Page 72 - Gas Wettability of Reservoir Rock Surfaces with Porous Media
P. 72
56 Gas Wettability of Reservoir Rock Surfaces with Porous Media
Microsyringe
Water or oil
Gas bubble
FIGURE 2.20
Schematic diagram of bubble capture method.
FIGURE 2.21
Screenshot of five points fitting model measuring θ gas (125.16 degrees).
temperature. The different concentrations of Zonyl8740 water solution are
imbibed into the cleaned glass capillary and set aside for 4 hours before it is
sealed and dried in air at room temperature.
In the liquid phase, the bubble capture method is adopted for measuring gas
contact angle, and the size of bubble is 5 μL. The experimental measuring
interface is displayed in Fig. 2.20. The measurement mode of contact angle is
five points fitting model (see Fig. 2.21). The aim is to choose two points on
