空气泡沫在非均质油藏中渗流能力的实验研究

利用实验分析了空气泡沫在不同渗透率、不同气液比的单管均质岩心模型中的渗流能力及其影响 因素，并研究了不同渗透率级差双管并联模型中产出液分流量的变化。 实验结果表明：气液比越大，泡沫 渗流阻力越大；随着岩心渗透率和泡沫注入量的增加，岩心中泡沫阻力系数增大，封堵能力增强；泡沫在 非均质地层中具有很好的液流转向能力，但随着渗透率级差的增大，液流转向能力变弱。

Experimental study on flow properties of air foam in heterogeneous reservoir

This paper analyzed the percolation capacity and influencing factors of air foam in single homogeneous cores with different permeabilities and different gas-liquid ratios, and studied the fractional flow rates of parallel cores with different permeability ratios. The experimental results indicate that the larger the gas-liquid ratio is, the larger the flow resistance of foam system is; with the increase of permeability and volume of foam system injected, the resistance factor gets larger, and the blocking ability of foam system increases; the fluid diversion capacity is good while foam flow in hetero- geneous reservoir, but with the increase of permeability ratio, the ability of foam system to divert liquid tends to decrease.