Carbon dioxide corrosion models, including empirical, semi-empirical, and mechanistic
ones, have been developed to predict corrosion of carbon steel for the past several decades.
Although the mechanisms of carbon dioxide corrosion are well understood through laboratory
investigations, it is still challenging to apply corrosion models to predict corrosion in actual oil
and gas fields. This paper will discuss the applications of corrosion models in oil and gas
production, which include calculating corrosion allowance and making prediction of facilities life
in the design phase, providing guidance in corrosion management in the production phase,
understanding the results obtained from in-line pipeline inspection tools, determining
inspection frequency, and serving as a tool for improvement, trouble-shooting, and failure
analysis.
Keywords: corrosion model, CO2 corrosion, scale, inspection, carbon steel