1887

Abstract

Summary

The oil and gas industry has over 50 years of experience in continuously developing CO2 transport and injection for advanced oil recovery (EOR). These efforts have highlighted the need for infrastructure adjustments and concerns regarding maintaining the integrity of the well and the entire operation. The technology and requirements for well barrier elements are similar for both permanent CO2 storage and the reuse of O&G production facilities for CO2 injection. This means that specific equipment and infrastructure investments are necessary, including gas treatment facilities, pipelines, compression equipment for transport, distribution lines, and conversion wells for CO2 injection. The focus of this study is on the latter. This study conducts a systematic literature review to identify the key factors in assessing wells for CO2 injection. The outcome is a flowchart for evaluating active and suspended wells. This flowchart encompasses the qualitative and initial analysis of crucial factors in well assessment, such as cement integrity, corrosion, CO2 flow composition, and material compatibility. If the suggested actions cannot rectify the issues with the well, it should be plugged and abandoned. The findings indicate significant potential for the study, including assessing abandoned wells and converting actives and/or suspended wells into monitoring wells.

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2025-10-27
2026-01-15

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Repurposing O&G Wells for CO2 Storage: Key Aspects for Safety
Conference Proceedings 2025, 1 (2025); https://doi.org/10.3997/2214-4609.202521086
/content/papers/10.3997/2214-4609.202521086
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