Velocity Distribution of Viscoelastic Fluid Axial Flowing in Eccentric Annulus Based on the Upper-Convected Maxwell Model

Abstract:

After polymer flooding has been put into effect in Daqing oilfield, eccentric wear of sucker rod and tubing has been so serious that it made the rods break. In order to analyze the cause of eccentric wear based on the upper-convected Maxwell model, the flow equation of viscoelastic fluid in eccentric annulus was established in cylinder coordinate system. Then the equation was transformed in bipolar coordinate system and dispersed by control-volume method. The velocity distribution was solved by ADI methods and example was calculated which provides theory basis for solving eccentric wear problems.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 2736-2739
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.2736
• Online since: November 2012
• Authors: Xue Song Han, Fang Mei Li, Bao Jun Liu
• Keywords: Eccentric Annulus, Upper-Convected Maxwell Model, Viscoelastic Fluid

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