摘要
通过综合分析溱潼凹陷西斜坡阜三段的岩石学、粒度分布、沉积构造及测井相特征,认为该区阜三段主要发育三角洲前缘及浅湖-半深湖沉积,三角洲前缘可进一步识别出水下分流河道、水下分流间湾、河口坝、远砂坝、席状砂5种微相类型。在此基础上,以单井相分析结果及小层划分为约束,绘制了台III、IV砂组各小层沉积微相平面展布图,发现阜三段砂体主要源自北部的三角洲朵体,具有分布广、岩性细的特点,蔡家堡-顾庄地区以水下分流河道沉积为主,华庄-叶甸-俞垛-边城地区则以河口坝-远砂坝-席状砂沉积为主,各小层沉积微相平面展布有所差异。
Through comprehensive analysis of 3rd member Funing formation in western slope of Qintong depression,northern Jiangsu basin,such as petrology,particle size distribution,sedimentary structures and logging facies characteristics,3rd member Funing formation is mainly developed with delta front and shallow lacustrine and semi-deep lacustrine sedimentary facies,and the delta front can be further divided into underwater distributary channel,underwater distributary bay,mouth bar,distal bar and sheet sand,these five micro- facies types.On the basis of this,constrained by analysis results of single well facies and sub-layers division,the plane distribution map of micro-facies of Tai-III and TaiIV sand groups have been drawn.The maps show the sand body of 3rd member Funing formation is mainly from northern delta lobes,with wide distribution and fine lithologic characteristics,Caijiapu-Guzhuang are is centered on underwater distributary channel sediments,while Huazhuang- Yedian- Yuduo-Biancheng area is centered on mouth bar- distal bar- sheeted sand sediments.Therefore,the sedimentary micro-facies of various layers are of some differences.
出处
《石油地质与工程》
CAS
2014年第6期22-24,143,共3页
Petroleum Geology and Engineering
基金
中国石化集团华东分公司科技项目(HDF/KJ2012-21)资助
关键词
苏北盆地
溱潼凹陷
西斜坡阜三段
沉积相
Qintong depression
western slope
third sections of Funing formation
sedimentary facies