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- W2073482827 abstract "After polymer flooding was put into effect in DaQing oilfield, eccentric wear of sucker rod and tubing has been so serious that it made the rods break. This is because production liquid produced from normal wells is pure viscous fluid while liquid produced from polymer flooding oil wells is viscoelastic fluid. The flow equation of viscoelastic fluid in eccentric annulus was established in cylinder coordinate system, and the velocity distribution was solved. Based on upper-convected Maxwell constitutive equation, the normal stress calculating model of viscoelastic fluid acting on sucker rods was established. The normal stress of viscoelastic fluid acting on inner rod in eccentric annulus was measured under different experimental conditions indoors. The result proves that normal stress is the main reason of eccentric wear." @default.
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- W2073482827 date "2012-11-01" @default.
- W2073482827 modified "2023-09-27" @default.
- W2073482827 title "Causes Analysis of Eccentric Wear of Sucker Rod in Produced Fluid with Polymer" @default.
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- W2073482827 doi "https://doi.org/10.4028/www.scientific.net/amr.594-597.2744" @default.
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