HY-3型表面活性剂发泡性能室内评价

Laboratory evaluation on foaming performance of HY-3 surfactant

泡沫作为新型的驱油体系已经得到快速发展,选择适当的发泡剂,可以产生最佳质量的泡沫,达到最佳驱油效果。采用气流法对多种表活剂进行发泡性能实验,并利用泡沫综合指数方法进行性能评价。筛选出HY-3型表面活性剂作为发泡剂,最后应用该发泡剂对泡沫性能影响因素进行研究。研究结果表明,起泡剂浓度对泡沫高度影响不大,半衰期则随着起泡剂浓度的增大而增大。综合考虑起泡能力、半衰期、泡沫综合指数等因素,确定起泡剂浓度为0.3%。矿化度越高,泡沫综合指数越差,但影响程度不大。聚合物的加入具有很好的稳泡作用,聚合物浓度增加,泡沫综合指数增大,聚合物浓度为1 000 mg/L时,泡沫具有较高的发泡能力和稳定性,可以形成超强泡沫。

Foam is used as a new displacement system and develops rapidly. Choosing proper foaming agent can produce foam with best quality and get optimum displacement effect . The method of gas flow is adopted to proceed with foaming performances experiments for many kinds of surfactants and the method of foam aggregative index is used to pro- ceed with performances evaluation. Surfactant HY-3 is chosen as proper foaming agent, finally the foaming agent is ap- plied to investigate affecting factors of foam performances. It is demonstrated that concentration of foaming agent has a small effect on the height of foam, however, half life increases as concentration of foaming agent increases. Taking fac- tors including foaming ability, half life and foam aggregative index into account synthetically, concentration of foaming agent is determined as 0. 3%. The higher salinity is, the worse foam aggregative index is, but its effect is small. Adding polymer makes foam stable, polymer concentration increases with increase of foam aggregative index. When polymer concentration is 1000mg/L, foam has high foaming ability and stability, and strong foam is formed.