储层分类评价是油藏研究的重要内容,为了使储层分类更为准确、合理 ,采用Q型主因子分析与判别函数法进行储层综合评价.以子长油田储层为研究对象,优选取心井的砂岩厚度、砂岩百分含量、孔隙度、渗透率等储层参数 ,应用数理统计方法将这些参数集合起来 ,采用Q型聚类分析法对储层进行分类,采用贝叶斯判别法建立进行储层分类的判别函数,并以此判别函数对非取心井的目的层进行定量分类评价.评价结果表明 ,储层可以分为四类 ,Ⅰ类和Ⅱ类储层分布较少 ,主要以Ⅲ类、Ⅳ类储层发育为主.其中 ,Ⅲ类储层发育的2号小层的储量丰度要高于Ⅳ类储层发育的1号小层.%Reservoir classification evaluation is important in reservoir research .Q -model principal factor analysis method and discrimination function method were used in integrated reservoir evaluation in order to make reservoir classification more accurate and reasonable .Based on the collected reservoir parameters from coring wells of Zichang Oilfield including sandstone thickness ,its percent content ,its porosity and permeability ,Q-model cluster analysis method was used to classify the reservoir stratum .Bayesian Discrimination method was used to establish the discrim-ination function for reservoir classification by which quantitative classification evaluation was made on the target layer of non-cored wells ,followed by the conclusion that there are four types of reservoirs among which the 3rd type and 4th type are better developed .
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