针对目前火山岩储层非均质性研究薄弱的现状,以松辽盆地徐东地区白垩系营城组一段火山岩储层为例,通过对56块岩心分析、275块物性分析和32口井精细测井解释资料进行统计分析和数学运算,定量研究火山岩储层层内非均质性特征及层内非均质性的成因和影响因素,探讨了层内非均质性对储层开发的影响.提出了将岩心分析和测井解释成果统计计算相结合研究火山岩储层层内非均质性的方法.结果表明:研究区目的层层内非均质性总体强烈,4个小层YC1I1,YC1I2,YC1II1和YC1II2中,小层YC1I1的非均质性最弱,为主力层,其在垂向上渗透率基本达到横向上的1/2到1倍多.总体上,储层渗透率在横向上的变化要远大于垂向上.储层层内非均质性的影响因素包括构造作用、火山喷发特征、火山岩性、火山岩相及成岩作用等多种,以构造作用和成岩作用为主.以渗透率变异系数为指标,油层发育区以该项系数小于0.5最多,0.5至0.7之间次之.储层层内非均质性强烈的区域主要分布于研究区西北部和东南部,在开发方案的设计过程中应该充分考虑. Aiming at the current weakness of volcanic reservoir heterogeneity research, taking volcanic reservoirs of the first member of Cretaceous Yingcheng Formation in Xu Dong area of ​​Songliao Basin as an example, 56 rock cores, 275 physical properties and 32 wells We interpret the data and conduct statistical analysis and mathematical operation to quantitatively study the formation heterogeneity and heterogeneity of volcanic reservoirs and their influencing factors, and discuss the influence of intra-layer heterogeneity on reservoir development. The method of combining the core analysis with the statistical calculation of logging interpretation results is presented to study the heterogeneity of volcanic reservoirs. The results show that the heterogeneity of the target layers in the study area is generally strong, and four small layers of YC1I1, YC1I2 , YC1II1 and YC1II2, YC1I1 has the weakest heterogeneity, which is the main layer, and its vertical permeability basically reaches 1/2 to 1 times in the horizontal direction.In general, the permeability of the reservoir in the horizontal direction Is much larger than that in the vertical direction.Impact factors of reservoir heterogeneity include tectonism, volcanic eruptions, volcanic lithology, volcanic facies and diagenesis, which are dominated by tectonism and diagenesis. Rate of variation coefficient as an indicator of oil The area with the coefficient of less than 0.5 should be the largest, followed by 0.5 to 0.7. The areas with strong heterogeneity in the reservoir are mainly distributed in the northwest and southeast of the study area and should be well designed in the development plan consider.