Eirik Keilegavlen studied applied and computational mathematics at the University of Bergen (UoB), where he completed his PhD in 2010. Since 2012, he has been a permanent researcher in the Porous Media Group at the Department of Mathematics at UoB. In 2013–14, he held a position as an Associate Visiting Research Scholar at Princeton University.

Keilegavlen’s research interests include mathematical modeling and numerical methods for coupled processes in the subsurface, motivated by applications such as geothermal energy and subsurface carbon storage. His expertise covers spatial discretization methods and solvers for linear and non-linear problems, with particular emphasis on simulations of fractured porous media. He combines this mathematical focus with an interest in applying advanced simulation techniques in other disciplines, and he regularly participates in interdisciplinary projects in collaboration with geologists, seismologists, geochemists, and engineers.

A central part of Keilegavlen’s work is the implementation of simulation technology in open-source scientific software. In 2017, he initiated development of the open-source simulation tool PorePy, tailored for coupled processes in fractured porous media, and he has been its lead developer since then. PorePy has been used extensively in research at UoB and has also been adopted by several research groups worldwide, including the PyGeoN offshoot developed at Politecnico di Milano.

In addition to leading the PorePy developer group, Keilegavlen has long experience as a project manager, heading projects financed by a combination of public and private resources. He also has extensive experience supervising early-career researchers, with a total of 16 PhD students -5 of them as main supervisor - and 4 postdoctoral researchers, two of them as main supervisor. Through his work with PorePy, he is strongly engaged in giving students experience in developing scientific software and using open-source tools.

