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。
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.
出处
《石油大学学报（自然科学版）》
CSCD
2000年第5期76-79,共4页
Journal of the University of Petroleum,China(Edition of Natural Science)
基金
石油大学 (华东 )青年科研基金
关键词
原油
粘弹性
流变结构
剪切振荡
温度
crude oil
viscoelasticity
rheological structure
shear oscillation
