Influence of αolefin polymer drag reduction agent concentration on the efficiency of drag reduction
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Abstract:
The effects of an αolefin polymer drag reduction agent (DRA) created using solution polymerization on the efficiency of drag reduction are studied. The results show that αolefin polymer DRA begins to reduce drag when the concentration is 5 mg/L. Up to a constant value, the drag reduction percentage of the samples improves as the concentration increases. The drag reduction percentage drops rapidly as shearing times increase. The effects of polymer characteristics on drag reduction efficiency are further studied. Particle density and concentration are obtained through viscosimetry. The results show that with αolefin polymer DRA, the characteristic viscosity is lower, density is higher, particle concentration is lower, and molecular weight is higher resulting in improved drag reduction efficiency. Other conditions worsen drag reduction efficiency.
