Bentonite plugs are used for sealing boreholes, in order to prevent that water from different aquifers mix after augering. The plugs are available in various diameters.
The plugs can be used against intrusive seepage water and for decommissioning old monitoring wells and extraction wells.
The material used and the plugs’ shape ensure a reliable hydrological sealing. The plugs consists of natural bentonite clay, without parts that could cause obstructions. After application of the bentonite plug an auger hole with a diameter of 70 mm can be entirely closed off in about three days.
The bentonite plugs are available in several variations, all measuring 50 cm in length.
10.94 Bentonite plugs 34 mm diameter. Seals boreholes up to 70 mm in diameter. Pack of 20 pieces
10.95 Bentonite plugs 34 mm diameter. Pallet with 80 packs of 20 pieces
10.92.01 Bentonite plugs 48 mm diameter. Seals boreholes up to 110 mm in diameter. Pack of 8 pieces
10.92 Bentonite plugs 48 mm diameter. Pallet with 100 packs of 8 pieces
Round bentonite plugs are very suitable for decommissioning old monitoring wells and extraction wells.
10.91 Bentonite plugs 17 mm diameter. Seals boreholes up to 30 mm diameter in approx. 48 hours. Pack of 40 pieces
10.93 Bentonite plugs 25 mm diameter. Seals boreholes up to 45 mm diameter in approx. 48 hours. Pack of 30 pieces
Note: Bentonite swells poorly in water with salinity, or electrical conductivity, of 20 mS/cm or higher. Water that is heavily polluted also inhibits the function of bentonite. Not suitable for use in pure hydrocarbon layers, as bentonite will not swell at all in that environment.