SALTS AND BRINES Calcium Chloride Prills Calcium chloride prills are small, solid pellets of calcium chloride (CaCl₂) with very low water content, valued for being highly soluble. Get In Touch areas of application Used in drilling, workover and completion brines to control density and shale stability for both onshore and offshore wells. Helps control rheology in drilling muds and performs reliably at high temperature and pressure conditions. Concrete accelerator: Added to concrete to speed setting and early strength, especially in cold weather. Other Fields