Structurization and Effective Viscosity of a Non-Newtonian Oil

An analysis of the behavior of non-Newtonian oils in the process of formation and destruction of their structure with the participation of resinous-asphaltenic materials has been performed. The conditions of formation of coagulation structures and the possibilities of their destruction were determined. A general rheological equation defining the possible behavior of non-Newtonian oils in different cases has been derived, and its effectiveness was substantiated with the use of available experimental data. The dependences of the effective viscosity of non-Newtonian oils on the rate of their shear and the content of resinous-asphaltenic materials in them were constructed. It was established that the asphaltenes, resins, and paraffins, contained in an oil, substantially influence its rheological properties and, consequently, the movement of the oil and its transportation.