V iscoelastic behavior and its effect on pumping energy under the influence of petroleum extract
Keywords:
viscoelastic behavior, emulsions, yield stressAbstract
The aim of this study is to determine how the aromatic compound tetrahydrofuran affects the rheological behavior of the oil and the percentage of energy consumption during the pumping process at 20, 30 and 50°C. In this study, the chemical additive was added at concentrations of 3000, 6000 and 9000 ppm. The AR-2000 rheometer of the TA instrument was used for rheological modeling, measurement of viscosity, yield point, and viscoelastic characteristics of crude oil. The results obtained show that tetrahydrofuran has a significant effect on rheological parameters and pumping energy during oil flow. With the addition of additives, the viscosity of crude oil decreased more than 34%, the power consumption of the pump by 26.90%. At a concentration of 9000 ppm, the yield stress is reduced more than 41%. The effect of the compound is significant at low shear rates, where the behavior is non-Newtonian, then decreases with increasing shear rates, where the behavior becomes Newtonian. The addition of tetrahydrofuran shows a greater effect on the greater viscous modulus compared to the elastic modulus and the crude oil has the characteristic of a viscous liquid.
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