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| W/O型含蜡原油乳状液屈服特性研究 | |
| 引用本文： | 国丽萍,王磊,宋宇波.W/O型含蜡原油乳状液屈服特性研究[J].科学技术与工程,2011,18(18). |
| 作者姓名： | 国丽萍 王磊 宋宇波 |
| 作者单位： | 1. 东北石油大学石油工程学院,大庆,163318 2. 大庆油田勘探开发研究院,大庆,163712 3. 大庆油田采油工程研究院,大庆,163453 |
| 摘 要： | 屈服特性是W/O型含蜡原油乳状液重要的依时流变特性。本文利用VT550流变仪对3种物性不同的含蜡原油，在恒定剪切速率加载方式条件下，研究了其W/O型胶凝含蜡原油乳状液的屈服特性。发现凝点附近的W/O型含蜡原油乳状液形成水滴被包裹在蜡晶结构之中的胶凝体系，只有当剪切应力既能破坏蜡晶的空间网状结构，又能克服分散相液滴间的作用力时，体系才能够屈服产生流动，因此，W/O型乳状液的屈服应力明显高于脱水原油。当体积含水率较低时，屈服应力随含水率的增加幅度较小；当体积含水率较高时，屈服应力随含水率的增加幅度较大。并根据实验结果，总结提出了屈服应力与体积含水率之间的关系式。 |
| 关 键 词： | 含蜡原油，乳状液，屈服，含水率 |
| 收稿时间： | 2011/3/13 0:00:00 |
| 修稿时间： | 2011/3/13 0:00:00 |
Study on yield Behavior of Water-in-Oil Emulsions of Waxy Crude Oil |
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| guoliping,and.Study on yield Behavior of Water-in-Oil Emulsions of Waxy Crude Oil[J].Science Technology and Engineering,2011,18(18). | |
| Authors: | guoliping and |
| Institution: | GUO Li-ping1,WANG Lei2,SONG Yu-bo3(Northeast Petroleum University petroleum engineering institute1,Daqing 163318,P.R.China,Exploration and Development Research Institute,Petrochina Daqing Oil Field Company Limited2,Daqing 163712,Daqing Oilfield Production Technology Institute3,Daqing 163453,P.R.China) |
| Abstract: | Yield is an important time dependent rheological behavior of water-in-oil emulsion of waxy crude oil.In order to study the yield behavior of W/O emulsion of gelled waxy crude oil at constant shear rate,three different types of waxy crude oil were studied experimentally by using RS150H rheometer.For the gelled system of W/O emulsion at the temperature around the gel point,water droplets are wrapped in waxy-crystal structure,flows occur only when the shear stress could breaks wax-crystal structure and overcom... |
| Keywords: | Waxy crude Emulsion yielding water fraction |
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