松辽盆地徐东地区下白垩统火山岩储层流动单元研究

以松辽盆地徐东地区营城组一段为例,在建立火山岩储层等时地层格架基础上,选取孔隙度和渗透率这两项参数,运用SPSS软件进行聚类分析和判别分析,分析了研究区目的层流动单元时空发育特征。结果表明,孔隙度和渗透率是最能反映储层渗流特征的参数。研究区目的层流动单元可以划分为I、II、III和VI类等4种,其中III和VI类最发育,Ⅱ类次之,I类最少。在等时地层格架内紧密组合取心井岩心分析物性资料和非取心井精细测井解释物性资料,运用SPSS软件进行聚类和判别分析,可以实现火山岩储层流动单元表征,为储层有效开发提供依据。

Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China

Exemplified by the volcanic reservoir of 1st Member of Yingcheng Formation in Xudong area of Songliao Basin,the authors studied the characteristics of flow unit spatial-temporal development in the aim strata of the study area.In this process,all work was based on the isochronous framework of stratrigraphy.Two parameters were selected and the software of SPSS was used.In addition,cluster analysis and discriminant analysis were carried out.The results indicate that porosity and permeability are two parameters which can well represent the reservoir characteristics.The flow unit in the study area can be classified into four types,i.e.,Type I,II,III and IV,in which Type III and Type IV are well developed,Type II possesses the second place,and Type I is poorly developed.Closely combining the well data and seismic data in the isochronous framework of stratrigraphy and using the software of SPSS to perform cluster analysis and discriminant analysis prove to be a very efficient way for flow unit study.It can provide substantial foundation for the exploitation of the volcanic reservoir.