Table 1: Drag-reduction rate.

CodeMeasurementFluidReDR (%)

W-10x-yWater10000
W-15Water15000
W-20Water20000
W-25Water25000

C25-10x-yCTAC 25 ppm1000033
C25-15CTAC 25 ppm1500048
C25-20CTAC 25 ppm2000059
C25-25CTAC 25 ppm2500062

C40-10x-yCTAC 40 ppm1000032
C40-15CTAC 40 ppm1500034
C40-20CTAC 40 ppm2000052
C40-25CTAC 40 ppm2500059

W-20-zx-zWater20000
C25-20-zCTAC 25 ppm2000059
C40-20-zCTAC 40 ppm2000057