ABSTRACT
The modern oil transportation system is characterized by mixing of different type of crudes such as heavy resin-asphaltenic and light paraffinic crude. The obtained blend is typically described as incompatible and leads to structure formation, blocking pipelines and equipment. The aim of research is a comparative assessment of structural properties and thermodynamic activation parameters for viscous flow in crudes of various composition in a broad range of temperatures and shear rates and determination of incompatibilities of crudes of different nature. The Rheotesy RN 4.1 was employed in all of the rheological examination tests. Obtained results can be used for predicting and preventing structure formation during production, transport and storage of crudes with various content of solid paraffins, resins and asphaltenes.
