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Dong Zhang, Shuo Liu, Jing-Yu Xu
Rheological properties of heavy crude oil containing sand from Bo-hai oilfield in China
Appl. Rheol. 27:2 (2017) 24849 (9 pages)
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This paper presents an experimental study on the rheological properties of heavy crude oil containing sand to determine the
effects of sand size distribution and mass concentration on apparent viscosity, thixotropic behavior, yield stress and viscoelastic
properties. The results of these analyses demonstrate that heavy crude oil containing sand shows strong shear-thinning behavior
and a certain degree of thixotropic properties. After blending heavy crude oil with sand, the apparent viscosity and the area
of the thixotropic loop first decrease and then steadily increase with increasing sand mass concentration. At a fixed mass concentration,
apparent viscosity appears to increase with increasing particle size, while yield stress decreases. Moreover, adding
sand generally enhances the elastic modulus of heavy crude oil, while the complex viscosity remains slightly less than the
apparent viscosity. These results provide new information helpful for removing sand from heavy crude oil.
► Cite this publication as follows:
Zhang D, Liu S, Xu j: Rheological properties of heavy crude oil containing sand from Bo-hai oilfield in China, Appl. Rheol. 27 (2017) 24849.
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