Eirik Keilegavlen studerte anvendt og beregningsorientert matematikk ved Universitetet i Bergen (UiB), hvor han disputerte for doktorgraden i 2010. Siden 2012 har han vært fast forsker i forskningsgruppen for Porøse medier ved Matematisk institutt ved UiB. I 2013–14 var han gjesteforsker ved Princeton University.

Keilegavlens forsker på  matematisk modellering og numeriske metoder for koblede prosesser i undergrunnen, motivert av anvendelser som geotermisk energi og lagring av karbon i undergrunnen. Mye av arbeidet dreier seg om diskretiseringsmetoder og løsere for lineære og ikke-lineære problemer, med særlig vekt på simuleringer av porøse medier med sprekker. Han kombinerer dette matematiske fokuset med en interesse for å anvende avanserte simuleringsmetoder i andre fagområder, og deltar jevnlig i tverrfaglige prosjekter i samarbeid med geologer, seismologer og geokjemikere.

En sentral del av Keilegavlens arbeid er utvikling av åpen programvare for vitenskapelige beregninger. Han er grunnlegger og hovedansvarlig for utviklingen av det åpne simuleringsverktøyet PorePy, tilpasset koblede prosesser i sprukne porøse medier, og han har vært hovedutvikler siden. PorePy har vært mye brukt i forskning ved UiB og er også tatt i bruk av flere forskningsgrupper internasjonalt.

I tillegg til å lede PorePy-utviklergruppen har Keilegavlen lang erfaring som prosjektleder. Han er og en erfaren veileder, deriblant for totalt 16 doktorgradsstudenter – 5 av dem som hovedveileder – og 4 postdoktorer, hvorav to som hovedveileder. Gjennom sitt arbeid med PorePy er han sterkt engasjert i å gi studenter erfaring med utvikling av vitenskapelig programvare og bruk av verktøy med åpen kildekode.

