不同沉积体系储集层构型研究与展望

Reservoir Configuration Research and Prospect of Different Deposit Systems

储集层构型自提出以来,研究范围从河流沉积体系逐步延伸到各种沉积体系。目前为止,针对曲流河沉积体系,形成了废弃河道定位、构型界面定期、相互关系定型的定量研究思路;针对辫状河沉积体系,逐步完善辫状河河道和心滩组合关系以及心滩内部构型模式;针对冲积扇沉积体系,寻求地下储集层的构型分级和识别模式;针对三角洲前缘沉积体系,精细水下分流河道内部加积体,河口坝内部增生体等构型要素划分。最后总结了不同沉积体系储集层构型研究中存在的问题和展望,认为建立其更加符合地下地质认识的构型模式,认识储集层构型动态响应特征以及与井网匹配关系将是储集层构型研究的趋势。

Since the concept of reservoir architecture is proposed, the studies have gradually ranged from fiver deposit system to other various systems. In view of meandering river system, the quantitative studies are achieved for abandoned channel location, configuration inter face lateral accretion body＇s number and correlation shapesizing of point bar. For braided river system, the combination relationship be tween channel and midchannel bar as well as the model of inner architecture of midchannel bar are gradually developed. For alluvial fan system, its reservoir architectural grading and identifying model have become the main targets. And for delta front system, the detailed con figuration element classification of underwater distributary channel inner accretion body and the mouth l^ar inner accretion body is focused on. Finally, this paper presents the existing problems and prospects in reservoir configuration studies for different deposit systems. It is con eluded that developing configuration models that are more suitable for available geological recognitions, determining the dynamic response features of the reservoir configurations and their relations with the well patterns will be the trend to such researches.