| 一种表征原油流变结构随温度变化的新方法 |
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| 引用本文： | 李传宪,李琦瑰,郑树贵. 一种表征原油流变结构随温度变化的新方法[J]. 中国石油大学学报(自然科学版), 2000, 24(5) |
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| 作者姓名： | 李传宪 李琦瑰 郑树贵 |
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| 作者单位： | 1. 石油大学储运工程系,山东东营257062
2. 胜利油田孤岛采油厂 |
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| 基金项目： | 石油大学 (华东 )青年科研基金 |
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| 摘 要： | 含蜡原油在从高温到低温的变化过程中 ,由于蜡晶析出而具有不同的粘弹特性。粘弹性的强弱与原油中的蜡晶浓度、蜡晶聚集状态和相互作用性质以及液态油的组成等所形成的流变结构有关。对中原和长庆原油的实验表明 ,原油在小振幅剪切振荡实验条件下粘弹性参数的大小及其特殊变化温度可以综合反映原油的流变结构随温度变化的特点 ,并可用于评价改性原油的改性效果。
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| 关 键 词： | 原油 粘弹性 流变结构 剪切振荡 |
A NEW METHOD FOR DESCRIBING RHEOLOGICAL STRUCTURE IN CHANGING WITH TEMPERATURE |
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| LI Chuan-xian,LI Qi-gui,ZHENG Shu-gui. A NEW METHOD FOR DESCRIBING RHEOLOGICAL STRUCTURE IN CHANGING WITH TEMPERATURE[J]. Journal of China University of Petroleum (Edition of Natural Sciences), 2000, 24(5) |
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| Authors: | LI Chuan-xian LI Qi-gui ZHENG Shu-gui |
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| Abstract: | Waxy crude oil has different viscoelasticities at different temperature for wax crystal precipitation. The viscoelasticitiy is related to rheological structure decided by wax crystal concentration, state of waxy crystal aggregating and interaction among them, and composition of liquid oil. The experiments on Zhongyuan crude oil and Changqing crude oil show that viscoelastic parameters under the experimental condition of small shear oscillation amplitude can describe the rheological structure properties of crude oil in changing with temperature, and can be used to evaluate the rheological result of modified crude oil. |
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| Keywords: | crude oil viscoelasticity rheological structure shear oscillation |
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