Vitenskapelig artikkel

• Jan Ole Skogestad; Eirik Keilegavlen; Jan Martin Nordbotten (2013). Domain decomposition strategies for nonlinear flow problems in porous media. (ekstern lenke)
• Shin Irgens Banshoya; Inga Berre; Eirik Keilegavlen (2024). A discrete fracture matrix framework for simulating single-phase flow and non-isothermal reactive transport. (ekstern lenke)
• Juan Michael Uy Villanueva Sargado; Eirik Keilegavlen; Inga Berre et al. (2021). A combined finite element–finite volume framework for phase-field fracture. (ekstern lenke)
• Ivar Stefansson; Jhabriel Varela; Eirik Keilegavlen et al. (2024). Flexible and rigorous numerical modelling of multiphysics processes in fractured porous media using PorePy. (ekstern lenke)
• Inga Berre; Wietse Boon; Bernd Flemisch et al. (2021). Verification benchmarks for single-phase flow in three-dimensional fractured porous media. (ekstern lenke)
• Xiaozhe Hu; Eirik Keilegavlen; Jan Martin Nordbotten (2023). Effective Preconditioners for Mixed-Dimensional Scalar Elliptic Problems. (ekstern lenke)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen et al. (2019). Finite volume discretization for poroelastic media with fractures modeled by contact mechanics. (ekstern lenke)
• Eren Ucar; Eirik Keilegavlen; Inga Berre et al. (2018). A finite-volume discretization for deformation of fractured media. (ekstern lenke)
• Ivar Stefansson; Eirik Keilegavlen; Sæunn Halldorsdottir et al. (2021). Numerical Modelling of Convection-Driven Cooling, Deformation and Fracturing of Thermo-Poroelastic Media. (ekstern lenke)
• Eirik Keilegavlen; Runar Lie Berge; Alessio Fumagalli et al. (2021). PorePy: an open-source software for simulation of multiphysics processes in fractured porous media. (ekstern lenke)
• Bo Guo; Karl W. Bandilla; Jan Martin Nordbotten et al. (2016). A multiscale multilayer vertically integrated model with vertical dynamics for CO2 sequestration in layered geological formations. (ekstern lenke)
• Inga Berre; Florian Doster; Eirik Keilegavlen (2018). Flow in Fractured Porous Media: A Review of Conceptual Models and Discretization Approaches. (ekstern lenke)
• Eirik Keilegavlen; Jan Martin Nordbotten (2015). Inexact linear solvers for control volume discretizations in porous media. (ekstern lenke)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen (2019). Reactivation of fractures in subsurface reservoirs - A numerical approach using a static-dynamic friction model. (ekstern lenke)
• Trung Hau Dang; Eirik Keilegavlen; Inga Berre (2024). Modelling of mixed-mechanism stimulation for the enhancement of geothermal reservoirs. (ekstern lenke)
• Jakub Wiktor Both; Bergit Brattekås; Eirik Keilegavlen et al. (2024). High-fidelity experimental model verification for flow in fractured porous media. (ekstern lenke)
• Jhabriel Varela; Elyes Ahmed; Eirik Keilegavlen et al. (2022). A posteriori error estimates for hierarchical mixed-dimensional elliptic equations. (ekstern lenke)
• Tor Harald Sandve; Eirik Keilegavlen; Jan Martin Nordbotten (2014). Physics-based preconditioners for flow in fractured porous media. (ekstern lenke)
• Atle Rotevatn; Tor Harald Sandve; Eirik Keilegavlen et al. (2013). Deformation bands and their impact on fluid flow in sandstone reservoirs: the role of natural thickness variations. (ekstern lenke)
• Alessio Fumagalli; Eirik Keilegavlen; Stefano Scialo (2019). Conforming, non-conforming and non-matching discretization couplings in discrete fracture network simulations. (ekstern lenke)
• Hau Trung Dang; Eirik Keilegavlen; Inga Berre (2020). Numerical modeling of wing crack propagation accounting for fracture contact mechanics. (ekstern lenke)
• Veljko Lipovac; Omar Yesid Duran Triana; Eirik Keilegavlen et al. (2024). Unified flash calculations with isenthalpic and isochoric constraints. (ekstern lenke)
• Andreas Sandvin; Eirik Keilegavlen; Jan Martin Nordbotten (2013). Auxiliary variables for 3D multiscale simulations in heterogeneous porous media. (ekstern lenke)
• Eren Ucar; Inga Berre; Eirik Keilegavlen (2018). Three-Dimensional Numerical Modeling of Shear Stimulation of Fractured Reservoirs. (ekstern lenke)
• Alessio Fumagalli; Eirik Keilegavlen; Stefano Scialo (2018). Input and benchmarking data for flow simulations in discrete fracture networks. (ekstern lenke)
• Sergey Alyaev; Eirik Keilegavlen; Jan Martin Nordbotten et al. (2017). Fractal structures in freezing brine. (ekstern lenke)
• Runar Lie Berge; Sarah Eileen Gasda; Eirik Keilegavlen et al. (2022). Impact of deformation bands on fault-related fluid flow in field-scale simulations. (ekstern lenke)
• Jhabriel Varela; Eirik Keilegavlen; Jan Martin Nordbotten et al. (2024). A model for saturated–unsaturated flow with fractures acting as capillary barriers. (ekstern lenke)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen et al. (2024). Numerical Simulations of Viscous Fingering in Fractured Porous Media. (ekstern lenke)
• Sergey Alyaev; Eirik Keilegavlen; Jan Martin Nordbotten (2018). A heterogeneous multiscale MPFA method for single-phase flows in porous media with inertial effects. (ekstern lenke)
• Sissel Mundal; Eirik Keilegavlen; Ivar Aavatsmark (2010). Simulation of anisotropic heterogeneous near-well flow using MPFA methods on flexible grids. (ekstern lenke)
• Michele Starnoni; Inga Berre; Eirik Keilegavlen et al. (2019). Consistent MPFA Discretization for Flow in the Presence of Gravity. (ekstern lenke)
• Per Pettersson; Eirik Keilegavlen; Tor Harald Sandve et al. (2025). Copula Modeling and Uncertainty Propagation in Field-Scale Simulation of CO2 Fault Leakage. (ekstern lenke)
• Jan Martin Nordbotten; Wietse Boon; Alessio Fumagalli et al. (2018). Unified approach to discretization of flow in fractured porous media. (ekstern lenke)
• Michele Starnoni; Inga Berre; Eirik Keilegavlen et al. (2021). Modeling and discretization of flow in porous media with thin, full-tensor permeability inclusions. (ekstern lenke)
