Geomechanical Consequences of Large-scale Fluid Storage in the Utsira Formation in the North Sea. (November 2016)

• Record Type: Journal Article
• Authors: Wangen, Magnus; Gasda, Sarah; Bjørnarå, Tore
• Is Part Of: Energy procedia. Volume 97(2016)
• Page Start: 486
• Page End: 493
• Publication Date: 2016-11
• Subjects: Geomechanics -- CO2 storage site evaluation -- seabed uplift; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2016.10.056
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: In this work we look at the geomechanical implications of injecting large volumes of fluid in the Utsira Formation. Our modelling is based on Biot's poroelasticity in combination with one-phase fluid flow. We study four different injection scenarios over 25 year: 1 Mt/year, 10 Mt/year, 100 Mt/year and 1000 Mt/year. We observe that the pore fluid pressure scales with the injection rate. The strain of the Utsira Formation and the related surface uplift can be estimated with simple a 1D model. A particular uncertainty with the modelling is the mechanical properties of the Utsira sand and the cap rock.