The aim of the present paper is to describe an application developed to address the selection of
materials to be used as tubing and casing in oil and gas field production facilities, based on corrosion
performance. The first step is the prediction of the flow pattern and its characteristics, using a numerical
model developed in house. These results are used as input to predict the corrosion rate of carbon and
low alloy steels in CO2 rich environments. Additionally, the carbon and low alloy steel selection from
the sour resistance point of view is carried out by following NACE MR0175/ISO 15156 part 2. The
behavior of different CRAs is estimated through working windows information.