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.

adj: pertaining to a colloid. i.e., involving particles so minute (less than 2 microns) that they are not visible through optical microscopes. Bentonite is an example of a colloidal clay.

n: See clay size.

n: a measure of the ability of a colloidal dispersion to develop and retain a gel form, based on its resistance to shear. The gel. or shear, strength of a drilling mud determines its ability to hold solids in suspension. Sometimes bentonite and other colloidal clays are added to drilling fluid to increase its gel strength.

n: a parameter used to measure the shear strength of the mud and its ability to hold solids suspension.bentonite and other colloidal clays are added to the mud to increase gel strength.

the ability of a fluid to suspend solids.