甜菜碱和十六烷基三甲基溴化铵复配体系的性能研究  

Study on the Properties of Binary System of Betaine and Cetyltrimethylammonium Bromide

作　　者：卢国强 穆蒙 唐绪涛 张永民 LU Guoqiang;MU Meng;TANG Xutao;ZHANG Yongmin(Key Laboratory of Synthesis and Biocolloid,Ministry of Education,College of Chemistry and Materials Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China;Postdoctoral Scientific Research Working Station of Shengli Oilfield,SINOPEC,Dongying,Shandong 257067,China;Key Laboratory of Green Cleaning Technology and Detergents,Hangzhou,Zhejiang 310056,China)

机构地区：[1]江南大学化学与材料工程学院合成与生物胶体教育部重点实验室,江苏无锡214122 [2]中石化胜利油田博士后管理站,山东东营257067 [3]浙江省绿色清洁技术及洗涤用品重点实验室,浙江杭州310056

出　　处：《中国洗涤用品工业》2023年第7期42-48,共7页China Cleaning Industry

基　　金：国家自然科学基金资助项目(22072058,21503094)。

摘　　要：为了应对高温、高盐油藏采收率差的问题,通过十二烷基羧基甜菜碱(B)和阳离子表面活性剂十六烷基三甲基溴化铵(CTAB)进行组合,在80215.8 mg/L盐度下通过界面张力筛选出了最佳比例为m(B)∶m(CTAB)=5∶5。进一步在室内研究了该二元复合驱的耐盐耐温性、乳化性、润湿能力、静态吸附及洗油效率。结果表明,该二元复合驱具有较好的耐盐耐温性能,能在200539.4 mg/L盐度、130℃下恒温稳定7 d后的界面张力依然能达到超低界面张力水平(10-3 mN/m)。除此之外,B-CTAB复合驱乳化性能优秀,85℃下恒温24 h发现其析水率(析出水的体积占初始水相体积的百分比)为20%左右;并且该二元复合驱能将亲油表面变成亲水表面,玻璃板表面润湿性发生反转;45℃下经过石英砂吸附7 d并未造成该复合驱的明显损失,其界面张力依然可以达到超低。85℃下该二元复合驱的对油砂的洗油效率为68.58%,在水驱的基础上提高采收率18.58%以上。To cope with the poor recovery of high temperature and high salt reservoirs,the best ratio of m_((B))∶m_((CTAB))=5∶5 was screened by interfacial tension at 80215.8 mg/L salinity using a combination of dodecyl betaine(B)and cationic surfactant cetyl trimethyl ammonium bromide(CTAB).The salt and temperature resistance,emulsification,wettability,static adsorption and oil washing efficiency of this binary composite drive were further investigated indoors.The results show that the binary composite drive has excellent salt and temperature resistance,and the interfacial tension can still reach the ultra-low interfacial tension level(10^(-3) mN/m)after 7 days with constant temperature stabilization at 200539.4 mg/L salinity and 130°C.In addition,the emulsification performance of B-CTAB compound drive is excellent,and the water evolution rate(the volume of evolutional water as a percentage of the initial aqueous phase volume)is about 20%at a constant temperature of 85℃for 24 h,and the demulsification speed is slow.Moreover,the binary composite drive can turn the lipophilic surface into hydrophilic surface,and the wettability of the glass plate surface is reversed;the composite drive does not lose significantly after 7 days of quartz sand adsorption at 45℃,while the interfacial tension can still reach ultra-low.The oil washing efficiency of this binary composite drive for oil sands at 85℃ is 68.58%,which improves the recovery by more than 18.58%on the basis of water drive.

关 键 词：二元复合体系 耐温耐盐 乳化 润湿反转 抗吸附 洗油效率 

分 类 号：TQ423[化学工程]