CR-650 15kg

CR-650 15kg is a high molecular weight, powdered polymer which has been developed to improve core recovery, particularly in broken and sandy formations. It may also be used to stabilise reactive clays and shales and to provide lubrication when diamond drilling in poor conditions.

CR-650 forms a protective polymer film on the drill core and on the walls of the bore hole. This polymer film reduces water invasion into hydratable and dispersive clays and shales. CR-650 is also very effective for stabilising loose, friable sand formations. CR-650 can be used as a single product, low solids mud system, or it can be combined with AUS-GEL / AUS-TROL to form a complete mud system.



kg per 1000 litres

Add to fresh water under normal

0.5 - 0.75

drilling conditions


To stabilise swelling clays and shales

0.75 - 1,0

To improve core recovery in sandy,


friable formations and to increase


hole stability


CR-650 should be mixed by adding slowly through a jet tunnel or high speed stirrer.