8. (15 points) : A 24-inch subsea pipeline ( 10KM in length) is designed to receive 25MBD (thousand barrels per day) crude oil at 230 degree F and 300 psig. The crude contains 1.15mol% of CO2 and negligible amount of H2S. It has a gas-to-oil ratio of 700scf/stb (standard cubic foot to standard barrel) and is expected to be produced at 10% water cut. Hydraulic analysis indicates that there will not be any water accumulation along the pipeline, but the pipeline is expected to be water wetted. The design team needs to evaluate the following for carbon steel as the base case before considering the additional corrosion control measures for a design life of 25 years. I. What are the potential damage mechanisms which the pipeline will be subject to? II. What would be the most severe uniform corrosion rate expected in this case? III. Taking credit of the protective scale, what is the expected corrosion rate? Hint: log(Vcor)=5.81710r+0.67log(pCO,1 bar =14.5 Psig )