基于主成分分析的砂砾岩储层孔隙度计算方法研究  

Method of Porosity Calculation of Glutenite Rocks Based on Principal Component Analysis

作　　者：胡松[1] 张超谟[1] 胡瑶[1] 文得进[1] 

机构地区：[1]油气资源与勘探技术教育部重点实验室(长江大学)长江大学地球物理与石油资源学院,湖北荆州434023

出　　处：《石油天然气学报》2010年第3期100-104,共5页Journal of Oil and Gas Technology

基　　金：国家"863"计划项目(2006AA06Z220)

摘　　要：新疆某油田X井区砂砾岩储层具有岩石结构复杂、储层非均质性强、低孔隙性和低渗透性特点。利用主成分分析法,提取反映孔隙度变化的测井响应成分建立的孔隙度模型,既考虑了多种解释参数同时又抑制了无关信息的干扰;用该方法所计算的孔隙度与岩心分析孔隙度符合程度更好,比单纯利用一个参数所建立的孔隙度模型以及多元回归所建立的模型精度要高,在该井区得到了比较理想的应用效果,为含油饱和度的评价奠定了基础。The glutenite reservoirs in Wellblock X of an oilfield in Xinjiang had the characteristics of complex rock structure,strong reservoir heterogeneity,low porosity and low permeability,a method of principal component analysis was used to establish a porosity model by extracting logging response data reflecting porosity changes,by which various interpreting parameters were taken into account and also the interference from unrelated data was controlled.The calculated porosity is well consistent with that of core analysis,its precision is higher than those of the models established with unique parameter and multi-element regression,better effect is obtained in the wellblock and it provides a basis for evaluation of oil saturation.

关 键 词：砂砾岩储层 孔隙度模型 回归分析 主成分分析 

分 类 号：P631.84[天文地球—地质矿产勘探]