樊家川油田河流相储层高分辨率层序地层特征  

High-resolution sequence stratigraphy features of the river facies reservoir in the Fanjiachuan oil field

作　　者：于波[1] 付国民[1] 李永军[1] 刘社华[1] 

机构地区：[1]长安大学地球科学与国土资源学院,陕西西安710054

出　　处：《地球科学与环境学报》2005年第1期53-58,共6页Journal of Earth Sciences and Environment

基　　金：中国石油天然气总公司 2002 年科技攻关项目:碎屑岩储层剩余油精细描述

摘　　要：针对河流相储层标志层缺乏、砂体叠置掘蚀严重、难以精细等时对比的难点,应用基准面旋回原理,重点解剖典型取心井及其测井响应模式,将樊家川油田主要含油层系中侏罗世延安组Y8～Y10油组划分为7个短期、3个中期、2个长期基准面旋回层序,对应于不同级次的储层成因单元,同时建立以中期旋回为年代地层格架,短期旋回为等时地层对比单元的层序地层格架,对河流相多期叠覆储层进行了精细等时划分与对比,详细分析了河流相储层短期基准面旋回类型及其叠加式样,探讨了各级基准面旋回对储层分布的控制作用.The rive facies reservoir is short of symbol layer and sandbody is folded and picked ,so fine isochronous sandbody comparing and dividing are difficult. On the basis of the theory of the base-level cycle, 7 short-term cycle sequence,3 middle-term cycle sequence,2 long base-level cycle sequence can be distinguished from the Y8~Y10 oil formation of the principal oil-bearing ones in the Yanan Formation of Middle Jurassic age. The base-level cycle sequence is corresponding to different grade genetic units. At the same time, all graded sequence structure types,stacking patterns and chrono-stratigraphic framework are established on the basis of the middle-term cycle sequence, and short-term cycle sequence,and the reservoir distribution by the different base-level cycle is discussed.

关 键 词：基准面旋回 储层 河流相 高分辨率层序地层 层序地层格架 取心 地层对比 油田 等时 油层 

分 类 号：P618.130.2[天文地球—矿床学] TE122.2[天文地球—地质学]