Civil Engineering

Drilling requirements vary according to a number of factors, such as direction: vertical or horizontal. The factors affecting drilling include the end use, pressure, depth, soil formation, environment, and temperature, all of which are affected by the quality of the drilling fluid. Bentonite can contribute significantly to achieving successful operating conditions. For both foundation construction and horizontal-directional drilling, rheology and viscosity of the specific drilling fluid must match exactly the changing formation and environment in the drill hole. So our understanding (in house experience) of these two performance parameters can make a critical difference to the success of any foundation or tunneling project.


AMCOL’s global experience can help customers by providing site-specific support developed through project work around the world. To help move project estimations ahead, AMCOL Minerals Asia can provide useful application rates and guides for many different types of construction and HDD projects.


Bentonite continues to be a major component in most water-based drilling mud. Drilling mud should allow cuttings to separate readily at the surface to facilitate fluid recirculation and it should also have a property of gelling to keep the cuttings of suspension when circulation shuts down. Only bentonite provides these advantages for both water and oil drilling. Another critical role bentonite plays is in the stabilization of the bore hole wall. It helps produce the pressure needed from the drilling mud or fluid to prevent the formation from caving in. Called a filter cake, this tough film of mud remains plastered on the wall of the drill hole after the drilling mud has been pumped out. Bentonite has another important role, since drilling fluids are also critical to cooling the drill bit and lubricating the drill strings.

Please visit CETCO website for more information.

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