Description  HOLEPLUG® naturally occurring Wyoming sodium bentonite clay is a sized and graded chip material used to seal and plug earthen boreholes.  HOLEPLUG bentonite is available in two particle size grades:  HOLEPLUG® 3/4″ bentonite (100% of particles pass through 3/4″ screen; all particles retained on 3/8″ screen)  HOLEPLUG® 3/8″ bentonite (100% of particles pass through 3/8″ screen; all particles retained on 1/4″ screen)
Applications/Functions  The use of HOLEPLUG sodium bentonite assists or promotes the following:
 Grouting annulus in all types of wells, particularly environmental monitoring well applications  Sealing above gravel packs  Plugging decommissioned boreholes  Stemming shot holes  Sealing around conductor pipe  Sealing lost circulation zones  Shutting off artesian flow
Advantages   Helps prevent entry of surface water into boreholes  High swelling potential  In situ swelling to provide a superior seal with excellent casing stabilization  Easier to apply than pellets  Cost effective  Simple to apply, mixing not required  Helps prevent vertical movement of fluids in the hole between porous zones  Helps form a permanent, flexible downhole seal  Helps allow hole re-entry  Rehydratable   NSF/ANSI Standard 60 certified
Typical Properties  Volume of  50-lb (22.7 kg) sack
HOLEPLUG 3/4″ bentonite 0.73 ft3 or 0.027 yd3 or 0.021 m3

HOLEPLUG 3/8″ bentonite 0.70 ft3 or 0.026 yd3 or 0.020 m3 Permeability 1.5 x 10-9 cm/sec (in fresh water) Appearance Beige to tan chips