Product Summary

Guideline for the Selection and Use of Corrosion Resistant Alloys in CCS and CCUS Projects

At the request of the PCOR Partnership, the following comprehensive guideline was developed for the selection and use of corrosion resistant alloys (CRAs) in carbon capture and storage (CCS) and carbon capture utilization and storage (CCUS). CCUS is defined as the process of capturing carbon dioxide (CO₂) to be recycled for further usage and differs from CCS in that CCUS is not intended for permanent geological storage of CO₂. Instead, the purpose of CCUS is to convert the captured CO₂ into more valuable substances or products, such as plastics, concrete, or biofuel, but retain the carbon neutrality of the production processes. There are so many possible uses for CO₂ under the CCUS definition such that the downstream processing is beyond the scope of this guideline. However, one pathway for CO₂ in CCUS is enhanced oil recovery (EOR), which will be considered in this guideline. While the selection of a CRA material can be, and often is, based on common practices, each application requires an in-depth review of the complete system in order to determine the best material(s) for the application. The CRA material must withstand the length of time it will be in service to prevent migration of injected fluids out of the wellbore. Considerations include stream composition, reservoir fluids, flowing and static wellbore conditions, wellhead and surface equipment, downhole completion equipment, service life, etc.;