78
石油与天然气化工
CHEMICAL ENGINEERING OF OIL & GAS
桩西原油/化学驱体系油水界面扩张流变性影响因素研究
张博郑玉飞
中海油田服务股份有限公司
2017
摘要目前，化学驱技术是我国提高油田采收率的重要研究方向，而油水界面扩张流变性对于揭示化学驱的机理具有重要意义。为考察油水界面扩张流变性的影响因素，利用德国KRUSS公司的 DSA100型界面扩张流变仅对椎西原油/化学驱体系进行了研究。结果表明：老化时间对油水界面扩张流变性具有显著影响；在桩西原油各组分中，沥青质组分对于油水界面扩张流变性的影响居于主导地位；油水体系的扩张模量和弹性模量会随着原油浓度的增大而先增大后减小，黏性模量的变化则不明显；油水界面的扩张模量和弹性模量随NaCI浓度的增大呈下降的趋势；OP系列表面活性剂会使体系的弹性模量减小，增大黏性模量的贡献，且OP系列表面活性剂的环氧乙烷数越多，作用效果越强。
关键词化学驱桩西原油OP系列表面活性剂制扩张模量弹性模量黏性模量
中图分类号：TE357.46
文献标志码：A
D0I;10.3969/j.issn.1007-3426.2017.03.016
Study on influence factors of oil-water interface dilatational rheological
propertyofZhuangxicrudeoil/chemicalfloodingsystem
Zhang Bo, Zheng Yufei
China Oilfield Seruices Company Limited,Tianjin,Ching
Abstract: Chemical flooding technology is an important research direction in enhancing oil recovery. And oil-water interface dilatational rheology behavior plays a crucial role in revealing the mechanism of chemical flooding. In order to investigate the influence factors of dilatational rheology behavior of oil-water interface, dilational rheology behavior of Zhuangxi crude oil-water interface was investigated by DSAloo interfacial dilatational rheometer. The result showed that: aging time had significant effect on dilational rheological properties of oil-water interface; among fractions of Zhuangxi crude oil, asphaltene fraction had the most significant effect on oil-water interface dilational rheology; dilational modulus and elastic modulus of oil-water interface passed through distinct maxima as a function of Zhuangxi crude oil concentration, while changes of viscous modulus were not obvious; dilational modulus and elastic modulus of oil-water interface decreased with increase of NaCl concentration; after adding surfactants of OP series, elastic modulus would decrease and the contribution of viscous modulus on dilational modulus would increase, and the more epoxy ethane number of surfactants of OP series,thebetter the results.
Key words: chemical flooding, Zhuangxi crude oil, surfactant of OP series, dilatational modulus, elastic modulus, viscous modulus
98000902 CO；调驱关键技术优化研究及应用"(YSB15YF002)；中海油科研项目"潜西油田注人水水质控制技术研究"(YSB15YF008)。
作者简介：张博(1985一），河南漯河市人，中级工程师，2007年毕业于中国石油大学（华东)应用化学专业，大学学历（理学学士），现就职于中海油田服务股份有限公司，主要从事油田化学与提高采收率方面的研究工作，发表论文近10篇，多次荣获司局级
科技奖励。E-mail：bosking@163.com 万方数据