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By adding a small amount of corrosion inhibitor to the medium, various protective films such as passivation films, adsorption films, and precipitation films are formed on the inner walls of the pipelines, thereby preventing or slowing down corrosion. The amount of corrosion inhibitor used during operation is extremely small, and it does not alter environmental factors ； Adding a corrosion inhibitor requires no additional equipment, is simple and easy to operate, and offers the advantage of being applicable in different environments with the same formula. Therefore, it is widely used in the oil and gas industry. Currently, the main corrosion-inhibiting components of corrosion inhibitors used for internal anti-corrosion in oil and gas transmission pipelines at home and abroad are organic substances, such as chain-shaped organic amines and their derivatives, imidazolines and their salts, quaternary ammonium salts, alkyne alcohols, etc. From an electrochemical perspective, corrosion inhibitors can be classified into anodic corrosion inhibitors, cathodic corrosion inhibitors, and mixed-type corrosion inhibitors. In different corrosion environments, different corrosion inhibition techniques are employed. Neville et al. used the weight-loss method and electrochemical methods, along with two commercial corrosion inhibitors, to study the corrosion inhibition performance of carbon steel against turbulent corrosion in CO2-saturated liquid-solid biphasic fluids. The results showed that both corrosion inhibitors exhibited good corrosion inhibition effects and formed an adsorption film on the surface of carbon steel. Zhao et al. used the weight-loss method and electrochemical polarization techniques to study the inhibition mechanism of imidazolinone derivatives on the corrosion of carbon steel in H2S aqueous solutions. DharmaAbayaratha et al. used an autoclave to study the corrosion behavior of carbon steel in corrosive solutions containing CO2, H2S, and S elements under simulated oil and gas field conditions. Through these experiments, water-soluble corrosion inhibitors were identified that can effectively suppress corrosion caused by the coexistence of CO2, H2S, and S.