摘要
目前对于曲流河点坝构型的研究成果主要集中在"结果"的分析和描述,而对于点坝内部侧积体"成因"的研究成果则相对较少。鉴于此,通过充分利用岩心、测井、密井网等资料,在废弃河道和点坝砂体的识别以及多种构型参数估算的基础上,结合前人研究成果,采用"相邻相似"原则对单一河道相邻点坝侧积体进行组合,然后按先后发育顺序揭示曲流河道横向迁移、摆动与演化规律,再现曲流河道沉积演化过程。这种方法重建了曲流河道水动力学演化过程,解析了曲流河点坝砂体的层次建筑结构。该研究成果不仅使曲流河点坝内部砂体建筑结构解剖结果更合理、更可信,而且还丰富了地下河流相储层构型理论。
The current research findings of meandering river point-bar configuration mainly focues on the anlysis and description of'results',but less on the'genesis'of point-bar lateral accretion bodies.Accordingly,based on full use of coring,logging,dense well pattern and other data,the identification of abandoned channels and point-bar sand bodies as well as the estimation on multiple configuration parameters and in combination with previous research results,the point-bar lateral accretion bodies adjacent to single channel were taken as an assemblage in line with the Proximity-Similarity Principle.Then,the lateral migration,swing and evolution laws of meandering river channels were revealed in sequence of successive development,so as to recover the sedimentary evolution process of meandering river channels.This method was applied to rebuild the hydrodynamic evolution process of meandering river channles and analyze the hierarchical structures of meandering river point-bar sand bodies.This result not only makes the analytic results of meandering river pointbar structures more reasonable and credible,but also further enriches the configuration theory of underground fluvial reservoir.
出处
《石油学报》
EI
CAS
CSCD
北大核心
2015年第7期809-819,共11页
Acta Petrolei Sinica
基金
国家自然科学基金项目(No.41372125)
湖北省自然科学基金项目(2011CDB002)
湖北省教育厅基金项目(Q20121210)
中国地质大学(武汉)重点实验室开放基金项目(TPR-2012-23)资助
关键词
曲流河
演化过程恢复
侧积体
沉积建造
构型
meandering river
recovery of evolution process
lateral accretion bodies
sedimentary formation
configuration