• Juan Michael Sargado; Eirik Keilegavlen; Inga Berre et al. (2017). High-accuracy phase-field models for brittle fracture based on a new family of degradation functions. (ekstern lenke)
• Eirik Keilegavlen; Jeremy E. Kozdon; Bradley T. Mallison (2012). Multidimensional upstream weighting for multiphase transport on general grids. (ekstern lenke)
• Eirik Keilegavlen; Jan Martin Nordbotten; Ivar Aavatsmark (2009). Sufficient criteria are necessary for monotone control volume methods. (ekstern lenke)
• Eirik Keilegavlen; Jarle Berntsen (2009). Non-hydrostatic pressure in sigma-coordinate ocean models. (ekstern lenke)
• Yury Zabegaev; Inga Berre; Eirik Keilegavlen (2026). A block preconditioner for thermo-poromechanics with frictional deformation of fractures. (ekstern lenke)
• Sæunn Halldorsdottir; Inga Berre; Eirik Keilegavlen et al. (2023). Crustal Conditions Favoring Convective Downward Migration of Fractures in Deep Hydrothermal Systems. (ekstern lenke)
• Jan Ole Skogestad; Eirik Keilegavlen; Jan Martin Nordbotten (2015). Two-scale preconditioning for two-phase nonlinear flows in porous media. (ekstern lenke)
• Erlend Hodneland; Eirik Keilegavlen; Erik Andreas Hanson et al. (2018). In vivo detection of chronic kidney disease using tissue deformation fields from dynamic MR imaging.. (ekstern lenke)
• Eirik Keilegavlen; Eivind Fonn; Kjetil Andre Johannessen et al. (2023). PoroTwin: A Digital Twin for a FluidFlower Rig. (ekstern lenke)
• Max Akira Endo Kokubun; Adrian Muntean; Florin Adrian Radu et al. (2019). A pore-scale study of transport of inertial particles by water in porous media. (ekstern lenke)
• Eirik Keilegavlen; Ivar Aavatsmark (2011). Monotonicity for MPFA methods on triangular grids. (ekstern lenke)
• Alessio Fumagalli; Eirik Keilegavlen (2019). Dual virtual element methods for discrete fracture matrix models. (ekstern lenke)
• Trung Hau Dang; Inga Berre; Eirik Keilegavlen (2022). Two-level simulation of injection-induced fracture slip and wing-crack propagation in poroelastic media. (ekstern lenke)
• Halvor Møll Nilsen; Paulo Herrera; Seyed Meisam Ashraf et al. (2011). Field-case simulation of CO2-plume migration using vertical-equilibrium models. (ekstern lenke)
• Yury Zabegaev; Eirik Keilegavlen; Einar Iversen et al. (2024). Automated linear solver selection for simulation of multiphysics processes in porous media. (ekstern lenke)
• Ivar Stefansson; Eirik Keilegavlen; Inga Berre (2021). A fully coupled numerical model of thermo-hydro-mechanical processes and fracture contact mechanics in porous media. (ekstern lenke)
• Ivar Stefansson; Eirik Keilegavlen (2023). Numerical Treatment of State-Dependent Permeability in Multiphysics Problems. (ekstern lenke)
• Inga Berre; Ivar Stefansson; Eirik Keilegavlen (2020). Fault slip in hydraulic stimulation of geothermal reservoirs: Governing mechanisms and process-structure interaction. (ekstern lenke)
• Alessio Fumagalli; Eirik Keilegavlen (2018). Dual virtual element method for discrete fractures networks. (ekstern lenke)
• B Guo; Karl W. Bandilla; Eirik Keilegavlen et al. (2014). Application of Vertically-Integrated Models with Subscale Vertical Dynamics to Field Sites for CO2 Sequestration. (ekstern lenke)
• Enrico Ballini; Luca Formaggia; Alessio Fumagalli et al. (2024). A hybrid upwind scheme for two-phase flow in fractured porous media. (ekstern lenke)
• Eirik Keilegavlen; Laure Duboeuf; Anna Maria Dichiarante et al. (2021). Hydro-mechanical simulation and analysis of induced seismicity for a hydraulic stimulation test at the Reykjanes geothermal field, Iceland. (ekstern lenke)
• Jan Martin Nordbotten; Eirik Keilegavlen (2025). Two-point stress approximation: A simple and robust finite volume method for linearized (poro-)elasticity and Stokes flow. (ekstern lenke)
• Shin Irgens Banshoya; Inga Berre; Eirik Keilegavlen (2025). A simulation study of the impact of fracture networks on the co-production of geothermal energy and lithium. (ekstern lenke)
• Eirik Keilegavlen; Alessio Fumagalli; Runar Lie Berge et al. (2019). Implementation of mixed-dimensional models for flow in fractured porous media. (ekstern lenke)
• Sergey Alyaev; Eirik Keilegavlen; Jan Martin Nordbotten (2014). Analysis of control volume heterogeneous multiscale methods for single phase flow in porous media. (ekstern lenke)
• Ivar Stefansson; Inga Berre; Eirik Keilegavlen (2018). Finite-volume discretisations for flow in fractured porous media. (ekstern lenke)
• Shin Irgens Banshoya; Inga Berre; Eirik Keilegavlen (2023). Simulation of Reactive Transport in Fractured Porous Media. (ekstern lenke)
• Luisa Fernanda Zuluaga; Atle Rotevatn; Eirik Keilegavlen et al. (2016). The effect of deformation bands on simulated fluid flow within fault-propagation fold trap types: Lessons from the San Rafael monocline, Utah. (ekstern lenke)
• Elyes Ahmed; Alessio Fumagalli; Ana Budisa et al. (2021). Robust Linear Domain Decomposition Schemes for Reduced Nonlinear Fracture Flow Models. (ekstern lenke)
• Eirik Keilegavlen; Jan Martin Nordbotten; Annette Stephansen (2012). Tensor relative permeabilities: Origin, modeling and numerical discretization. (ekstern lenke)
• Anna Nissen; Eirik Keilegavlen; Tor Harald Sandve et al. (2017). Heterogeneity preserving upscaling for heat transport in fractured geothermal reservoirs. (ekstern lenke)
• Eren Ucar; Inga Berre; Eirik Keilegavlen (2017). Postinjection normal closure of fractures as a mechanism for induced seismicity. (ekstern lenke)
• Eirik Keilegavlen; Jan Martin Nordbotten (2014). Conservative inexact solvers for porous media flow. (ekstern lenke)
• Max Akira Endo Kokubun; Florin Adrian Radu; Eirik Keilegavlen et al. (2018). Transport of polymer particles in oil–water flow in porous media: Enhancing oil recovery. (ekstern lenke)
• Eirik Keilegavlen; Jan Martin Nordbotten (2017). Finite volume methods for elasticity with weak symmetry. (ekstern lenke)

