Bentonite is used as a mud constituent for oil and water well drilling in civil engineering. Its main role in drilling is mainly to seal the borehole walls, to remove drill cuttings. It also lubricates and cools the cutting tools while protecting against corrosion.
As the drilling fluid generates hydrostatic pressure in the borehole, it hinders fluid and gas penetration. The drilling liquid conveys the drill cuttings to the surface. When the purge pumps have idle periods, the thixotrophy of the bentonite hinders the stone material from dropping back into the drilled shaft.
The bentonite grade that we specifically recommend for drilling applications, with its high viscosity, high gel-forming and low filtration properties, gives an outstanding performance in drilling mud even in challenging formations, deep drillings and hot water drillings.