CORROSION BEHAVIOR OF MILD CARBON STEEL IN WASTE DRILLING FULIDS
碳钢在废弃钻井液中的腐蚀行为研究

The corrosion behavior of mild carbon steel A3 in waste drilling fluids was studied by means of weight loss and electrochemical measurements, SEM and AES analysis. The experiment results showed that destabilized fluids, which were treated by adding chemical substance such as inorganic acids and salts or coaguations into waste drilling fluids, had stronger corrosiveness. The corrosion rate of mild steel in this fluids depended on the pH values, oxygen content, concentration of the inorganic salts and so on. It was also found that adding oxygen removal agents and corrosion inhibitors into the fluids could reduce the corrosion rate of A3 steel.