大庆石油地质与开发2025，Vol.44Issue(2)：136-146,11.DOI:10.19597/J.ISSN.1000-3754.202310052
基于多复合测井参数的复杂岩性核主元识别方法
Kernel principal component identification method for complex lithology based on multi-composite logging parameters:A case study of reservoirs in Jiufotang Formation of Luxi Sag in Kailu Basin
摘要
Abstract
Nonlinear response relationship between complex lithology and logging curves of Jiufotang Formation res-ervoir in Luxi Sag of Kailu Basin causes ambiguity and uncertainty of conventional lithology identification methods.Therefore,4 composite logging parameters related to reservoir lithology are introduced to enhance the capability of logging curves to describe nonlinear response characteristics of complex lithology.Combining with excellent charac-teristics of Gaussian kernel function and polynomial kernel function,a composite kernel function is constructed to improve global identification capability of kernel principal component analysis method.K-fold cross validation meth-od is used to determine rational kernel radius parameters,thereby establishing a set of complex lithology kernel principal component identification methods based on characterization of multi-composite logging parameters.Analy-sis results of actual lithology data test show that,after introduction of multi-composite parameters,complex litholo-gy data have significant linear separability in kernel principal component space,with lithology relative position con-centrated,fixed and zones division criteria clear,indicating high stability of this lithology classification method.Posteriori identification coincidence rate is＞92.7%,proving the effectiveness of this method in complex lithology identification.The research provides new technical idea for accurate identification of lithologies in complex lithologi-cal zone of Kailu Basin.关键词
核主元分析/岩性识别/复合测井参数/组合核函数/K-折交叉验证法Key words
analysis of kernel principal component/lithology identification/composite logging parameter/mixed kernel function/K-fold cross validation method分类
天文与地球科学引用本文复制引用
裴家学,郭晗,周立国,张甲明,田涯,李皓,李雪英,隋强..基于多复合测井参数的复杂岩性核主元识别方法[J].大庆石油地质与开发,2025,44(2):136-146,11.基金项目
黑龙江省自然科学基金联合引导项目"基于马尔科夫链的厚度随机分布薄互层时频响应机理研究"(LH2021D010). （LH2021D010）
