This document summarizes a presentation on fracture proppant selection. It discusses the types and functions of proppants, and considerations for selection including proppant pack conductivity, size for sand control, and surface wetting properties. Proppant pack conductivity depends on particle size and applied stress. Wetting properties are characterized by liquid contact angles, and influence flow behavior for oil and water production. The presentation provides methods to determine permeability reduction from sand invasion and efficiently measure contact angles using the drop volume technique.