陆相盆地限制性沉积体系  

Confined Sedimentary Systems of Continental Basins

作　　者：朱红涛[1] 徐长贵 李森 杜晓峰 ZHU HongTao;XU ChangGui;LI Sen;DU XiaoFeng(School of Earth Resources,China University of Geosciences(Wuhan),Wuhan 430074,China;CNOOC(China)Ltd.,Beijing 100010,China;Qingdao Institute of Marine Geology,China Geological Survey,Qingdao,Shandong 266237,China;Tianjin Branch,CNOOC(China)Ltd.,Tianjin 300459,China)

机构地区：[1]中国地质大学(武汉)资源学院,武汉430074 [2]中海石油(中国)有限公司,北京100010 [3]中国地质调查局青岛海洋地质研究所,山东青岛266237 [4]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《沉积学报》2023年第6期1903-1916,共14页Acta Sedimentologica Sinica

基　　金：国家自然科学基金项目(42172127,41872149)。

摘　　要：[目的]限制性沉积体系指的是沉积过程中在沉积搬运方向侧缘、前缘或周缘部位由于正向地形的阻挡作用导致沉积体搬运方向、几何形态、沉积结构等发生一系列变化及调整的一类沉积体系。从油气勘探角度来说,不同限制程度沉积体系具有差异性结构样式,控制发育不同的储层类型及分布、渗透率结构和连通性,因此对沉积体系受限制性开展评价也是预测盆地内部储层结构复杂性的关键。[方法]通过梳理近年来限制性沉积研究领域的国内外文献以及团队在渤海湾、珠江口等陆相盆地所做实例工作,系统总结了限制性沉积的研究现状及趋势,扩展了限制性沉积体系在陆相湖盆的研究范例。[结果]当前,限制性沉积研究集中在海相盆地浊流体系,重点从限制发育期次、主控因素、控制部位和控制程度等方面进行定性描述。限制性沉积的发展方向将立足于细化限制“程度”概念、从定性描述向半定量和定量预测转变、从海相浊流体系扩展至陆相多类型沉积体系并加强油气储层预测应用。[结论]围绕限制性沉积体系这一新兴研究领域,梳理了限制性沉积体系概念的提出及演变历程,总结了限制性沉积体系类型及沉积特征,总结了现有研究的不足并对未来发展趋势进行了展望。[Objective]A confined sedimentary system refers to a sedimentary system in which a series of changes and adjustments have occurred in the transportation direction,geometric shape,and sedimentary structure of the sed-imentary body due to the blocking of the positive topography at the side edge,front edge,or periphery of the transpor-tation direction of the sedimentary bodies.From the perspective of oil and gas exploration,sedimentary bodies with different confined degrees have different structural styles,which control the development of different reservoir types and distributions,permeability structures,and connectivity.Therefore,the confined evaluation of sedimentary sys-tems is the key to predicting the complexity of a reservoir structure in a restrictive basin.[Methods]By combining the domestic and foreign literature in confined sedimentation research in recent years with the practical work done by the team in Bohai Bay Basin,Pearl River Mouth Basin,and other basins,this study systematically summarized the re-search status and trend of confined sedimentation and expanded the research examples of confined sedimentation sys-tems in continental lake basins.[Results]At present,the research object of confined sedimentary systems focuses on the turbidite sedimentary system in marine basins,focusing on the qualitative description from the aspects of con-fined development stages,main controlling factors,controlling position,and controlling degree.However,this con-cept cannot cover such continental sedimentary systems as confined river system and confined delta system discov-ered by the author in recent years in the continental lake basin environment.According to the development stages of confined sedimentary system,it can be divided into single stage confinement and multi stage confinement.According to the main controlling factors,it can be divided into early topographic control,syn-sedimentary topographic control,syn-sedimentary fault control and composite control.According to the confined position,the confined sedime

关 键 词：陆相盆地 限制性沉积 海相浊流体系 渤海湾盆地 珠江口盆地 

分 类 号：P512.2[天文地球—地质学]