Konferanseforedrag

• Eirik Keilegavlen; Ivar Stefansson; Inga Berre et al. (2019). Enhancing Geothermal Reservoirs – Modelling and Analysis of Hydraulic and Thermal Stimulation. (ekstern lenke)
• Shin Irgens Banshoya; Inga Berre; Eirik Keilegavlen (2021). Control volume discretization of flow and chemical reactions in fractured porous media. (ekstern lenke)
• Eirik Keilegavlen; Alessio Fumagalli (2021). A Flow Discretization for Conforming Discrete Fracture Matrix Models with Upscaling of Microscale Fractures. (ekstern lenke)
• Eirik Keilegavlen; Eren Ucar; Jan Martin Nordbotten et al. (2017). Finite volume discretizations of poro-elasticity in high­ contrast media. (ekstern lenke)
• Anna Maria Nissen; Per Pettersson; Eirik Keilegavlen et al. (2015). Incorporating Geological Uncertainty in Error Control for Linear Solvers. (ekstern lenke)
• Jakub Wiktor Both; Bergit Brattekås; Eirik Keilegavlen et al. (2023). Bridging the gap between lab experiments and mixed-dimensional modeling for flow and transport in fractured media. (ekstern lenke)
• Runar Lie Berge; Eirik Keilegavlen; Alessio Fumagalli et al. (2018). PorePy: A Python Simulation Tool for Fractured and Deformable Porous Media​. (ekstern lenke)
• Juan Michael Sargado; Eirik Keilegavlen; Inga Berre et al. (2017). High-accuracy phase-field models for brittle fracture based on a new family of degradation functions. (ekstern lenke)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen (2018). Modeling fracture reactivation in a mixed dimensional setting​: Friction models and numerical challenges​. (ekstern lenke)
• Omar Yesid Duran Triana; Veljko Lipovac; Eirik Keilegavlen et al. (2023). An isenthalpic formulation for simulating geothermal systems with phase changes. (ekstern lenke)
• Alessio Fumagalli; Eirik Keilegavlen; Pål Næverlid Sævik (2017). Dual virtual element method for fractured geothermal systems. (ekstern lenke)
• Sæunn Halldorsdottir; Inga Berre; Eirik Keilegavlen et al. (2018). Modelling of conditions close to geothermal heat sources. (ekstern lenke)
• Eirik Keilegavlen; Alessio Fumagalli; Ivar Stefansson et al. (2019). Mixed-dimensional discrete fracture matrix models with heterogeneous discretization and non-matching grids. (ekstern lenke)
• Inga Berre; Eren Ucar; Eirik Keilegavlen (2017). A numerical approach for simulation of shear dilation of three-dimensional fracture networks. (ekstern lenke)
• Ivar Stefansson; Eirik Keilegavlen; Jakub Wiktor Both et al. (2024). Multiphysics simulation of fractured geothermal systems using PorePy. (ekstern lenke)
• Eirik Keilegavlen (2021). Simulation Technology for Nonlinear Multiphysics Problems in Mixed-Dimensional Geometries. (ekstern lenke)
• Runar Lie Berge; Sarah Eileen Gasda; Eirik Keilegavlen et al. (2021). Effective permeability of deformation bands in fault damage zones – Can deformation bands reduce the risk of fault leakage?. (ekstern lenke)
• Marius Nevland; Inga Berre; Eirik Keilegavlen et al. (2024). Nonlinear Solvers for Poromechanics with Fracture Contact Mechanics. (ekstern lenke)
• Sæunn Halldorsdottir; Inga Berre; Eirik Keilegavlen et al. (2020). Conceptual model of heat transfer near volcanic geothermal heat sources. (ekstern lenke)
• Inga Berre; Haakon Langeland Ervik; Ivar Stefansson et al. (2021). Discrete Fracture-Matrix Modelling of Coupled THM Processes and Fracture Deformation. (ekstern lenke)
• Ivar Stefansson; Inga Berre; Eirik Keilegavlen (2017). Handling of Fractures and Intersections in Finite Volume Methods. (ekstern lenke)
• Sæunn Halldorsdottir; Egill A Gudnason; Inga Berre et al. (2021). Heat Transfer and Flow Paths in the Deep Part of the IDDP-2 Well in Reykjanes, SW Iceland. (ekstern lenke)
• Inga Berre; Runar Lie Berge; Eirik Keilegavlen et al. (2018). Three-dimensional numerical modelling of hydraulic stimulation of geothermal reservoirs: permeability enhancement and induced seismicity. (ekstern lenke)
• Eirik Keilegavlen; Shin Irgens Banshoya; Sæunn Halldorsdottir et al. (2022). Modeling and Simulation of Thermo-Hydro-Mechanical-Chemical Processes in Fractured Rocks with Applications to Geothermal Energy. (ekstern lenke)
• Inga Berre; Eren Ucar; Eirik Keilegavlen (2016). Enhanced geothermal systems – modeling of fracture response to hydraulic stimulation. (ekstern lenke)
• Eirik Keilegavlen; Alessio Fumagalli; Runar Lie Berge et al. (2017). PorePy: A Python Simulation Tool for Fractured and Deformable Porous Media. (ekstern lenke)
• Elin Skurtveit; Tore Ingvald Bjørnarå; Emma Michie et al. (2022). Updated workflow for fault risk assessment and application to Vette Fault Zone, Horda Platform, offshore Norway. (ekstern lenke)
• Marius Nevland; Inga Berre; Eirik Keilegavlen et al. (2023). Mathematical Modeling of Fractured Geothermal Systems. (ekstern lenke)
• Michele Starnoni; Inga Berre; Eirik Keilegavlen et al. (2019). Consistent discretization of flow for inhomogeneous gravitational fields. (ekstern lenke)
• Michele Starnoni; Inga Berre; Jan Martin Nordbotten et al. (2019). Challenges in Modelling the Anisotropic Poroelastoplastic Behaviour of Fractured Rocks as Homogenized Media. (ekstern lenke)
• Sæunn Halldorsdottir; Gudni Axelsson; Inga Berre et al. (2019). Enhanced fluid convection and heat transfer near the bottom of the IDDP-1 well in Krafla, NE Iceland. (ekstern lenke)
• Inga Berre; Jakub Wiktor Both; Sæunn Halldorsdottir et al. (2024). Mathematical and Numerical Modelling of Process-Structure Interaction in FracturedGeothermal Systems. (ekstern lenke)
• Jakub Wiktor Both; Eirik Keilegavlen; Jan Martin Nordbotten et al. (2023). PoroTwin: A Digital Twin for a Meter-Scale Porous Medium. (ekstern lenke)
• Eirik Keilegavlen; Ivar Stefansson; Inga Berre et al. (2020). A simulation model for fracture reactivation accounting for thermo-hydro-mechanical forces with applications to geothermal systems. (ekstern lenke)
