Browsing Bergen Open Research Archive by Author "Gasda, Sarah Eileen"
Now showing items 1-8 of 8
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Effective permeability of deformation bands in fault damage zones – Can deformation bands reduce the risk of fault leakage?
Berge, Runar Lie; Gasda, Sarah Eileen; Keilegavlen, Eirik; Sandve, Tor Harald (SINTEF Proceedings;7, Chapter, 2021)Faults are major geological structures that can dominate the flow paths in subsurface reservoirs by, e.g., connecting otherwise unconnected layers. In CO2 storage sites where the faults act as the main structural trap, the ... -
A Finite-Volume-Based Module for Unsaturated Poroelasticity
Varela, Jhabriel; Gasda, Sarah Eileen; Keilegavlen, Eirik; Nordbotten, Jan Martin (Chapter, 2021)In this chapter, we present fv-unsat, a multipoint finite-volume–based solver for unsaturated flow in deformable and nondeformable porous media. The latter is described using the mixed form of Richards’ equation, whereas ... -
The impact of local-scale processes on large-scale CO2 migration and immobilization
Gasda, Sarah Eileen; Nordbotten, Jan Martin; Celia, Michael A. (Peer reviewed; Journal article, 2011)Storage security of injected carbon dioxide (CO2) is an essential component of risk management for geological carbon sequestration operations. During the injection and early post-injection periods, CO2 leakage may occur ... -
International Conference on Greenhouse Gas Technologies (GHGT-12) Models for CO2 injection with coupled thermal proce
Kometa, Bawfeh Kingsley; Gasda, Sarah Eileen; Aavatsmark, Ivar (Peer reviewed; Journal article, 2014)Large-scale models of carbon dioxide (CO2) storage in geological formations must capture the relevant physical, chemical and thermodynamic processes that affect the migration and ultimate fate of injected CO2. These processes ... -
Models for CO2 injection with coupled thermal processes
Kometa, Bawfeh Kingsley; Gasda, Sarah Eileen; Aavatsmark, Ivar (Peer reviewed; Journal article, 2014)Large-scale models of carbon dioxide (CO2) storage in geological formations must capture the relevant physical, chemical and thermodynamic processes that affect the migration and ultimate fate of injected CO2. These processes ... -
Upscaled modeling of CO2 injection and migration with coupled thermal processes
Gasda, Sarah Eileen; Stephansen, Annette; Aavatsmark, Ivar; Dahle, Helge K. (Peer reviewed; Journal article, 2013)A practical modeling approach for CO2 storage over relatively large length and time scales is the vertical-equilibrium model, which solves partially integrated conservation equations for flow in two lateral dimensions. We ... -
Vertical Equilibrium Flow Models with Fully Coupled Geomechanics for CO2 Storage Modeling, Using Precomputed Mechanical Response Functions
Andersen, Odd; Nilsen, Halvor Møll; Gasda, Sarah Eileen (Peer reviewed; Journal article, 2017)Vertical equilibrium (VE) models have proved to be attractive for simulation of \co storage scenarios. Their primary advantage is a substantial reduction in computational requirements compared to standard 3D simulation ... -
Vertically averaged equations with variable density for CO2 flow in porous media
Andersen, Odd; Gasda, Sarah Eileen; Nilsen, Halvor Møll (Peer reviewed; Journal article, 2015-03)Carbon capture and storage has been proposed as a viable option to reduce CO 2 emissions. Geological storage of CO 2 where the gas is injected into geological formations for practically indefinite storage, is an integral ...