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本文采用有限差分、状态方程（EOS）、组分模拟程序研究CO2驱。首先，用精细网眼模拟研究了非稳定一次接触混相（FCM）驱中CO2流型从重办上窜向粘性指进的过渡变化。其次。通过在相同条件下将一次接触一混相（FCM）驱与多次接触混相（MCM）驱进行直接对比。研究了相态特性对粘性指进产生的影响。最后，针对几种具有随机渗透率分布范围的矿场规模CO2验情况。综合考虑并模拟研究了重力、物理弥散、毛管压力、相态特性及非均质性的影响。
In this paper, finite difference, state equation (EOS), component simulation program to study CO2 flooding. First, the transitional changes of CO2 flow pattern from re-flowing to viscous fingering in unstable single-contact mixed-phase (FCM) flooding were studied using a fine mesh simulation. Second. A direct comparison was made between the single-contact FCM drive and the multiple-contact MCM drive under the same conditions. The effect of phase behavior on the sticking property was studied. Finally, we will investigate the CO2 scale of the mine with random permeability distribution. The influence of gravity, physical dispersion, capillary pressure, phase behavior and heterogeneity are comprehensively considered and simulated.