Impact of Impurities on the Corrosion of CO2 Dense Phase Transmission Pipelines

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A dense phase or supercritical CO2 pipeline is a crucial state in the oil and gas sector, particularly when it comes to enhanced oil recovery (EOR) and carbon capture and storage (CCS)1. The process of CCS involves three stages: capture from sources (e.g., cement factories and power plants), transportation process, and storage. Generally, these pipelines carry CO2 from different industrial facilities to geological formations.

Product Number: MECC23-20236-SG

Author: Mohammed Yousif, Ayman Musaad, Usman Ali, Ali Alhajeri, Faisal M Al-Abbas

Publication Date: 2023

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With the growth of CO2 utilization for enhanced oil recovery (EOR) and the expansion of carbon capture and sequestration projects, there is a greater need for reliable and safe CO2 transportation infrastructure. Impurities present in the dense phase CO2 stream can have a detrimental effect on the corrosion mechanism of the pipeline, leading to catastrophic failure and increased maintenance costs. The current research focused on understanding and quantifying the impact of impurities on the corrosion severity of CO2 dense phase transmission pipelines. This paper shares a review of the impact of different impurities on the corrosion severity in dense phase CO2 environment. The various mechanisms by which impurities can promote corrosion are discussed, including chemical and electrochemical reactions. Furthermore, this work will present future research in this area aimed at improving the understanding and impact of impurities in industrial applications.