DRILLING MUD CHEMICAL CONTAMINATION WITH CO2 CAUSES, EFFECTS, TESTING AND TREATMENT
Mud Contamination By CO2
Introduction To Mud Contamination By CO2
Carbon dioxide (CO2) is a common constituent of natural gases and is present in most types of formation fluids. Carbon dioxide dissolves in water, forming carbonic acid that lowers the pH. This lowers the alkalinity of water based muds changing hydroxyl ions (OH-) to bicarbonates (HCO3-) and carbonates (CO3-2) ions. Carbonates can be introduced into Water Based Mud from:

- Carbon dioxide from drilled gases and formations.
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