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dc.contributor.authorElenius, Maria
dc.contributor.authorSkurtveit, Elin
dc.contributor.authorYarushina, Viktoriya M.
dc.contributor.authorBaig, Irfan
dc.contributor.authorSundal, Anja
dc.contributor.authorWangen, Magnus
dc.contributor.authorLandschulze, Karin
dc.contributor.authorKaufmann, Roland
dc.contributor.authorChoi, Jung Chan
dc.contributor.authorHellevang, Helge
dc.contributor.authorPodladchikov, Yuri
dc.contributor.authorAavatsmark, Ivar
dc.contributor.authorGasda, Sarah
dc.PublishedElenius M, Skurtveit E, Yarushina VM, Baig I, Sundal A, Wangen M, Landschulze K, Kaufmann R, Choi JC, Hellevang H, Podladchikov Y, Aavatsmark IA, Gasda SE. Assessment of CO2 storage capacity based on sparse data: Skade Formation. International Journal of Greenhouse Gas Control. 2018;79:252-271eng
dc.description.abstractLarge North Sea aquifers of high quality are the likely major target for 12 Gt of European CO2 emissions that should be stored in the subsurface by 2050. This involves an upscaling of the present combined injection rate from all European projects, which requires careful examination of the storage feasibility. Many aquifers are closed or semi-closed, with storage capacity mainly constrained by consideration of caprock failure criteria. Because the induced overpressure can propagate to sensitive regions far from the injector, the risk of caprock failure must be examined in terms of large volumes and for long times. This poses challenges with respect to fluid-flow simulation in the presence of highly uncertain aquifer properties. In this work, experts on geology, geophysics, geomechanics and simulation technique collaborate to optimize the use of existing data in an efficient simulation framework. The workflow is applied to the large North Sea Skade Formation, with potential for secondary storage and pressure dissipation in the overlying Utsira Formation. Injection at three locations in Skade gives an overall practical capacity of 1–6 Gt CO2 injected over a 50-year period, depending on the reservoir permeability and compressibility. The capacity is limited by local pressure buildup around wells for the lowest estimated reservoir permeability, and otherwise by regional pressure buildup in shallow zones far from the injection sites. Local deformation of clay due to viscoelastoplastic effects do not have an impact on leakage from the aquifer, but these effects may modify the properties of clay layers within the aquifer, which reduces the risk of lateral compartmentalization. Uplift of the seafloor does not impose constraints on the capacity beyond those set by pressure buildup.en_US
dc.rightsAttribution CC BYeng
dc.subjectGeological CO2 storageeng
dc.subjectDynamic capacity estimationeng
dc.subjectSkade Formationeng
dc.subjectUtsira Formationeng
dc.subjectGeological characterizationeng
dc.subjectBasin-scale simulationeng
dc.subjectNorwegian continental shelfeng
dc.titleAssessment of CO2 storage capacity based on sparse data: Skade Formationen_US
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderCopyright 2018 The Authorsen_US
dc.source.journalInternational Journal of Greenhouse Gas Control
dc.relation.projectNorges forskningsråd: 193825

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