摘要
为获得耐温抗盐和降黏效果良好的稠油降黏剂,以油酸、N,N-二甲基-1,3-丙二胺、1,3-丙磺酸内酯为原料制备了磺基甜菜碱表面活性剂YJN-1,既能作为油溶性降黏剂又能作为乳化降黏剂,具有一剂双效的功能。研究了YJN-1加量和温度对稠油的降黏效果,考察了YJN-1作为乳化降黏剂时的耐温抗盐性。结果表明,作为油溶性降黏剂时,在50℃、0.5%的加量下,YJN-1对新疆和胜利稠油的降黏率约为91%,降黏效果优于部分商品降黏剂;作为乳化降黏剂时,在50℃下,0.15%的YJN-1对两种稠油的乳化降黏率约为99%;乳液能自动破乳脱水,脱水率为96.4%~98.2%。YJN-1具有良好的耐温抗盐性能,抗盐达85 g/L,耐温达160℃,耐温抗盐和降黏效果良好。
In order to obtain a heavy oil viscosity reducer with good temperature resistance,salt resistance and viscosity reduction,sulfobetaine surfactant YJN-1 was prepared by oleic acid,N,N-dimethyl-1,3-propanediamine and 1,3-propanesultone.YJN-1 could be used not only as an oil-soluble viscosity reducer but also as an emulsifying viscosity reducer,showing a dual-effect function.The effects of YJN-1 dosage and temperature on the viscosity reduction of heavy oil were studied.The temperature resistance and salt resistance of YJN-1 as an emulsifying viscosity reducer were investigated.The experiment results showed that as an oil-soluble viscosity reducer,the viscosity reduction rate of YJN-1 to Xinjiang and Shengli heavy oil was about 91%under the condition of 50℃and 0.5%dosage,whose viscosity reduction effect was better than that of some commercial reducers.As an emulsification viscosity reducer,0.15%YJN-1 had an emulsification viscosity reduction rate of about 99%for two heavy oils at 50℃.The emulsion could be dehydrated automatically,and the dehydration rate was 96.4%-98.2%.YJN-1 had good resistance of temperature(160℃)and salt(85 g/L),and good viscosity reduction.
作者
于世虎
YU Shihu(Sichuan Chuanqing Downhole Science & Technology Co. Ltd,CCDC Downhole Service Company,Guanghan,Sichuan 618300,P R of China)
出处
《油田化学》
CAS
CSCD
北大核心
2019年第3期518-522,共5页
Oilfield Chemistry
关键词
稠油
降黏剂
乳化
甜菜碱
表面活性剂
heavy oil
viscosity reducer
emulsification
betaine
surfactant
作者简介
于世虎(1987-),男,工程师,中国石油大学(华东)化学工程专业硕士(2014),从事油田化学添加剂应用及研发工作,通讯地址:618300四川省广汉市高店村四川川庆井下科技有限公司,E-mail:yushihu1987@163.com。
