Classification of the kinematic viscosity of crude oil
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Does anyone know the criteria for classifying the viscosity of crude oil? Please let me know. How can kinematic viscosity be understood comprehensively?
Viscosity is generally not used as a criterion for classifying crude oil. The viscosity of crude oil at 50 degrees or 80 degrees is usually taken as a parameter for analyzing its properties. Generally, the lower the specific gravity of crude oil, the more light components it contains, and thus its viscosity is lower; the opposite is true as well. However, different types of crude oil have different elemental compositions, and even crude oils with the same specific gravity can differ in viscosity. Measurement of kinematic viscosity: at a constant temperature (light oil, 20 degrees ； For lubricating oils and heavy oils at 40, 50, 80, and 100 degrees, the kinematic viscosity of that oil at that temperature is equal to the product of the time it takes for the oil to pass through the capillary and the coefficient of the capillary. (I can do it but not express it well; I’m not sure if the original poster understands.)