دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a colloidal clay, composed primarily of montmorillonite, that swells when wet. Because of its gel-forming properties, bentonite is a major component of waterbase drilling muds. See gel, mud.

a reference to colloidal clay (generally montmorillinite or smectite),generates plastic viscosity due to clay behavior, size and electrostatic layer. A slurry of which used for P&A Purposes will weigh no less than 9 ppg.