Wettability Alteration of Sandstone by Chemical Treatments

Table 1

Contact angle of the sandstone after treated with FG1105.

Concentration of FG1105 (%)	0.05	0.1	0.2	0.3	0.5
Contact angle (°)
Brine	50	45	46	42	36
Normal decane	10	10	0	0	0