Microscopic and Fractal Characterization of Organic Matter within Lacustrine Shale Reservoirs in the First Member of Cretaceous Qingshankou Formation,Songliao Basin,Northeast China

作     者：Bo Liu Meng Yan Xianda Sun Yunfeng Bai Longhui Bai Xiaofei Fu Bo Liu;Meng Yan;Xianda Sun;Yunfeng Bai;Longhui Bai;Xiaofei Fu

作者机构：Key Laboratory of Continental Shale Hydrocarbon Accumulation and Efficient DevelopmentMinistry of EducationNortheast Petroleum UniversityDaqing 163711China State Key Laboratory of Oil and Gas Reservoir Geology and ExploitationChengdu University of TechnologyChengdu 610051China PetroChina Daqing Oilfield CompanyDaqing 163318China 

出 版 物：《Journal of Earth Science》 (地球科学学刊（英文版）)

年 卷 期：2020年第31卷第6期

页      面：1241-1250页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 0704[理学-天文学] 

基　　金：the Open Fund of the State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,China(No.PLC20180402) the National Natural Science Foundation of China(No.41972156) the National Basic Research Program of China(No.2016ZX05003-002) 

主　　题：confocal laser scanning fractal bitumen lithofacies shale oil 

摘      要：Understanding the occurrences of different fractions of organic matter in shale reservoirs is very important for the evaluation of shale *** organic-rich shale samples from the first member of the Cretaceous Qingshankou Formation in the Songliao Basin were analyzed with confocal laser scanning microscopy(CLSM)and fluorescence spectral *** results show that the occurrences of different organic components are related to the fabric of samples and vary with *** bulk content of light components is significantly higher than heavy components and exhibits a positive relationship with quartz and feldspar *** light and heavy components are distributed parallel with the lamination in microscopic view in laminated samples,and randomly in massive *** maximum radius of light components in most of the samples is larger than 20μm,while it is smaller for heavy components,indicating the micro fractionation from clay/organic lamina to quartz/feldspar *** depth of enrichment of light components corresponds to the oil maturity of organic *** the distribution of light and heavy components fits the same fractal model,with fractal dimensions ranging between 2.2 and *** CLSM results confirm that it can be a reliable tool for thesweet spotexploration.