Evaluation Study on Corrosion Inhibitor and Tube/Rod Material Compatibility in CO2 Injection-Production Wells

Huifang Song; Jingjing Qi; Kai Jin; Wei Huang; Yingbiao Xu; Tingyi Wang

doi:10.54097/91gjq045

Authors

Huifang Song
Jingjing Qi
Kai Jin
Wei Huang
Yingbiao Xu
Tingyi Wang

DOI:

https://doi.org/10.54097/91gjq045

Keywords:

CCUS; Corrosion inhibitor; Tube/rod material; Corrosion resistance.

Abstract

This paper evaluates the corrosion resistance performance of different corrosion inhibitors and tube/rod materials in the injection-production well environment of Carbon Capture, Utilization and Storage (CCUS) projects. Through laboratory corrosion tests, the inhibition effects of various corrosion inhibitors and their adaptability under different working conditions were analyzed. Results show that under extreme corrosive environments, conventional corrosion inhibitors have deficiencies in protecting standard tube/rod materials. The corrosion rates of conventional tube/rod materials are generally high and comparable. As temperature and CO₂ content (partial pressure) increase, there is a trend of increasing corrosion rates. Different materials show significant variations in corrosion resistance performance in CO₂-containing media. This paper provides scientific basis for the selection of corrosion inhibitors and tubing materials in CCUS projects.

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