油酸钠复配型乳化剂对辽河稠油降黏实验研究  

Experimental study on viscosity reduction of Liaohe heavy oil by sodium oleate compound emulsifier

作　　者：赵航 吴玉国[1] 李小玲[1] 周明琪 唐雷 ZHAO Hang;WU Yuguo;LI Xiaoing;ZHOU Mingqi;TANG Lei(College of Petroleum and Natural Gas Engineering,Liaoning Petrochemical University,Fushun 113001,China)

机构地区：[1]辽宁石油化工大学石油天然气工程学院,辽宁抚顺113001

出　　处：《应用化工》2024年第6期1333-1337,1342,共6页Applied Chemical Industry

基　　金：辽宁省博士科研启动基金计划项目(2020-BS-227);辽宁省教育厅科学研究项目(L2020024);辽宁省高等学校创新人才支持计划项目(2020-68)。

摘　　要：以辽河油田脱气稠油为研究对象,通过阴离子、非离子表面活性剂和碱剂复配,研究了其对稠油的降黏效果和乳状液的动态稳定性。优选出最佳的复配体系,并从微观角度考察了界面张力和液滴粒径在复配体系下对乳状液稳定性的影响。结果表明,4种单一表面活性剂均降低了稠油乳状液的黏度,其中阴离子表面活性剂中油酸钠的降黏性能显著,但稳定性稍差。二元复配体系中,油酸钠和APE-9的溶质比为6∶1,协同效果最佳,稠油乳状液不仅黏度降低而且稳定性提高,降黏率持续在97%以上。三元体系中,Na_(2)CO_(3)的加入进一步降低了界面张力,同时增大了乳状液的液滴粒径,表现出良好的动态稳定性。This paper takes degassed heavy oil in Liaohe oilfield as the research object,by compounding anionic,non-ionic surfactants,and alkaline agents,studied its viscosity reducing effect on heavy oil and the dynamic stability of emulsion.The optimal compounding system was selected and the effects of interfacial tension and droplet size on the stability of emulsions in compounding systems were investigated from a microscopic point of view.The results showed that all the four single surfactants reduced the viscosity of heavy oil emulsions,among which sodium oleate had significant viscosity reduction effect,but the stability is slightly poor.In the binary compounding system,the solute ratio of sodium oleate to APE-9 is 6∶1,with the best synergistic effect,heavy oil emulsions not only reduces viscosity but also improves stability,and the viscosity reduction rate continues to be above 97%.In ternary system,the addition of Na_(2)CO_(3) further reduces the interfacial tension and increases the droplet size of the emulsion,exhibiting excellent dynamic stability.

关 键 词：稠油乳状液 表面活性剂 乳化降黏 碱剂 界面张力 平均粒径 

分 类 号：TQ423.9[化学工程] TE391[石油与天然气工程—油气田开发工程]