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← ScienceWhich 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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