The use of stable isotope measurements for monitoring and verification of CO2 storage

Johnson, Gareth and Raistrick, Mark and Mayer, Bernhard and Shevalier, Maurice and Taylor, Steve and Nightingale, Michael and Hutcheon, Ian (2009) The use of stable isotope measurements for monitoring and verification of CO2 storage. Energy Procedia, 1 (1). pp. 2315-2322. ISSN 1876-6102 (https://doi.org/10.1016/j.egypro.2009.01.301)

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Abstract

Stable isotope data can assist in successful monitoring of the fate of injected CO2 in enhanced oil recovery and geological storage projects. This is demonstrated for the International Energy Agency Greenhouse Gas Weyburn-Midale CO2 Monitoring and Storage Project (Saskatchewan) and the Pembina Cardium CO2 Monitoring Project (Alberta) where fluid and gas samples from multiple wells were collected and analyzed for geochemical and isotopic compositions. In both projects, C and O isotope values of injected CO2 were sufficiently distinct from those of background CO2 in the reservoir. Consequently C and O isotope ratios constitute a suitable ‘fingerprint’ for tracing the fate of injected CO2 in the respective reservoirs.

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