Progress in Prediction of CO₂ Corrosion Rate Affected by Oil in Gathering Pipelines

Under special conditions,oils in corrosion environment have some inhibitive effect on CO2 corrosion behavior of gathering pipelines.Whether or not the oil wetting and corrosion product film are considered becomes a great difference in existing rate prediction models of sweet corrosion.The progress of CO2 corrosion rate prediction models including empirical model,semi-empirical model,mechanistic model and artificial neural network model considering the effects of oil in recent years is introduced in detail,the present problems and further research directions are also discussed.