(vb.) Drilling Fluids. To disperse a substance into a colloidal form or to disperse a clay in water to form a colloidal suspension. See: Clay Extender, Clay-Water Interaction, Colloid, Ion Exchange, Low-Solids Mud, Low-Solids, Nondispersed Mud, Montmorillonite, Peptization, Peptized Clay, Peptizing Agent