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Bentonite for Drilling Fluids

Bentonite mainly used with water-based mud (WBM) to provide significant functions such as increasing the viscosity and filtration control. Bentonite interacts chemically with the water and swells as it absorbs the water as a result.

Bentonite as clays are naturally absorbent, and when the bentonite is exposed to water, bentonite attracts the positively charged surfaces in water to its negative face by electrostatic attraction forces.

Bentonite is mixed with water to form a slurry that is pumped through the drill string and out through the drill bit. The drilling mud helps to cool and lubricate the drill bit, and due to its high viscosity and yield strength, it extracts drill cuttings, carrying them to the surface, and helps to seal the drill hole and to prevent wall cave-ins.



  • Have low sand content thus reducing wear on drilling equipment.
  • Possesses optimal viscoplastic and filtration characteristics.
  • Provides effective borehole cleanout.
  • If you have any additional questions, please send a request.

If you have any additional questions, please send a request




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