Session: Advances in Materials for Oil and Gas Production (Part II of III)
Assessment of Safe Operating Conditions for Corrosion-Resistant Alloys in Water Injection Systems (C2026-00274)
Tuesday, March 17, 2026
9:00 AM - 9:30 AM Central
Location: 362 DE
Earn .5 PDH
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Charles Leballeur, Julien Pellé, Roy Johnsen, Nicolas Larché, Erwan Diler, Jarand Narland
Throughout the different phases of a water injection system's lifecycle, corrosion resistant alloys (CRAs) constituting the system may be exposed to a range of corrosive media—including natural or treated seawater, produced water, or mixtures of produced water and monoethylene glycol (MEG)—depending on the service conditions. The risk of localized corrosion in these systems is significantly influenced by the fluid composition and its physico-chemical parameters. Key factors include chloride concentration, temperature, the presence of natural biofilms (in seawater), dissolved oxygen content, pH, and residual chlorination. To mitigate the risk of localized corrosion, an extensive testing program was developed. This program involved immersion tests designed to simulate operating conditions. The primary objective was to define safe operating windows for various alloys (e.g., UNS S42000, S41427, S31603, N07718, N08825, N06625, S32205, S32750) under different exposure scenarios. The test campaign specifically focused on the impact of oxygen ingress during upset conditions, with and without residual chlorine. The results provide valuable insights into material performance and help guide the selection and operation of CRAs in water injection systems. The impact of the gasket materials was also investigated.
