沉积学报2024，Vol.42Issue(4)：1164-1184,21.DOI:10.14027/j.issn.1000-0550.2022.136
湖盆细粒沉积岩纹层形成机制及影响因素研究进展
Research Progress on the Formation Mechanism and Influencing Factors of Fine-grained Sedimentary Rock Laminae in Lake Basins
摘要
Abstract
[Significance]Fine-grained sedimentary rock laminae represent the fundamental and distinctive unit structures in the inner layer of semi-deep and deep-lake basins,typically with a thickness of less than 10 mm.Its material composition,continuity,and geometry play an important role in the restoration of paleo-environmental changes and sedimentary mechanism.With the development of unconventional oil and gas production,mang scholars have identified diverse types of laminae in lake basins,complex sedimentary mechanisms,and numerous controlling factors that significantly impact shale oil and gas enrichment,development,and production.Therefore,further research into the fine-grained sedimentary rock laminae structure can offer valuable insights for unconventional oil and gas exploration.[Progress]Through the process of discovery,identification,and research on laminae,genetic mechanisms for clay mineral laminae,felsic laminae,calcareous laminae,and organic-rich laminae were determined respectively.Additionally,the coupling relationship between different environmental conditions and priority develop-ment types of laminae was summarized while expounding on the control effect of single factors on laminae.It is proposed that fine flocculation reaction serves as an explanatory theory for hydrodynamic-induced laminar formation which challenges conventional understanding that laminae are solely caused by continuous suspension settlement in still water.[Conclusions and Prospects]Influencing factors of laminae deposition were classified into four catego-ries:paleoclimatic factors,palaeogeographic conditions,palaeogeological events,and other factors.During lamina deposition,different influencing factors may promote or inhibit each other,and their combination controls the material composition,continuity,and geometric featuresofthe laminae.The accurate inversion of laminae formation by using the perfect model will be the main research direction in the future,providing guidance for the further study of laminae structure in fine-grained sedimentary rocks and the research and application of unconventional oil and gas reservoirs.关键词
纹层/细粒沉积岩/非常规储层/絮凝作用Key words
laminae/fine-grained deposition rock/unconventional reservoir/flocculation分类
天文与地球科学引用本文复制引用
吴科睿,闫百泉,孙雨,于利民,王鑫锐..湖盆细粒沉积岩纹层形成机制及影响因素研究进展[J].沉积学报,2024,42(4):1164-1184,21.基金项目
海南省科技计划三亚崖州湾科技城自然科学基金联合项目(2021JJLH0077) （2021JJLH0077）
黑龙江省博士后科研启动金资助项目(LBH-Q21081) （LBH-Q21081）
国家自然科学基金项目(41872158)[Hainan Provincial Joint Project of Sanya Yazhou Bay Science and Technology City,No.2021JJLH0077 （41872158）
Postdoctoral Scientific Research Developmental Fund of Heilongjiang Province,No.LBH-Q21081 （）
National Natural Science Foundation of China,No.41872158] （）
