【作者】 侯磊； 宋昌雨；

【Author】 L Hou,C.Y.Song College of Mechanical and Transportation Engineering, China University of Petroleum,Beijing 102249 China

【机构】 中国石油大学(北京)机械与储运工程学院；

【摘要】 引入分散度δ表征原油内部蜡晶结构分散程度随应力加载的变化,结合分数微积分理论建立含分散度的分数微积分流变模型,并结合胶凝含蜡原油的蠕变试验,将含分散度的分数微积分流变模型用于胶凝含蜡原油黏弹性蠕变的描述,得到相关模型参数,拟合精度高。结果表明胶凝含蜡原油性质呈现出随温度的单调性变化。实现了用一个含分散度的分数微积分流变模型描述某一温度下胶凝含蜡原油受到不同水平的恒定应力加载时的多条蠕变曲线。更多还原

【Abstract】 Dispersion parameterδwas introduced to characterize the disruption with shear stress of wax - crystal structure in crude oil.Rheological model based on dispersion parameter and fractional calculus was set up to describe creep of gelled wax crude oil,the model parameters were obtained and the results of model fitting were accurate.The results showed that the properties of gelled wax crude oil changed regularly as the temperature changed.It was feasible that multiple creep curves of gelled wax crude oil in a certain temperature could be described with one rheological model based on dispersion parameter and fractional calculus.更多还原