Fig. 34

Magnified micro images from matrix during tertiary injection of 10xdSW + 1000ppm HPAM, showing the dominant peeling off mechanism on the wetting oil layers at the later stages of flooding.

Magnified micro images from matrix during tertiary injection of 10xdSW + 1000ppm HPAM, showing the dominant peeling off mechanism on the wetting oil layers at the later stages of flooding.