SB-16/SDS复配微乳液驱油体系性能研究

doi:10.13218/j.cnki.csdc.2018.01.003

摘要/Abstract

摘要： 为提高低渗透油藏采收率,研究了十六烷基磺基甜菜碱(SB-16)和十二烷基硫酸钠(SDS)按不同质量比复配所得表面活性剂体系的临界胶束浓度(cmc)和相应的表面张力(γ_cmc),得到该复配体系的最佳复配质量比为7∶3,此时cmc=0.025 g/L,γ_cmc=26.7 mN/m,进而以该复配体系为表面活性剂,研究不同质量分数、不同链长的醇类为助表面活性剂时对体系界面张力与乳化率的影响,最终确定质量分数为4%的复配体系+2%的异丁醇为最佳配方,在该条件下可以使油/水界面张力降至超低界面张力数量级(10^-3 mN/m)。实验结果表明,在低渗透岩心中,复配微乳液驱油体系较水驱可以提高采收率10个百分点,效果较好。

关键词: 十六烷基磺基甜菜碱, 十二烷基硫酸钠, 复配比, 微乳液驱, 界面张力

Abstract: In order to improve the recovery of low permeability crude oil reservoir,a series of tests and research work with respect to the use of blend surfactant composed of cetylsulfobetain (SB-16) and sodium dodecyl sulfate (SDS) were conducted.Results show that the suitable mass ratio of SB-16 and SDS is 7∶3 while the critical micelle concentration (cmc) is 0.025 g/L and the surface tension (γ_cmc) is 26.7 mN/m.Based upon such results,the effects of mass fraction of alcohols of different carbon chain length on the interfacial tension and emulsifying performance were studied.The study recommends that 4% mass fraction of the above-mentioned blend surfactant system+2% iso-butanol is the best formulation.Under these conditions,the interfacial tension of the oil and water can be reduced to the order of ultra-low interfacial tension (10^-3 mN/m).Experiments show that in the low permeability core,this microemulsion flooding system can improve crude oil recovery than the water flooding 10 percentage points.Obviously,the effect is better.

Key words: cetylsulfobetaine, sodium dodecyl sulfate, blend ratio, microemulsion flooding, interfacial tension

中图分类号:

TQ423

殷代印, 仲玉仓. SB-16/SDS复配微乳液驱油体系性能研究[J]. 日用化学工业, 2018, 48(1): 14-17.

YIN Dai-yin, ZHONG Yu-cang. Performance of SB-16/SDS blend surfactant microemulsion flooding system[J]. China Surfactant Detergent & Cosmetics, 2018, 48(1): 14-17.

参考文献

[1] 史雷城.新型磺基甜菜碱两性表面活性剂的设计合成与性能[D].大庆:东北石油大学,2012.
[2] 陈业泉,曹绪龙,王德顺,等.胜利油区复合驱油体系研究及表面活性剂的作用[J].精细石油化工,2001(5):19-21.
[3] 李萍,杜志平,王国永,等.表面活性离子液体的表面性能及在水溶液中聚集行为的研究进展[J].日用化学工业,2015,45(7):397-403,408.
[4] 徐浩,黄亚茹,雷小英,等.磺基甜菜碱的合成及在三次采油中的应用[J].日用化学品科学,2015,38(2):31-34,38.
[5] 董燕超,李玲,方云.三次采油用磺基甜菜碱的研究进展[J].石油化工,2013,42(5):577-581.
[6] 于涛,杨柳,曹绪龙,等.磺基甜菜碱型两性离子表面活性剂的相行为研究[J].化学工业与工程技术,2013,34(5):61-65.
[7] Rubingh D N,Mittal K L.Solution chemistry of surfactants [M].New York:Plenum Press,1979:254-337.
[8] 吴文祥,殷庆国,刘春德.磺基甜菜碱SB系列复配表面活性剂界面特性研究[J].油气地质与采收率,2009(6):67-69,114-115.
[9] 刘宣池,张亚刚,于二雷,等.复配表面活性剂-模拟油-水体系的界面张力研究[J].日用化学工业,2016,46(4):208-211.
[10] 刘宏生,杨莉,高芒来.磺基甜菜碱与烯烃磺酸盐复配体系的溶液特性[J].中国石油大学学报(自然科学版),2014(4):169-173.
[11] Stellner K L,Amante J C,Scamehorn J F,et al.Precipitation phenomena in mixtures of anionic and cationic surfactants in aqueous solutions [J].Journal of Colloid and Interface Science,1988,123(1):186-200.
[12] 闫义田,王克亮,王娟,等.复配表面活性剂对三元复合体系界面张力影响研究[J].石油与天然气化工,2006(3):224-225.
[13] 祝丽丽,康保安,孙永强,等.阴阳离子复配体系的表面活性及应用性能[J].日用化学工业,2013,43(3):163-168.
[14] 李文宏,李彩云,吕思思,等.CHSB/BABS复配表面活性剂驱油体系性能研究[J].油田化学,2015,32(3):381-386.
[15] 谭晶,曹绪龙,李英,等.油/水界面表面活性剂的复配协同机制[J].高等学校化学学报,2009,30(5):949-953.
[16] Zhang H,Pierre D,He H,et al.Molecularly imprinted stationary phase prepared by reverse micro-emulsion polymerization for selective recognition of gatifloxacin in aqueous media [J].Journal of Chromatographic Science,2012,50(6):64-68.
[17] 张可,任艳滨,卢祥国.复配表面活性剂对复合驱油体系性能影响研究[J].日用化学工业,2007,37(5):305-308.
[18] 张雪勤,蔡怡,杨亚江.两性离子/阴离子表面活性剂复配体系协同作用的研究[J].胶体与聚合物,2002(3):1-5.
[19] 傅明连,郑炳云,陈彰旭,等.两性/阴离子表面活性剂复配体系性能研究[J].应用化工,2010,39(1):27-29.
[20] 周冰灵.微乳液的制备及其驱油效果评价[D].大庆:东北石油大学,2016.