桩西原油/化学驱体系油水界面扩张流变性影响因素研究
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 DSA10 0型界面扩张流变仪对桩西原油/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NaCl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...
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| Published in | 石油与天然气化工 Vol. 46; no. 3; pp. 78 - 82 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
中海油田服务股份有限公司
2017
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| Subjects | |
| Online Access | Get full text |
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| Summary: | 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 DSA10 0型界面扩张流变仪对桩西原油/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NaCl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. |
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| Bibliography: | 51-1210/TE Chemical flooding technology is an important research direction in enhancing oil recovery. And oil-water interface dilatational rheology behavior plays a crmechanism of chemical flooding. In order to investigate the inlluence factors of dilatational rheology behavior ofoil-water interface, dilational rheology behavior ofZhuangxi crude oil-water interfacewas investigated by DSA100 interfacial dilatational rheometer. The result showed that： aging tme had significant effect on dilational rheological properties of oil-water interface; among fractions ofZhuangxi 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 distinctmaxima as a function of Zhuangxi crude oil concentration, while changes of viscous modulus were not obvious; dilationalmodulus and elasticmodulus of oil-water interface decreasedwith increase of NaCl concentration; after adding surfactants of OP series, elas |
| ISSN: | 1007-3426 |
| DOI: | 10.3969/j.issn.1007-3426.2017.03.016 |