Abstract
The rheological properties of crude oils from Yuzhno-Inzyreisk and Vostochno-Khar’yaginsk fields in Arkhangel’sk Oblast were investigated at different temperatures and shear rates. The anomalies of these properties are due to the high concentration of waxes capable of phase transitions in the crudes. The activation energy of viscous flow, which increased with the wax content in the crudes, was determined with the dependence of the logarithm of the viscosity on the reciprocal of the temperature. Treatment with a high-frequency electromagnetic field significantly decreases the viscosity of the crudes.
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