储层非均质性对二氧化碳驱效果影响研究

摘要

The CO2 flooding technology is one of the mature techniques to improve the recovery. There are many factors to affect CO2 EOR effect. Reservoir heterogeneity is an important factor among them, so it's very necessary to research the influence of the heterogeneity of CO2 oil displacement effect. In this paper, under the interlayer heterogeneity and the presence of channeling condition, the change regularity of CO2 flooding was studied, the influence of two kinds of heterogeneity on CO2 flooding effect was analyzed. The results showed that the two kinds of heterogeneity all had effect on CO2 flooding effect.%CO2驱油技术是目前油田上提高采收率的重要技术之一。影响其 CO2驱油效果因素较多。油藏非均质性是其中一个的重要因素，因此需要开展油藏非均质性对 CO2驱油效果影响的系统研究，幵在此基础上迚一步研究改善非均质油藏 CO2驱效果的方法。研究了层间非均质和存在窜流通道情况下，CO2驱变化规律，分析了两种非均质性对 CO2驱效果影响。结论阐明了两种非均质性对 CO2效果的影响程度。