天然气与石油2025，Vol.43Issue(1)：93-102,10.DOI:10.3969/j.issn.1006-5539.2025.01.013
鄂尔多斯盆地西部页岩油储层成岩相测井识别与预测
Logging-based identification and prediction of diagenetic facies in shale oil reservoirs in the Western Ordos Basin
摘要
Abstract
Different diagenetic combinations control the development of reservoir pores and the different characteristics of reservoirs.In order to predict the diagenetic facies of unknown diagenetic facies well sections in the Jiyuan area,this paper applies experimental techniques such as core analysis,casting thin sections,cathodoluminescence,and scanning electron microscopy to classify the Chang 7 shale oil reservoir in the Jiyuan area of the Ordos Basin into six types of diagenetic facies based on the types of diagenesis and mineral assemblages.Using SPSS software and Fisher's dimensionality reduction approach,the main and secondary factors for identifying diagenetic facies were established,and corresponding graphs were created.At the same time,discriminant functions for different diagenetic facies were developed to predict the diagenetic facies of unknown well sections.Compared with the conventional intersection plot method,the Fisher discriminant method improves the accuracy of diagenetic facies identification through well logging,achieving a correct identification rate of 91.4%,which improves the identification accuracy considerably and provides a foundation for further oil and gas exploration and development in the Chang 7 shale oil reservoir of the study area.关键词
鄂尔多斯盆地西部/姬塬地区/长7页岩油/成岩相测井识别Key words
Western Ordos Basin/Jiyuan area/Chang 7 shale oil/Diagenetic facies identification through well logging引用本文复制引用
董越,路巍,陈华,王振宇,姬程伟,李妍蓉,朱玉双..鄂尔多斯盆地西部页岩油储层成岩相测井识别与预测[J].天然气与石油,2025,43(1):93-102,10.基金项目
国家科技重大专项"碎屑岩输导层结构模型中成岩演化过程与流体流动特征"(2017ZX05008-004-004-001) （2017ZX05008-004-004-001）
国家自然科学基金"高热与超压背景的成岩响应及流体活动对储层成岩—孔隙演化的影响"(41972129) （41972129）
