Wettability is a tendency of the liquid to spread on a solid surface. In enhanced oil recovery wettability plays an important role as that determines the interactions between the solid (rock) and the liquids in the reservoirs (crude oil, brine).

Is wettability Good or bad?

Wettability can be measured through contact angle

When the contact angle is above 90° the wettability is bad, when it is below 90° the wettability is good.

Why is wetting important for good adhesion?

Good wetting provides a larger area of contact where these forces may act. ... Consequently, good wetting is crucial for good bond formation. The degree of wetting of any given substrate can be attributed to the surface tension or the critical surface energy of the substrate and the adhesive.