高温高盐对阳离子双子表面活性剂表面活性的影响研究  

The Effects of High Temperature and High Salinity on Surface Activity of Cationic Gemini Surfactant

作　　者：苏鑫[1,2] 王碧清[1] 李俊秀 罗健生 蔡久能 冯玉军[1] 

机构地区：[1]中科院成都有机化学研究所,四川成都610041 [2]中国科学院研究生院,北京100039 [3]天津中海油服化学有限公司,天津300301 [4]中海油服油田化学事业部技术中心,河北065201

出　　处：《内蒙古石油化工》2011年第7期1-4,共4页Inner Mongolia Petrochemical Industry

基　　金：中国科学院支持天津滨海新区建设科技行动计划项目(TJZX2-YW-04);四川省科技厅青年基金项目(07ZQ026-122);四川省科技攻关项目(2008GZ0004)

摘　　要：考察了25℃条件下商品化阳离子双子表面活性剂PF-CGS在纯水、饱和NaCl盐水及含1000mg·L-1Ca2+、Mg2+的饱和NaCl盐水溶液中的表面张力行为,并对上述条件下的表面活性剂溶液在130℃下热滚16h后测定表面张力以进行对比研究。研究发现,与在纯水中的表面活性相比,随着无机盐的加入,PF-CGS溶液的CMC、C20和γCMC均降低,表面活性升高;经高温老化后的PF-CGS溶液的(CMC无明显变化,但CMC和C20均比老化前有所下降,表面活性有一定程度提高。上述实验结果表明,高温、高盐不会削弱阳离子双子表面活性剂PF-CGS的表面活性,该类表面活性剂完全可以适用于高温、高盐的油气开采环境。The surface activities of a commercial cationic gemini surfactant PF-CGS at 25℃ in pure water,saturated NaCl brine,as well as saturated NaCl brine containing 1000 mg·L-1 Ca2+ and Mg2+ were examined.For comparison,the surface activities of these solutions after 16h of age at 135℃ were also investigated.It was found that CMC,C20 and γCMC of PF-CGS solution would decrease upon increasing salinity of the surfactant solution,and after ageing,γCMC did not change,while CMC and C20 decreased in some extent compared with those found in non-aging solutions.These results shows cationic gemini surfactant posses good salt-tolerance and hear-resistance and has good potential to be used in high-temperature and high-salinity oil reservoir environment.

关 键 词：双子表面活性剂 表面张力 老化 高温 高盐度 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]