
Mixing Bentonite Drilling Fluid Clean Water: A Layman's ...
For these reasons, many drillers recommend first mixing bentonite in a large trash can (114 liter or 30 gallon capacity) or in a 55gallon (208 liter) drum or barrel. Very slowly add a half sack of bentonite to the water and circulate it with the mud pump. This results in very thorough mixing with no lumps.