Rheological properties of crude oils in Yaregskoye and Yaraktinskoye oil fields

20th International Scientific Symposium of Students, Postgraduates and Young Scientists on "Problems of Geology and Subsurface Development"

Manzhai, V.N.^1 ; Monkam Monkam, Clovis Le Grand^1 ; Terre, D.A.^1

National Research Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk

634050, Russia^1

关键词: Arrhenius-Eyring equations;    High-content;    Hydrodynamic conditions;    Non-Newtonian fluids;    Rheological property;    Rotary viscometer;    Structural unit;    Viscous flow activation energy;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/43/1/012018/pdf
DOI  :  10.1088/1755-1315/43/1/012018

来源: IOP

【 摘 要 】

Rotary viscometer tests of crude oil with a high content of resins and asphaltenes (Yaregskoye oil field) and crude oil with high paraffin content (Yaraktinskoye oil field) have been conducted. The typical flow curves for these oil types have been plotted. It has been detected that these oils are non-Newtonian fluids, viscosity of which is dependent on shear rate. Based on Arrhenius-Eyring equation, calculations of viscous flow activation energy and complex structural unit (CSU) sizes have been performed. It has been stated that there is a tenfold reduction in CSU size in asphaltic crude oil with the increase in shear rate in a rotary viscometer, while particle size in paraffinic crude oil does not essentially change under the same hydrodynamic conditions.