METHOD OF PREPARING AQUEOUS DRILLING MUDS BASED ON CLAYS NON- AGGRESSIVE TO CLAYEY BEDS, AND TREATED CLAY

摘要

FIELD: drilling fluids. SUBSTANCE: method consists in dispersing clay in aqueous solution containing needed amount of dispersing agent to liquefy drilling mud. Clay is then separated from aqueous solution containing non-adsorbed dispersing agent and thus treated clay is finally dispersed in water. EFFECT: improved procedure. 6 cl, 4 tbl