This article explains when iron carbonate becomes protective, when it does not, and why integrity assessments frequently overestimate its effectiveness.

This article explains why CO₂ partial pressure is the governing parameter for CO₂ corrosion and how it should be correctly used in integrity and maintenance decision-making.

CO₂ corrosion, often referred to as sweet corrosion, is one of the most common internal corrosion mechanisms affecting carbon steel pipelines in the oil and gas industry. Despite being widely studied and relatively well understood, CO₂ corrosion remains a frequent cause of unexpected pipeline degradation and failures.

The root cause is not a lack of knowledge, but a simplified understanding of how CO₂ actually leads to corrosion under real operating conditions. This article explains the fundamental mechanism of CO₂ corrosion in carbon steel pipelines and why its severity is often underestimated in integrity management.