Page 31 - Hybrid Enhanced Oil Recovery Using Smart Waterflooding

CHAPTER 1 History of Low-Salinity and Smart Waterflood 23

1.2
Apparent shift Stage 1: Product Tracer (EtOH)
Stage 3: Product Tracer (EtOH)
1.0
Normalized product tracer concentration 0.8
~ 7 Saturation
unit reduction

0.6

0.4

0.2

0.0
0 200 400 600 800 1000
Total liquid production (bbls)

FIG. 1.21 Comparison of field-measured tracer concentration profiles of SWCTT between seawater and 10-
times-diluted seawater injections for Well A. (Credit: From Yousef, A. A., Liu, J. S., Blanchard, G. W., Al-Saleh,
S., Al-Zahrani, T., Al-Zahrani, R. M., et al. (2012b). Smart waterflooding: Industry. Paper presented at the SPE
Annual technical conference and exhibition, San Antonio, Texas, USA, 8e10 Ocotober. https://doi.org/10.
2118/159526-MS.)

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