自生热泡沫体系调剖机制试验

发布时间：2018-05-15 19:34

本文选题：自生热泡沫 + 阻力因子　；参考：《中国石油大学学报(自然科学版)》2017年02期

【摘要】：自生热泡沫体系是将化学生热方法和氮气泡沫结合得到双液法调剖体系。设计自生热泡沫体系封堵调剖测量装置用于研究自生热泡沫体系在渗流中的封堵调剖机制。研究表明:自生热泡沫体系阻力因子随渗透率增加而增加,封堵能力约为常规泡沫的两倍;自生热泡沫体系产生的泡沫可以圈闭90%以上的气体,在试验范围内,渗透率越大圈闭气体量越大,最高可达99%;自生热泡沫体系能起到较好的调剖作用,在渗透率级差4~16均能达到分流量反转,级差越大达到均衡反转流动所用时间越长,但调剖效果持续时间增加;以温度上升率比分析得到驱替中温度由高渗占优逐渐向低渗占优转变,渗透率级差越小,转变后持续时间越长,与自生热泡沫体系的调剖分流作用结果一致。
[Abstract]:The in-situ heat foam system is a dual liquid profile control system which combines the student heating method and nitrogen foam. The mechanism of plugging and profile control in seepage flow was studied by designing an in-situ heat foam system plugging and profile control measurement device. The results show that the resistance factor increases with the increase of permeability, and the plugging ability is about twice as high as that of the conventional foam, and the foam produced by the in-situ heat foam system can trap more than 90% of the gas in the experimental range. The larger the permeability is, the larger the trap gas volume is, and the highest is 99%. The in-situ heat foam system can play a better role in profile control, and the flow reversal can be achieved in the permeability gradient 416, and the larger the gradient is, the longer it takes to achieve equilibrium reverse flow. However, the duration of profile control effect increased, and the analysis of temperature rising ratio showed that the temperature in displacement gradually changed from high permeability to low permeability, the smaller the permeability difference, the longer the duration after the transformation. The results are consistent with the results of profile control and shunt of in-situ heat foam system.
【作者单位】：中国石油大学石油工程学院;
【基金】：中央高校基本科研业务费专项(15CX06032A) 国家科技重大专项(2011ZX05009-004) 国家自然科学基金项目(51274228,51304229) 教育部博士点基金项目(20120133110008)
【分类号】：TE357.46

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