Basic Fundamentals of Petroleum Rheology and Their Application for the Investigation of Crude Oils of Different Natures
Basic Fundamentals of Petroleum Rheology and Their Application for the Investigation of Crude Oils of Different Natures
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DOI：
10.1021/acs.energyfuels.7b03058
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发表时间：
2018-01-01
期刊：
影响因子：
5.3
通讯作者：
Strelets, Larisa A.
中科院分区：
文献类型：
--
作者：
Ilyin, Sergey O.;Strelets, Larisa A.
考虑了研究复杂流体流变性质的两种基本方法：稳定流和小振幅振荡剪切。该方法用于研究属于不同类别（轻质原油、重质原油、含蜡原油和沥青）的八种石油样品的流变特性。研究表明，原油的粘度如何取决于其性质、温度和施加的应力。为了表征油的粘性行为，可以使用其玻璃化转变温度：Williams-Landel-Ferry 方程可以构建粘度的通用温度依赖性。后者确定任何石油在感兴趣的温度下与其他温度下的粘度。论证了石油的线性和非线性粘弹性特性，并显示了各种原油的粘弹性表现。揭示了如何根据重油的粘度计算其倾点。
A pair of basic methods for investigating the theological properties of complex fluids were considered: steady flow and small amplitude oscillatory shear. The methods were applied to study rheological properties of eight petroleum samples belonging to different classes (light, heavy, waxy crude oils, and bitumen). It was shown how the-viscosity of a crude oil depends on its nature, temperature, and applied stress. To characterize the viscous behavior of oils, one can use their glass transition temperature: the Williams-Landel-Ferry equation makes it possible to construct a universal temperature dependence of the viscosity. The latter determines the viscosity of any petroleum at temperature of interest from that at some other temperature. Linear and nonlinear viscoelastic properties of oils were demonstrated, and the manifestations of viscoelasticity by various crude oils were shown. It was revealed how the pour point of heavy oil can be calculated from its viscosity.