Fig. 10.
Asphaltene removal, at pore scale, by ultrasonic waves (20 kHz, 1000 W) at different sonication times for square patterned micromodel S-2 (a) 0 mins (b) 78.5 mins (c) 83 mins (d) 88 mins (e) 101.5 mins (f) 120 mins.
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