碎屑岩储层流动单元研究进展

储层流动单元研究最主要的目的是揭示储层的非均质性,流动单元研究的深入开展是深化和发展油藏表征的关键。目前来看,在流动单元的概念、划分方法及控制因素等方面尚未完全达成共识,且在流动单元三维建模及油藏数值模拟研究还比较薄弱。因此,在参考国内外大量文献的基础上,详细阐述了流动单元的概念提出及发展历程;概述了流动单元研究的目的和意义;总结了流动单元的主要研究方法,包括以地质研究为主及以数学研究为主2大类,并进一步指出了各类方法划分流动单元过程中存在的局限性及亟待解决的问题;主要从沉积、成岩及构造等方面分析了碎屑岩储层流动单元的控制因素;最后从储层构型、建模、油藏数值模拟及剩余油分布4个角度展望了流动单元研究的发展方向;全文对流动单元研究成果的总结和介绍将推动我国陆相碎屑岩储层流动单元研究的深入发展。

Research progress in flow unit of clastic reservoir

The main aim of reservoir flow unit research is to identify the reservoir heterogeneities. Comprehensive research on flow units is the key to more advanced reservoir characterization. So far, there is still no common understanding on acute concept, classification and control factors of flow unit, furthermore, the 3-D modeling and reservoir simulation of flow units still need more work. Based on a large amount of literatures, this paper presents the history and development of flow unit concepts in details, outlines the purpose and significance of flow unit researches, summarizes the main research approaches including geological and mathematical approaches and points out the puzzles and limitations existing in the classification of flow units in elastic reservoir. The factors controlling flow units are chiefly analyzed from sedimentary, diagenetie and struetural factors. Finally, four aspects including reservoir architecture, modeling, numerical simulation and remaining oil distribution are forecasted. This summary and introduction research on the preexisting efforts about flow unit surely will promote the development of the flow unit research in clastic reservoir in China.