• Eirik Keilegavlen; Sissel Mundal; Ivar Aavatsmark (2010). Near-well discretisations for anisotropic heterogeneous problems on flexible grids. (ekstern lenke)
• Eirik Keilegavlen; Jan Martin Nordbotten; Wietse Boon et al. (2018). A general framework for heterogeneous discretizations in mixed-dimensional single-phase flow. (ekstern lenke)
• Ivar Stefansson; Inga Berre; Alessio Fumagalli et al. (2019). Numerical Methods for Flow in Fractured Porous Media in a Unified Implementation. (ekstern lenke)
• Eirik Keilegavlen; Alessio Fumagalli; Runar Lie Berge et al. (2017). Discretization of mixed-dimensional problems using legacy codes. (ekstern lenke)
• Jakub Wiktor Both; Marius Nevland; Ivar Stefansson et al. (2025). Fracture reactivation in geothermal reservoirs: Strategies for numerical modeling of fracture contact mechanics in thermoporoelastic media. (ekstern lenke)
• Hau Trung Dang; Inga Berre; Eirik Keilegavlen (2018). Fracture propagation in porous medium under shear stimulation of fluid flow. (ekstern lenke)
• Eirik Keilegavlen; Jan Martin Nordbotten; Eren Ucar et al. (2016). A weakly symmetric finite volume method for elasticity with application to fractures in porous media. (ekstern lenke)
• Hau Trung Dang; Inga Berre; Eirik Keilegavlen (2019). Numerical investigation of wing crack initiation and propagation due to shear slip. (ekstern lenke)
• Hau Trung Dang; Inga Berre; Eirik Keilegavlen (2018). Multi-fracture propagation in porous medium under shear stimulation of fluid flow. (ekstern lenke)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen (2017). Hydraulic stimulation and friction laws for fracture deformation – a numerical study. (ekstern lenke)
• Inga Berre; Eren Ucar; Eirik Keilegavlen (2017). Simulation of hydraulic stimulation of fractured geothermal reservoirs. (ekstern lenke)
• Sæunn Halldorsdottir; Inga Berre; Eirik Keilegavlen et al. (2022). Thermal fracturing and heat transfer below the superhot IDDP-1 well in Krafla, NE Iceland. (ekstern lenke)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen et al. (2024). Viscous fingering in fractured porous media. (ekstern lenke)
• Inga Berre; Eirik Keilegavlen; Eren Ucar (2014). Modeling of Permeability Enhancement in Geothermal Reservoirs by Shear-Dilation Stimulation. (ekstern lenke)
• Inga Berre; Shin Irgens Banshoya; Ivar Stefansson et al. (2024). Simulation of THMC processes in fractured porous media. (ekstern lenke)
• Inga Berre; Jakub Wiktor Both; Omar Yesid Duran Triana et al. (2025). Multiphysics processes in fractured geothermal reservoirs. (ekstern lenke)
• Laure Duboeuf; Volker Oye; Inga Berre et al. (2019). Induced seismicity in the Reykjanes geothermal reservoir, Iceland: seismic event monitoring, characterization and clustering. (ekstern lenke)
• Inga Berre; Eren Ucar; Eirik Keilegavlen (2017). An approach for simulation of hydraulic stimulation of a fractured geothermal reservoir. (ekstern lenke)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen et al. (2019). Numerical Modeling of Fracture Reactivation in a Three-dimensional Domain Based on a Coulomb Friction Law. (ekstern lenke)
• Hau Trung Dang; Eirik Keilegavlen; Inga Berre (2019). Fracture mechanics of brittle materials: fracture criteria and numerical approach. (ekstern lenke)
• Ivar Stefansson; Inga Berre; Eirik Keilegavlen et al. (2018). Modelling of thermal shock induced fracture growth. (ekstern lenke)
• Inga Berre; Runar Lie Berge; Hau Trung Dang et al. (2020). Modelling of process-structure interaction resulting from fluid injection in fractured subsurface systems. (ekstern lenke)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen et al. (2018). Viscous fingering in fractured porous media. (ekstern lenke)
• Eirik Keilegavlen; Alessio Fumagalli; Ivar Stefansson et al. (2018). Unified modeling and discretization of flow in fractured porous media. (ekstern lenke)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen (2017). Hydraulic stimulation and friction laws for fracture deformation – a numerical study. (ekstern lenke)
• Elin Skurtveit; Tore Ingvald Bjørnarå; Bahman Bohloli et al. (2020). Dynamic changes in fault permeability – How can experimental work provide support for fault seal integrity?. (ekstern lenke)
• Trung Hau Dang; Inga Berre; Eirik Keilegavlen (2022). Simulation of Induced Fracture Opening and Propagation in Poroelastic Rocks. (ekstern lenke)
• Juan Michael Sargado; Eirik Keilegavlen; Inga Berre et al. (2017). Hybrid FE-FV scheme for modeling pressure-induced fracture propagation in porous media using a phase-field approach. (ekstern lenke)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen (2018). Modeling fracture reactivation in a mixed dimensional setting​: Friction models and numerical challenges​. (ekstern lenke)
• Sarah Eileen Gasda; Tor Harald Sandve; Per Pettersson et al. (2023). FRISK project: Practical field-scale simulation approaches for quantification of fault-related leakage under uncertainty. (ekstern lenke)
• Inga Berre; Eirik Keilegavlen; Eren Ucar (2014). Mathematical modeling of permeability enhancement in geothermal reservoirs. (ekstern lenke)
• Sæunn Halldorsdottir; Inga Berre; Eirik Keilegavlen et al. (2021). Thermal fracturing and natural convection: A hidden source of geothermal activity in the earth’s crust?. (ekstern lenke)
• Sarah Eileen Gasda; Tor Harald Sandve; Per Pettersson et al. (2022). Practical field-scale simulation approaches for quantification of fault-related leakage under uncertainty. (ekstern lenke)
• Hau Trung Dang; Eirik Keilegavlen; Inga Berre (2022). Numerical modeling of injection-induced slip and propagation of fractures in poroelastic media. (ekstern lenke)

