Numerical Simulation of Residual Oil Flooded by Polymer Solution in Microchannels

Table 2

Advancing and receding contact angle (initial wetting angle).

Wetting angle	Initial wetting angle (°)
	30	45	60
Advancing angle θa (°)	104.33	110.57	127.98
Receding angle θr (°)	15.36	20.42	27.06