摘要
储层的微相砂体类型、几何规模特征及分布规律是分析地下油水运动规律和调整注采井网的基础。充分利用密闭取心、密井网等资料 ,精细剖析了双河油田扇三角洲前缘储层沉积微相及其分布。在扇三角洲前缘主要发育水下分流河道、河口坝、前缘席状砂体、重力流砂体、水下溢岸砂体 5种微相砂体。微相砂体形状、规模及空间分布决定了注采井网对油层的控制程度和完善程度 ,微相类型及其分布控制着油水井的产液及吸水能力 ,控制着注入水的地下运动方式 ,因此利用沉积微相的研究成果 ,找准剩余油富集区 ,调整和部署注采井网 。
The type,the geometrical scales and the distributions of microfacies sandbodies are the basis of studies on fluid movement and on flood pattern modification. The microfacies and their distributions of fan delta front in Shuanghe oil field are analyzed in detail by using sealed coring data, highly dense well patterns and so on. Five microfacies sandbodies including distributary channel, mouth bar, front sheet sand, gravity flow sand and overbank sand are developed in the fan delta front.Their shapes, scales and distributions in space are apparent to determine the extent to which the current flood well pattern acts on the oil layers. The types and distributions of microfacies have controls on the production and the injection capabilities of wells and on the way of injected fluid movement. So, it will bring about a better production using the results of this study for looking for the remaining oil and modifying the flood well patterns.
出处
《现代地质》
CAS
CSCD
2001年第1期88-93,共6页
Geoscience
关键词
扇三角洲
非均质性
剩余油
注采井网
沉积微相
fan delta front
microfacies analysis
heterogeneity
remaining oil
flooding well pattern