Konferanseposter

• Eda Onal; Eirik Keilegavlen; Helge K. Dahle et al. (2024). Coupling Strategies in Large-Scale Simulations of CO2 Storage. (ekstern lenke)
• Ana Budisa; Eirik Keilegavlen; Jan Martin Nordbotten et al. (2017). BDDC Preconditioner for Robust Discretization of Flow in Fractured Porous Media. (ekstern lenke)
• Juan Michael Sargado; Eirik Keilegavlen; Inga Berre et al. (2017). High-accuracy phase-field models for brittle fracture. (ekstern lenke)
• Luisa Fernanda Zuluaga; Atle Rotevatn; Alessio Fumagalli et al. (2018). Outcrop fracture characterization for geothermal reservoirs: challenges in optimizing inputs for reservoir models. (ekstern lenke)
• Eren Ucar; Inga Berre; Eirik Keilegavlen et al. (2015). Modeling of Hydroshearing in Geothermal Reservoirs. (ekstern lenke)
• Laure Duboeuf; Volker Oye; Inga Berre et al. (2018). Induced seismicity in a geothermal reservoir: a case study in the Reykjanes peninsula in Iceland. (ekstern lenke)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen (2017). Fracture Deformation Models in Geothermal Reservoirs. (ekstern lenke)
• Elin Skurtveit; Tore Ingvald Bjørnarå; Bahman Bohloli et al. (2020). Dynamic changes in fault permeability How can experimental work provide support for fault seal integrity?. (ekstern lenke)
• Eren Ucar; Eirik Keilegavlen; Inga Berre et al. (2016). Cell centered finite volume discretization of fractured deformable porous media. (ekstern lenke)
• Laure Duboeuf; Volker Oye; Inga Berre et al. (2019). Automatic picking for induced seismicity in Iceland using an EAT (Empirically Aggregated Template) methodology. (ekstern lenke)
• Juan Michael Sargado; Eirik Keilegavlen; Inga Berre et al. (2015). Coupling Issues Arising from Combining Fracture Phase-Field Models with Biot Poroelasticity. (ekstern lenke)
• Eirik Keilegavlen (2023). PoroTwin: A digital FluidFlower. (ekstern lenke)
• Ivar Stefansson; Inga Berre; Eirik Keilegavlen (2019). Simulation of temperature and pressure driven fracture deformation. (ekstern lenke)
• Eirik Keilegavlen (2022). WP 5 Coupling strategies and solvers for multi-model simulators. (ekstern lenke)
• Michele Starnoni; Inga Berre; Eirik Keilegavlen et al. (2018). Mixed-dimensional poroelasticity for deformable fractured porous media. (ekstern lenke)
• Sæunn Halldorsdottir; Inga Berre; Eirik Keilegavlen et al. (2020). Modelling Superhot Geothermal Systems - Modelling enhanced fluid convection and heat transfer in superhot geothermal systems in Iceland. (ekstern lenke)
• Juan Michael Sargado; Eirik Keilegavlen; Inga Berre et al. (2019). Phase-field Modeling of Brittle Crack Propagation in Saturated Porous Media. (ekstern lenke)
• Ana Budisa; Eirik Keilegavlen; Jan Martin Nordbotten et al. (2018). Efficient Linear Solvers for Mixed-dimensional Flow Problems in Fractured Porous Media. (ekstern lenke)
• Sæunn Halldorsdottir; Inga Berre; Eirik Keilegavlen et al. (2020). Utilization of superhot geothermal systems - Overview of field data from Iceland to be used in a new collaboration project between University of Bergen, ÍSOR, Equinor, Reykjavík Energy, Landsvirkjun and HS Orka. (ekstern lenke)
• Ivar Stefansson; Eirik Keilegavlen; Inga Berre (2017). Coupling Conditions for Finite Volume Methods for Fractured Porous Media. (ekstern lenke)
• Ivar Stefansson; Inga Berre; Eirik Keilegavlen (2017). Finite Volume Methods for Flow and Transport in 3-Dimensional Fractured Porous Media. (ekstern lenke)
• Jakub Wiktor Both; Bergit Brattekås; Eirik Keilegavlen et al. (2023). Bridging the Gap Between Lab Experiments and Mixed-Dimensional Modeling for Flow in Fractured Media. (ekstern lenke)

