... water-soluble gel for drilling fluids, and can form artesian well liquor. 1 CMC has good water-loss controlling ability, especially ... water, which is specially suitable for sea misering and deep well. Tech Grade CMC-LVAppearanceCreamy color, free-flowing powderPurity70% min.D. ... stabilize soft soil structure, prevent collapse of wall of a well.5, can improve mud-making volum, reduce filteration loss.6 ...