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Which outcome is observed as injection rate rises during enhanced oil recovery employing polymer flooding?

A)Reduced interfacial tension is detected
B)Reduced water coning becomes significant
C)Increased viscous fingering intensifies
D)Increased polymer degradation accelerates

💡 Explanation

Increased injection rate makes viscous forces less dominant; therefore, viscous fingering intensifies because decreased viscous damping occurs with higher flow, influencing relative permeability rather than causing other molecular behaviors or polymer reactions at constant concentration.

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