Konferanseabstrakt

• Sarah Eileen Gasda; Eirik Keilegavlen; Tor Harald Sandve et al. (2022). Practical field-scale simulation approaches for quantification of fault-related leakage under uncertainty. (ekstern lenke)
• Sæunn Halldorsdottir; Egill A. Gudnason; Inga Berre et al. (2021). Heat Transfer and Flow Paths in the Deep Part of the IDDP-2 Well in Reykjanes, SW Iceland. (ekstern lenke)

Doktorgradsavhandling

• Juan Michael Sargado; Eirik Keilegavlen; Inga Berre et al. (2019). Phase-field Modeling and Simulation of Brittle Fracture. (ekstern lenke)
• Eren Ucar; Inga Berre; Eirik Keilegavlen et al. (2018). Numerical modeling of shear stimulation in naturally fractured geothermal reservoirs. (ekstern lenke)
• Eirik Keilegavlen (2010). Robust Control Volume Methods for Reservoir Simulation on Challenging Grids. (ekstern lenke)

Forelesning

• Ana Budisa; Eirik Keilegavlen; Jan Martin Nordbotten et al. (2017). BDDC Preconditioner for Robust Discretization of Flow in Fractured Porous Media. (ekstern lenke)
• Eren Ucar; Inga Berre; Eirik Keilegavlen (2017). Understanding the stimulation of deep geothermal reservoirs through modeling and simulation. (ekstern lenke)
• Ivar Stefansson; Inga Berre; Eirik Keilegavlen (2017). Coupled processes in geothermal systems. (ekstern lenke)
• Juan Michael Sargado; Eirik Keilegavlen; Inga Berre et al. (2016). Improving the Accuracy of Phase-Field Models for Brittle Fracture. (ekstern lenke)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen (2017). Structural impact of fractures on dynamic processes in geothermal reservoirs. (ekstern lenke)
• Juan Michael Sargado; Eirik Keilegavlen; Inga Berre et al. (2015). Fracture propagation in Enhanced Geothermal Systems. (ekstern lenke)
• Juan Michael Sargado; Eirik Keilegavlen; Inga Berre et al. (2015). Phase-field modelling of fluid pressure-induced fractures. (ekstern lenke)
• Ana Budisa; Eirik Keilegavlen; Jan Martin Nordbotten et al. (2017). A BDDC Method for Robust Discretization of Flow in Fractured Porous Media. (ekstern lenke)
• Eirik Keilegavlen (2022). Work Package 5: Coupling strategies and solvers for multi-model simulators. (ekstern lenke)
• Ana Budisa; Eirik Keilegavlen; Jan Martin Nordbotten et al. (2018). Domain Decomposition Preconditioner for Mixed-dimensional Flow Problems in Fractured Porous Media. (ekstern lenke)
• Sergey Alyaev; Eirik Keilegavlen; Jan Martin Nordbotten (2017). A robust control volume heterogeneous multiscale method for non-linear flows in porous media. (ekstern lenke)
• Sæunn Halldorsdottir; Eirik Keilegavlen; Inga Berre (2020). Modelling Superheated and Supercritical Geothermal Systems (SiGS). (ekstern lenke)
• Sergey Alyaev; Eirik Keilegavlen; Jan Martin Nordbotten et al. (2017). Fractal structures in freezing brine. (ekstern lenke)
• Eirik Keilegavlen; Eivind Fonn; Kjetil Johannessen et al. (2023). PoroTwin: A Digital Twin for a Meter-Scale Porous Media. (ekstern lenke)
• Eirik Keilegavlen; Alessio Fumagalli; Inga Berre et al. (2017). Simulation of geothermal energy extraction on realistic geologies using the dual virtual element method. (ekstern lenke)
• Juan Michael Sargado; Eirik Keilegavlen; Inga Berre et al. (2016). Impact of Degradation Functions on the Accuracy of Phase-Field Models for Brittle Fracture. (ekstern lenke)
• Hau Trung Dang; Eirik Keilegavlen; Inga Berre (2019). Numerical investigation of wing crack initiation and propagation due to shear slip. (ekstern lenke)
• Eren Ucar; Inga Berre; Eirik Keilegavlen (2015). Simulation of Slip-Induced Permeability Enhancement Accounting For Multiscale Fractures. (ekstern lenke)

