The objective of this research is to obtain a better understanding of the fundamental physical phenomena influencing downhole corrosion. With a better understanding of these phenomena, the accuracy of corrosion prediction models can be greatly improved. A mechanistic model has been developed to predict the location and rates of corrosion in downhole
systems. In particular, it has been observed that accurate modeling of the mass transfer of the species involved in the corrosion process, both reactants and products, near the pipe wall are critically important to the modeling of the overall corrosion rate. Specifically, this work addresses the laminar liquid region adjacent to the tubing wall, also referred to as the diffusion sublayer, since it provides the majority of the mass transfer resistance. The mass transfer model has been developed and integrated with the necessary phase equilibrium model, electrolyte equilibrium model, hydrodynamic analysis models, and pressure drop models to produce an integrated corrosion simulation program. Keywords: Downhole corrosion, Flow-induced corrosion, CO2 corrosion, Modeling, Corrosion rate prediction, Uniform corrosion