报》2016年第4期26-34,95,共10页Journal of Northeast Petroleum University

摘　　要：在三角洲前缘沉积背景下,砂体呈薄互层特征,形成较强的储层非均质性,并对原始油气的充注产生重要控制作用。以陆梁油田陆9井区K1h26三角洲前缘油藏的宏观非均质及油气分布的关系为例,分析油藏岩心观察、测试和测井等资料,分别精细刻画沉积微相、隔夹层、砂体形态和韵律性等4个方面的非均质特征;利用储层非均质性综合指数,总体表征储层属性在空间上的差异性分布特征,建立综合指数和油气分布的关系。结果表明:油藏顶部稳定隔层和砂层良好的空间配置关系使油气发生优势充注和聚集;沉积微相成因的局部储层质量差异控制油气在砂层内的分布,在整体砂体发育好、物性特征好和夹层频数少的东部井区,非均质性综合指数较高,含油性普遍好。The sandbody formed in delta front is characterized by alternating thin layers,its high-level heterogeneity has a strong effect on the initial oil &gas injection.This paper deals mainly with the relationship between the macro heterogeneity and oil &gas distribution of K6 1h2 reservoir in LU9 well area,with the purpose of exploration and potential tapping of strong heterogeneity.Though the core observation and analysis of test data and well logging,four parts of heterogeneity are meticulous depicted,which are sedimentary micro-facies,interbeds,sand body morphology and rhythmicity,also the comprehensive reservoir heterogeneity index is calculated.In order to describe the difference of distribution of reservoir quality,we also include the relationship of index and oil &gas distribution.It can be conclued that the stable interbeds and spatial configuration of interbeds and sandbody makes the preferential injection.Locally,reservoir quality variation controlled by micro-facies dominates oil & gas distribution within sandbody.The estern well area,with good sandbody,good physical properties,less frequency interbeds and high comprehensive index,tends to be hydrocarbon enrichment.

关 键 词：沉积微相 非均质性 隔层 非均质性综合指数 含油性 K1h26油藏 陆9井区 

分 类 号：TE122.2[石油与天然气工程—油气勘探]