柴达木盆地第三系扇三角洲露头相分析与应用  

APPLICATION AND ANALYSIS OF OUTCROP OF TERTIARY FAN DELTA IN QAIDAM BASIN

作　　者：赵永杰[1,2] 武刚[3] 许坚[3] 孙晓霞[3] 

机构地区：[1]中国科学院广州地球化学研究所,广东广州510640 [2]中国石化胜利油田分公司科技处,山东东营257000 [3]中国石化胜利油田分公司地质科学研究院,山东东营257015

出　　处：《大庆石油地质与开发》2009年第6期22-25,共4页Petroleum Geology & Oilfield Development in Daqing

基　　金：基金项目：中国石油化工股份有限公司科技攻关项目“砂砾岩、浊积岩有效开发关键技术”（P05026）和国家自然科学基金项目（40503003）资助.

摘　　要：位于青藏高原北部的柴达木盆地是我国西部的一个大型中新生代盆地，与四周的老山均以断裂为界，其西部自第三纪以来，广泛发育扇三角洲相砂砾岩体，与济阳坳陷陡坡带发育的砂砾岩体类型基本相同。因此，通过扇三角洲野外露头的精细描述，确定露头相特征，识别并描述辫状河道间、水下分流河道、河口坝、席状砂以及前扇三角洲等沉积相类型及其特点，对于济阳坳陷陡坡带扇三角洲相砂砾岩体储层沉积模式建立、有利储集区分布的研究，具有重要的指导意义。The Qaidam Basin, a large Mesozoic and Cenozoic basin, is located in the north of Tibet plateau and fault bounded by surrounding mountains. Since Tertiary period, glutenite of fan-delta facies has been widely devel- oped in the west Qaidam Basin, which has similar property with glutenite developed in the abrupt slope belt of Jiy- ang Depression. Therefore, it is important to make fine description of field outcrop of fan delta, ascertain the out- crop features, describe the types and features of sedimentary facies including inter braided channel, subsea distrib~ utary channel, channel bar, sheet sand and front-fan delta, which have great significance for the establishment of depositional model of glutenite of front-fan delta in the abrupt slope belt of Jiyang Depression and for the study on favorable accumulation distribution .

关 键 词：扇三角洲 砂砾岩体 露头相 水下分流河道 比较沉积学 

分 类 号：TE321[石油与天然气工程—油气田开发工程]