IX. INHIBITOR EFFECTIVENESS ON CO2 CORROSION WITH SAND Introduction Erosion, corrosion, and erosion-corrosion are common problems in offshore

Erosion, corrosion, and erosion-corrosion are common problems in offshore pipelines, tubing and pipe fittings. Corrosion has an important impact on the total cost of oil and gas production. Considering the diversity of corrosion related problems, CO2 corrosion (sweet corrosion) is probably the material degradation mechanism most extensively assessed in this industry over the last 30 years. In the last decade, predictive models have experienced a major improvement in accuracy as well as in the development of mechanistic models of the chemistry involved in the CO2 corrosion process. Several empirical laboratory models, empirical field models and mechanistic models have been developed in this area and many parameters have been taken into account, including the effects of CO2 pressure, temperature, pH, chloride content, hydrodynamics and others. However, applicability of these models when sand is produced is still not clear.