纳米SiO_2强化阴/阳/非离子表面活性剂复配体系泡沫性能实验研究  

Experimental study on foam performance of nano-SiO_2 reinforced anionic/cationic/nonionic surfactant compounded system

作　　者：王健[1] 吴一慧[1] 呙瑜成 金庭浩 邓虹 

机构地区：[1]长江大学石油工程学院,湖北武汉430100 [2]中石化西北油田分公司采油一厂,新疆轮台841600

出　　处：《精细与专用化学品》2018年第1期33-37,共5页Fine and Specialty Chemicals

基　　金：长江大学横向科研项目资助(2014H1133)

摘　　要：以阳离子双子表面活性剂为主,通过阴/阳/非离子表面活性剂复配(阴/阳/非离子表面活性剂体积比为2∶1∶3),获得了低界面张力体系ANO(界面张力为1.1×10-2 mN/m)。在高矿化度(60000mg/LNaCl+2000mg/LCaCl2)条件下,研究了纳米SiO_2对ANO界面张力与泡沫性能的影响。结果表明:纳米SiO_2对ANO界面张力并未产生明显的协同效应,但对ANO泡沫性能产生了较大的影响;70℃下,0.005%的纳米SiO_2显著增加了ANO的起泡稳泡性,在纳米SiO_2浓度大于0.1%时,体系呈现起泡性下降,稳泡性上升的趋势;80℃时已无法测定ANO起泡稳泡性,在加入了0.2%浓度的纳米SiO_2后,体系起泡高度为204mm,半衰期为35min。A low interfacial tension system ANO（the interfacial tension is 1.1×10^-2 mN/m）was obtained by combining the anionic/cationic/nonionic surfactant（volume ratio is 2∶1∶3）.Under the condition of high salinity（60000 mg/L NaCl＋2000 mg/LCaCl2）,the effect of nano-SiO2 on the interfacial tension and foam properties of ANO was studied.The results show that nano-SiO2 does not produce obvious synergistic effect on ANO interfacial tension,but has a great influence on ANO foam performance;At 70℃,0.005% nano-SiO2 significantly increased the foam ability and foam stability of ANO.When the concentration of nano-SiO2 was more than 0.1%,the system showed a decrease in foaming ability and a tendency to increase foam stability.At the temperature of 80℃,foaming ability and foaming stability can not be measured ANO,after adding 0.2% concentration of nano-SiO2,foaming height of the compounded system is 204 mm,half-life is 35 min.

关 键 词：表面活性剂 纳米颗粒 界面张力 协同效应 稳泡性 高温 高矿化度 

分 类 号：TQ423.9[化学工程]