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This document provides information about carbon dioxide (CO2) contamination in water-based drilling fluids. CO2 dissolves in water to form carbonic acid, lowering pH and alkalinity. Sources of CO2 contamination include drilled gases/formations, drilling mud products, and overtreatment. Symptoms include increased gel strength and viscosity. Preventing CO2 contamination involves increasing mud weight if an influx occurs and pretreating with BARACOR 95 inhibitor. CO2 is removed through treatment with lime or c

Author

apsekar

Language

EN