Macro-Galvanic Corrosion and Failure Evaluation of Shale Gas Pipeline Welds in CO2 Environment

Key Points

• Failure evaluation reveals significant corrosion effects on pipeline welds.
• Key evidence indicates macro-galvanic corrosion leads to accelerated weld degradation in CO2 conditions.
• Assessment using corrosion mechanics enables a better understanding of weld integrity and failure modes.
• Understanding this corrosion process calls for enhanced protective measures in pipeline design to prevent failures.