重烷基苯磺酸盐溶液中混合无机碱对大庆原油界面流变性质的影响  

Effect of Mixing Inorganic Alkalis and Heavy Alkylbenzene Sulfonate Solutions on the Dilational Rheological Properties of Daqing Crude Oil

作　　者：伍晓林[1] 楚艳苹[1] 周贺 罗庆[1] 侯兆伟[1] 张磊[2] 张路[2,3] WU Xiaolin,CHU Yanping,ZHOU He,LUO Qing,HOU Zhaowei,ZHANG Lei,ZHANG Lu(1Exploration and Development Research Institute Daqing Oil Field Company Ltd.,Daqing 163712,China;2.Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China;3.School of Chemistry,Chemical Engineering and Life Sciences,Wuhan University of Technology,Wuhan 430070,Chin)

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [2]中国科学院理化技术研究所,北京100190 [3]武汉理工大学化学化工与生命科学学院,湖北武汉430070

出　　处：《石油学报（石油加工）》2018年第3期538-544,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金项目(21703269)资助

摘　　要：为阐明碱对化学驱体系界面性质的影响规律,利用振荡滴方法系统研究了重烷基苯磺酸盐与大庆原油间的界面扩张流变性质,考察了无机碱对重烷基苯磺酸盐-大庆原油界面性质的影响。研究发现,重烷基苯磺酸盐分子与大庆原油中活性组分混合吸附,形成具有一定强度的界面膜,界面扩张模量和相角随重烷基苯磺酸盐质量分数的增加变化较小。无机碱与大庆原油中的石油酸作用,随碱质量分数增大和碱性增强,界面膜强度不断增大。NaOH与重烷基苯磺酸盐之间存在协同效应,明显增大界面扩张模量,有利于原油乳化;而Na2CO3和NaHCO3破坏重烷基苯磺酸盐界面膜的结构,造成界面扩张模量降低。In order to expound the effect of alkali on the interfacial properties of chemical flooding system,the interfacial rheological properties of film between heavy alkylbenzene sulfonate（HABS）solutions and Daqing crude oil in the absence or presence of alkalis have been systematically studied by oscillating pendant drop method.Results show that the interfacial film with specific strength is formed by adsorbing HABS and active components molecules in crude oil.The modulus and phase angle is slightly varying with the increase of surfactant concentration.However,the strong alkali reacts with the petroleum acids in Daqing crude oil,thus the strength of mixed interfacial film improves gradually with the increases of alkali concentration.It benefits to the formation of crude oil emulsion.On the other hand,weak base destroys the structure of HABS film,resulting in the decrease of modulus.

关 键 词：重烷基苯磺酸盐 碱 界面扩张模量 相角 大庆原油 

分 类 号：O647[理学—物理化学]