Vitenskapelig bokkapittel

• Tor Harald Sandve; Eirik Keilegavlen; Jan Martin Nordbotten (2012). Mass Conservative Domain Decomposition for Fractured Porous Media. (ekstern lenke)
• Eren Ucar; Inga Berre; Eirik Keilegavlen (2015). Simulation of Slip-Induced Permeability Enhancement Accounting For Multiscale Fractures. (ekstern lenke)
• Sæunn Halldorsdottir; Gudni Axelsson; Inga Berre et al. (2019). Enhanced fluid convection and heat transfer near the bottom of the IDDP-1 well in Krafla, NE Iceland. (ekstern lenke)
• Hau Trung Dang; Eirik Keilegavlen; Inga Berre (2019). Numerical investigation of wing crack initiation and propagation due to shear slip. (ekstern lenke)
• Omar Yesid Duran Triana; Veljko Lipovac; Eirik Keilegavlen et al. (2023). An isenthalpic formulation for simulating geothermal systems with phase changes. (ekstern lenke)
• Eirik Keilegavlen; Jeremy Kozdon; Brad T. Mallison (2010). Monotone Multi-dimensional Upstream Weighting on General Grids. (ekstern lenke)
• Ivar Stefansson; Inga Berre; Eirik Keilegavlen (2020). Finite Volume Discretisation of Fracture Deformation in Thermo-poroelastic Media. (ekstern lenke)
• Tor Harald Sandve; Inga Berre; Eirik Keilegavlen et al. (2013). Multiscale simulation of flow and heat transport in fractured geothermal reservoirs: inexact solvers and improved transport upscaling. (ekstern lenke)
• Ivar Stefansson; Runar Lie Berge; Inga Berre et al. (2021). Modelling of Thermally Induced Fracture Slip caused by Fluid Injection During Geothermal Production. (ekstern lenke)
• Inga Berre; Runar Lie Berge; Eirik Keilegavlen et al. (2018). Three-dimensional numerical modelling of fracture reactivation due to fluid injection in geothermal reservoirs. (ekstern lenke)
• Eirik Keilegavlen; Ivar Aavatsmark (2008). Monotonicity for control volume methods on unstructured grids. (ekstern lenke)
• Michele Starnoni; Inga Berre; Eirik Keilegavlen et al. (2019). Anisotropic Poroelastoplastic Constitutive Model of Fractured Rocks. (ekstern lenke)
• Eren Ucar; Inga Berre; Eirik Keilegavlen (2016). Modelling of the Shear Dilation Based Hydraulic Stimulation in Enhanced Geothermal Systems Considering Fractures in Different Scales. (ekstern lenke)
• Sergey Alyaev; Eirik Keilegavlen; Jan Martin Nordbotten (2012). MULTISCALE SIMULATION OF NON-DARCY FLOWS. (ekstern lenke)
• Sissel Mundal; Eirik Keilegavlen; Ivar Aavatsmark (2008). Discretization schemes for anisotropic heterogeneous problems on near-well grids. (ekstern lenke)
• Shin Irgens Banshoya; Eirik Keilegavlen; Inga Berre (2023). Simulation of reactive transport in fractured geothermal reservoirs. (ekstern lenke)
• Runar Lie Berge; Sarah Eileen Gasda; Eirik Keilegavlen et al. (2021). Effective permeability of deformation bands in fault damage zones – Can deformation bands reduce the risk of fault leakage?. (ekstern lenke)
• Jan Martin Nordbotten; Eirik Keilegavlen; Andreas Sandvin (2012). Mass conservative domain decomposition for porous media flow. (ekstern lenke)
• Andreas Sandvin; Jan Ole Skogestad; Eirik Keilegavlen et al. (2010). A Multiscale Framework for Simulating Multi-phase Flow on Flexible Grids. (ekstern lenke)
• Jhabriel Varela; Sarah Eileen Gasda; Eirik Keilegavlen et al. (2021). A Finite-Volume-Based Module for Unsaturated Poroelasticity. (ekstern lenke)

Masteroppgave

• Jhabriel Varela; Jan Martin Nordbotten; Sarah Gasda et al. (2018). Implementation of an MPFA/MPSA-FV Solver for the Unsaturated Flow in Deformable Porous Media. (ekstern lenke)
• Elin Marie Elje; Jan Martin Nordbotten; Eirik Keilegavlen (2010). A Multiscale Approach to Estimate Large Scale Flow and Leakage from Geological Storage. (ekstern lenke)
• Anette Nedreli; Eirik Keilegavlen; Inga Berre (2014). Upscaling of heat-transport in complex heterogeneous media. (ekstern lenke)

Antologi

• Robert Klöfkorn; Eirik Keilegavlen; Florin Adrian Radu et al. (2020). Finite Volumes for Complex Applications IX - Methods, Theoretical Aspects, Examples. (ekstern lenke)
• Alessio Fumagalli; Inga Berre; Luca Formaggia et al. (2019). Numerical Methods for Processes in Fractured Porous Media. (ekstern lenke)

Populærvitenskapelig artikkel

• Eirik Keilegavlen (2015). Hvordan håndtere usikkerhet ved CO2-lagring. (ekstern lenke)
• Eirik Keilegavlen (2014). Sprekker er nøkkelen til dyp jordvarme. (ekstern lenke)

Konferanserapport

• Eirik Keilegavlen; Yuhe Zhang; Inga Berre (2026). A simulation study of the potential for co-production of geothermal energy and lithium. (ekstern lenke)
• Jakub Wiktor Both; Marius Nevland; Ivar Stefansson et al. (2025). Fracture reactivation in geothermal reservoirs: Strategies for numerical modeling of fracture contact mechanics in thermoporoelastic media. (ekstern lenke)

Kapittel i fagbok

• Micheal Babatunde Oguntola; Omar Yesid Duran Triana; Veljko Lipovac et al. (2025). A Unified Compositional Flow Model for Simulating Multiphase High-Enthalpy Geothermal Reservoirs. (ekstern lenke)

Medieintervju

• Øystein Rygg Haanæs; Inga Berre; Eirik Keilegavlen (2019). Matematiske modeller gir bedre forståelse av menneskeskapte jordskjelv. (ekstern lenke)

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