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本文以姬塬南斜坡区块延安组为例,在姬塬南斜坡区块沉积相和顶面构造图的基础上,利用电测解释,选取砂体厚度、有效厚度、渗透率、孔隙度、含油饱和度五个参数进行聚类分析,对储层进行分析,将延安组油藏划分为Ⅰ、Ⅱ、Ⅲ三类储层。结果表明,研究区延9、延10为该区的主力油层。同时通过对该区块部分油井产能进行计算,得出部分油井的产能,并对其进行等级划分。结果表明,各类储层的单井产能与储层物性、沉积相和储层岩性具有很好的对应关系。更有力的证明油井产能受到储层物性、岩性和沉积相的影响。
Based on the sedimentary facies and top tectonic map of southern slope of Jiyuan Plateau, this paper takes Yan’an Formation in the South Slope of Jiyuan as an example. Based on electrical interpretation, the thickness, effective thickness, permeability, porosity, Oil saturation, five parameters of cluster analysis, the reservoir analysis, the Yan’an Formation reservoir is divided into Ⅰ, Ⅱ, Ⅲ three types of reservoirs. The results show that the study area Yan 9, Yan 10 is the main reservoir in the area. At the same time, by calculating the production capacity of some oil wells in the block, the productivity of some oil wells is obtained and their grades are classified. The results show that single well productivity of various reservoirs has a good correspondence with reservoir physical properties, sedimentary facies and reservoir lithology. More powerful evidence that well productivity is affected by reservoir properties, lithology, and sedimentary facies.