Drilling Industry Glossary

Calcium Chloride Weight

CaCl₂ wt.(%) = (weight of CaCl₂)/(weight of mud) . CaCl₂ (mg/L) is the amount of CaCl₂ in mg per liter of mud. CaCl₂ brine is a crucial additive in oil and synthetic based mud because of its improvement of wellbore stability in water-sensitive shale zones.