Could CO2 storage site performance be compromised by palaeo-gas migration conduits in the overburden?

G. D. Nicoll, M. Naylor, A. J. Cavanagh, S. Geiger, R. S. Haszeldine

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Formations below the North Sea are proposed as a major repository for anthropogenic C02 to mitigate climate change. Two such sites are already operational offshore Norway. Large areas of the North Sea are known to have leaked natural gas over geological time, so are these areas suitable for C02 storage, given that geological heterogeneities and natural gas palaeo-migration pathways could serve to compromise C02 storage sites in the longer term? We have identified similar features at the Utsira C02 storage site offshore Norway, thus we use this site as a case study to investigate whether C02 leakage is possible and if so under what conditions. We evaluate the main uncertainties affecting this storage site and present a risking methodology and screening tool that could be used to assess future storage sites and minimise the risk of compromise due to inappropriate site location.

Original languageEnglish
Title of host publication72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010
PublisherSociety of Petroleum Engineers
Pages5482-5483
Number of pages2
ISBN (Print)9781617386671
Publication statusPublished - 2010

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geology
  • Geophysics
  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Nicoll, G. D., Naylor, M., Cavanagh, A. J., Geiger, S., & Haszeldine, R. S. (2010). Could CO2 storage site performance be compromised by palaeo-gas migration conduits in the overburden? In 72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010 (pp. 5482-5483). Society of Petroleum Engineers.