裂缝性油藏多尺度有限元数值模拟方法研究

NUMERICAL SIMULATION OF MULTI–SCALE FINITE ELEMENT OF FRACTUREDRESERVOIR

针对裂缝性油藏内在的复杂性,考虑到双重介质等模型的限制,同时为了更好地表征裂缝和提高计算精度,提出了裂缝性油藏等效介质模型数值模拟方法,建立了数学模型,通过无需在小尺度上精确求解即可抓住大尺度解特征的多尺度有限元数值分析方法,建立有限元数值模型,形成了基于等效介质模型的裂缝性油藏多尺度有限元数值模拟方法,最后将该方法通过实例进行检验,验证了方法的正确性。

Aimed at the inherent complexity of fractured reservoir,and given the restriction of some models,suchas double-porosity model,this paper presents the fractured reservoir numerical simulation on equivalent mediummodel based on finite element,so that fractures could be better characterized. There are many problems in fracturedreservoir numerical simulations by finite element method:the memory restriction,long computing time etc. To solvethese problems,this paper presents fractured reservoir numerical simulations based on multi-scale finite element.First,the mathematic models of fractured reservoir numerical simulations have been established,then the multiscalefinite element numerical analysis is discussed. Finally,the results from the experimental design example showthat method prove to be correct.