Multi-source genesis of continental carbonate-rich fine-grained sedimentary rocks and hydrocarbon sweet spots

作     者：JIANG Zaixing KONG Xiangxin YANG Yepeng ZHANG Jianguo ZHANG Yuanfu WANG Li YUAN Xiaodong JIANG Zaixing;KONG Xiangxin;YANG Yepeng;ZHANG Jianguo;ZHANG Yuanfu;WANG Li;YUAN Xiaodong

作者机构：School of Energy ResourcesChina University of Geosciences(Beijing)Beijing 100083China 

出 版 物：《Petroleum Exploration and Development》 (石油勘探与开发（英文版）)

年 卷 期：2021年第48卷第1期

页      面：30-42页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：Supported by National Major Research Program for Science and Technology of China(2017ZX05009-002) the National Natural Science Foundation of China(41772090) Postdoctoral Science Foundation of China(2020M680624) 

主　　题：carbonate-rich fine-grained sedimentary rocks rift lake basins multiple sources hydrocarbon accumulation sweet spot of continental shale oil and gas 

摘      要：This paper systematically discusses the multiple source characteristics and formation mechanisms of carbonate-rich fine-grained sedimentary rocks through the analysis of material source and rock *** hydrocarbon accumulation characteristics of carbonate-rich fine-grained sedimentary rocks are also *** results show that the main reason for the enrichment of fine-grained carbonate materials in rift lake basins was the supply of multiple material sources,including terrestrial material input,formation of intrabasinal authigenic carbonate,volcanic-hydrothermal material feeding and mixed *** development of carbonate bedrock in the provenance area controlled the filling scale of carbonate materials in rift lake *** volcanic-hydrothermal activity might provide an alkaline fluid to the lake basins to strengthen the material supply for the formation of carbonate *** carbonate crystals induced by biological processes were the main source of long-term accumulation of fine-grained carbonate materials in the lake ***-rich fine-grained sedimentary rocks with multiple features were formed through the interaction of physical,biochemical and chemical processes during the deposition and post-deposition *** source and sedimentary origin of the fine-grained carbonate rock controlled the hydrocarbon accumulation in *** the multi-source system,the types ofsweet spotsof continental shale oil and gas include endogenous type,terrigenous type,volcanic-hydrothermal type and mixed source type.