Print Email Facebook Twitter De-risking European CCS operations with the most complete earthquake catalogue for the North Sea Title De-risking European CCS operations with the most complete earthquake catalogue for the North Sea Author Kettlety, T. (University of Oxford) Martuganova, E.M. (TU Delft Applied Geophysics and Petrophysics) Kühn, D. (Norsar) Schweitzer, J. (Norsar) Weemstra, C. (TU Delft Applied Geophysics and Petrophysics) Baptie, B. (British Geological Survey) Dahl-Jensen, T. (Geological Survey of Denmark and Greenland) Kendall, J.M. (University of Oxford) Date 2023 Abstract With the development of several CO₂ storage operations in the North Sea, there is a clear need to better characterise the seismic hazard and stress state in the region. Faults and associated fracture sets can act as hydraulic pathways for unintended CO₂ migration, ill-defined stress states can lead to numerous operational difficulties, and induced seismicity will be a clear risk as CO₂ is injected into subsurface reservoirs. Seismicity can reveal the location and extent of faults and fractures, and can be used to invert for the state of stress. Both operators and regulators therefore need a clear understanding of the rate of natural seismicity, to identify and distinguish induced events from natural, and to assess the likelihood of induced fault reactivation. This requires a dedicated, site specific background monitoring programme, as well as a high-quality seismic catalogue for the region around any CO₂ storage operation. Our study has produced the first dedicated seismic catalogue of the North Sea, based on all available data from each of the relevant seismological agencies. This dataset fosters further studies into seismic hazard, leakage risk, and stress state in a region that will be vital for European CO₂ storage efforts in the coming decades. To reference this document use: http://resolver.tudelft.nl/uuid:48c78726-b278-4206-8b72-7a6b92954e7e DOI https://doi.org/10.3997/2214-4609.202310508 Event 84th EAGE ANNUAL Conference and Exhibition 2023, 2023-06-05 → 2023-06-08, Vienna, Austria Part of collection Institutional Repository Document type conference paper Rights © 2023 T. Kettlety, E.M. Martuganova, D. Kühn, J. Schweitzer, C. Weemstra, B. Baptie, T. Dahl-Jensen, J.M. Kendall Files PDF 508.pdf 1.69 MB Close viewer /islandora/object/uuid:48c78726-b278-4206-8b72-7a6b92954e7e/datastream/OBJ/view