摘要
辫状河三角洲是我国油气藏比较常见的沉积体系,沉积环境复杂多变,在同一沉积亚相中仍然存在具有明显沉积韵律、岩石相组合的小的沉积单元.通过岩心剖面对比,将辫状(水下)分流河道细分为充填河道、废弃河道和进积河道三个小的沉积单元,并结合开发动态特征分析了不同沉积单元对开发过程的影响,具有明显的规律性.精细研究油藏沉积特征对提高油田采收率具有现实意义.
Braid river delta is a very common deposition system in Chinese reservoir, depositional environment complex and multivari- ate and there is sharp sedimentary rhythm, sedimentary rock combined unit in the same sub -faces. By means of core profile correlation, the braided distributor channel is divided into three units ： packed channel, abandoned channel and prograde channel and then the effect of different units on development process is analyzed according to dynamic feature. The result is it has an apparent regularity. The scrutiny study on reservoir deposit character has real significance for the enhancement of the oilfield＇s recovery efficicncy.
出处
《四川文理学院学报》
2011年第2期79-82,共4页
Sichuan University of Arts and Science Journal
关键词
分流河道
岩石相组合
沉积韵律
岩性
层理
Distributor channel
sedimentary rock combination
sedimentary rhythm
lithology
bedding parting
