Corrosion Assessment in a Kuwaiti High-Pressure Gas Pipeline Using WG-ICDA: A Case Study on Rate Prediction, Wall Loss, and Inhibitor Performance

Abstract This paper presents key insights and outcomes from the application of the Wet Gas Internal Corrosion Direct Assessment (WG-ICDA) Methodology for Pipelines, as outlined in NACE SP0110-2024, to a high-pressure gas pipeline in Kuwait. The assessment was conducted under challenging conditions, including limited availability of critical operational data such as temperature, pressure, and gas flow rates. The study details the strategies employed to address these data limitations and to manage the complexities of applying generalized assumptions across extended operational periods. It also explores the broader challenges of implementing the ICDA approach on pipelines with multiple time-periods, multiple pipeline ICDA regions and have experienced corrosion inhibitor injected without clarity on its effectiveness. This also considers pipeline section replacements due to massive corrosion. Drawing from the execution of all four steps of the WG-ICDA process previously conducted, the paper proposes practical strategies to mitigate these challenges. Ultimately, the study underscores the value of WG-ICDA as a robust integrity assessment tool capable of identifying internal corrosion root causes and informing targeted monitoring and mitigation measures.