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Many depleted oil and gas reservoirs are targets for commercial CO 2 enhanced oil recovery, resulting in associated CO 2 storage which occurs as part of the process. These oil fields have legacy wellbores that may contain a leakage pathway. Corrosion or degradation can occur anywhere along the wellbore through or along the cement, casing, tubing, or plugs and is a challenging issue facing the oil and gas industry. Two case studies presented here are legacy wells in the Weyburn oil field with substantially different CO 2 injection rates. These case studies aim to help understand casing corrosion in CO 2 -rich environments.

Corrosion and Failure Assessment for CO2 EOR and Associated Storage in the Weyburn Field