高分辨率层序地层学在濮城油田西区沙二上亚段2+3砂组末端扇沉积体系中的应用(英文)APPLICATION OF HIGH-RESOLUTION SEQUENCE STRATIGRAPHY TO A TERMINAL FAN SYSTEM,LAYERS 2 AND 3 OF THE UPPER SECOND MEMBER OF SHAHEJIE FORMATION,PUCHENG OILFIELD
张晓华,张金亮
摘要(Abstract)：
为提高研究区储层描述和剩余油预测的精度,综合运用高分辨率层序地层学理论方法与技术,以岩芯、测井资料为基础,对濮城油田西区沙二上亚段2+3砂组进行了高分辨率精细层序划分,运用基准面旋回原理,将沙二上亚段2+3砂组划分为一个中期旋回,作为等时地层格架,并且进一步进行了短期旋回的识别,作为等时地层对比单元。最终将沙二上亚段2砂组分为7个小层,3砂组分为9个小层,并在全区建立了高分辨率层序地层格架。通过单井岩芯观察和描述,对研究区内各砂组砂体和沉积微相进行了详细研究,最终建立了濮城油田西区沙二上亚段2+3砂组的沉积模式,认为该地区为具有恒定物源供给的细粒末端扇沉积体系,而非前人所认为的辫状三角洲沉积。研究区亚相类型主要为末端扇中部亚相,中部亚相又分为分流河道、泥滩、近水道漫溢和远水道漫溢4个微相。
关键词(KeyWords)： 高分辨率层序地层学;基准面旋回;沉积模式;末端扇;沙河街组;古近系;濮城油田;河南
基金项目(Foundation): 中原油田“濮城油田西区沙二上2+3砂组剩余油描述与预测”项目成果
作者(Author): 张晓华,张金亮
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