دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: See attapulgus.

n: A colloidal, viscosity-building clay used principally in salt-water muds.

a colloidal, viscosity building clay used in water based muds. They generate viscosity due to the mechanical interference of their straw shaped bodies.

n: a slurry in crude or diesel oil containing any of the following materials or combinations: bentonite, cement. attapulgite, and guar gum (never with cement). Used primarily in combating lost circulation.

cement (or some clays) and diesel oil dispersion that thickens when water is contacted.

clay mineral used in drilling fluid. Like attapulgite, it creates viscosity by mechanical interference with the clay particles rather by electrochemical forces.