Academic article

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

Conference lecture

• Eirik Keilegavlen; Ivar Stefansson; Inga Berre et al. (2019). Enhancing Geothermal Reservoirs – Modelling and Analysis of Hydraulic and Thermal Stimulation. (external link)
• Shin Irgens Banshoya; Inga Berre; Eirik Keilegavlen (2021). Control volume discretization of flow and chemical reactions in fractured porous media. (external link)
• Eirik Keilegavlen; Alessio Fumagalli (2021). A Flow Discretization for Conforming Discrete Fracture Matrix Models with Upscaling of Microscale Fractures. (external link)
• Eirik Keilegavlen; Eren Ucar; Jan Martin Nordbotten et al. (2017). Finite volume discretizations of poro-elasticity in high­ contrast media. (external link)
• Anna Maria Nissen; Per Pettersson; Eirik Keilegavlen et al. (2015). Incorporating Geological Uncertainty in Error Control for Linear Solvers. (external link)
• 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. (external link)
• Runar Lie Berge; Eirik Keilegavlen; Alessio Fumagalli et al. (2018). PorePy: A Python Simulation Tool for Fractured and Deformable Porous Media​. (external link)
• 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. (external link)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen (2018). Modeling fracture reactivation in a mixed dimensional setting​: Friction models and numerical challenges​. (external link)
• Omar Yesid Duran Triana; Veljko Lipovac; Eirik Keilegavlen et al. (2023). An isenthalpic formulation for simulating geothermal systems with phase changes. (external link)
• Alessio Fumagalli; Eirik Keilegavlen; Pål Næverlid Sævik (2017). Dual virtual element method for fractured geothermal systems. (external link)
• Sæunn Halldorsdottir; Inga Berre; Eirik Keilegavlen et al. (2018). Modelling of conditions close to geothermal heat sources. (external link)
• Eirik Keilegavlen; Alessio Fumagalli; Ivar Stefansson et al. (2019). Mixed-dimensional discrete fracture matrix models with heterogeneous discretization and non-matching grids. (external link)
• Inga Berre; Eren Ucar; Eirik Keilegavlen (2017). A numerical approach for simulation of shear dilation of three-dimensional fracture networks. (external link)
• Ivar Stefansson; Eirik Keilegavlen; Jakub Wiktor Both et al. (2024). Multiphysics simulation of fractured geothermal systems using PorePy. (external link)
• Eirik Keilegavlen (2021). Simulation Technology for Nonlinear Multiphysics Problems in Mixed-Dimensional Geometries. (external link)
• 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?. (external link)
• Marius Nevland; Inga Berre; Eirik Keilegavlen et al. (2024). Nonlinear Solvers for Poromechanics with Fracture Contact Mechanics. (external link)
• Sæunn Halldorsdottir; Inga Berre; Eirik Keilegavlen et al. (2020). Conceptual model of heat transfer near volcanic geothermal heat sources. (external link)
• Inga Berre; Haakon Langeland Ervik; Ivar Stefansson et al. (2021). Discrete Fracture-Matrix Modelling of Coupled THM Processes and Fracture Deformation. (external link)
• Ivar Stefansson; Inga Berre; Eirik Keilegavlen (2017). Handling of Fractures and Intersections in Finite Volume Methods. (external link)
• 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. (external link)
• 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. (external link)
• 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. (external link)
• Inga Berre; Eren Ucar; Eirik Keilegavlen (2016). Enhanced geothermal systems – modeling of fracture response to hydraulic stimulation. (external link)
• Eirik Keilegavlen; Alessio Fumagalli; Runar Lie Berge et al. (2017). PorePy: A Python Simulation Tool for Fractured and Deformable Porous Media. (external link)
• 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. (external link)
• Marius Nevland; Inga Berre; Eirik Keilegavlen et al. (2023). Mathematical Modeling of Fractured Geothermal Systems. (external link)
• Michele Starnoni; Inga Berre; Eirik Keilegavlen et al. (2019). Consistent discretization of flow for inhomogeneous gravitational fields. (external link)
• Michele Starnoni; Inga Berre; Jan Martin Nordbotten et al. (2019). Challenges in Modelling the Anisotropic Poroelastoplastic Behaviour of Fractured Rocks as Homogenized Media. (external link)
• 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. (external link)
• Inga Berre; Jakub Wiktor Both; Sæunn Halldorsdottir et al. (2024). Mathematical and Numerical Modelling of Process-Structure Interaction in FracturedGeothermal Systems. (external link)
• Jakub Wiktor Both; Eirik Keilegavlen; Jan Martin Nordbotten et al. (2023). PoroTwin: A Digital Twin for a Meter-Scale Porous Medium. (external link)
• 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. (external link)
• Eirik Keilegavlen; Sissel Mundal; Ivar Aavatsmark (2010). Near-well discretisations for anisotropic heterogeneous problems on flexible grids. (external link)
• Eirik Keilegavlen; Jan Martin Nordbotten; Wietse Boon et al. (2018). A general framework for heterogeneous discretizations in mixed-dimensional single-phase flow. (external link)
• Ivar Stefansson; Inga Berre; Alessio Fumagalli et al. (2019). Numerical Methods for Flow in Fractured Porous Media in a Unified Implementation. (external link)
• Eirik Keilegavlen; Alessio Fumagalli; Runar Lie Berge et al. (2017). Discretization of mixed-dimensional problems using legacy codes. (external link)
• 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. (external link)
• Hau Trung Dang; Inga Berre; Eirik Keilegavlen (2018). Fracture propagation in porous medium under shear stimulation of fluid flow. (external link)
• 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. (external link)
• Hau Trung Dang; Inga Berre; Eirik Keilegavlen (2019). Numerical investigation of wing crack initiation and propagation due to shear slip. (external link)
• Hau Trung Dang; Inga Berre; Eirik Keilegavlen (2018). Multi-fracture propagation in porous medium under shear stimulation of fluid flow. (external link)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen (2017). Hydraulic stimulation and friction laws for fracture deformation – a numerical study. (external link)
• Inga Berre; Eren Ucar; Eirik Keilegavlen (2017). Simulation of hydraulic stimulation of fractured geothermal reservoirs. (external link)
• Sæunn Halldorsdottir; Inga Berre; Eirik Keilegavlen et al. (2022). Thermal fracturing and heat transfer below the superhot IDDP-1 well in Krafla, NE Iceland. (external link)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen et al. (2024). Viscous fingering in fractured porous media. (external link)
• Inga Berre; Eirik Keilegavlen; Eren Ucar (2014). Modeling of Permeability Enhancement in Geothermal Reservoirs by Shear-Dilation Stimulation. (external link)
• Inga Berre; Shin Irgens Banshoya; Ivar Stefansson et al. (2024). Simulation of THMC processes in fractured porous media. (external link)
• Inga Berre; Jakub Wiktor Both; Omar Yesid Duran Triana et al. (2025). Multiphysics processes in fractured geothermal reservoirs. (external link)
• Laure Duboeuf; Volker Oye; Inga Berre et al. (2019). Induced seismicity in the Reykjanes geothermal reservoir, Iceland: seismic event monitoring, characterization and clustering. (external link)
• Inga Berre; Eren Ucar; Eirik Keilegavlen (2017). An approach for simulation of hydraulic stimulation of a fractured geothermal reservoir. (external link)
• 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. (external link)
• Hau Trung Dang; Eirik Keilegavlen; Inga Berre (2019). Fracture mechanics of brittle materials: fracture criteria and numerical approach. (external link)
• Ivar Stefansson; Inga Berre; Eirik Keilegavlen et al. (2018). Modelling of thermal shock induced fracture growth. (external link)
• Inga Berre; Runar Lie Berge; Hau Trung Dang et al. (2020). Modelling of process-structure interaction resulting from fluid injection in fractured subsurface systems. (external link)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen et al. (2018). Viscous fingering in fractured porous media. (external link)
• Eirik Keilegavlen; Alessio Fumagalli; Ivar Stefansson et al. (2018). Unified modeling and discretization of flow in fractured porous media. (external link)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen (2017). Hydraulic stimulation and friction laws for fracture deformation – a numerical study. (external link)
• 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?. (external link)
• Trung Hau Dang; Inga Berre; Eirik Keilegavlen (2022). Simulation of Induced Fracture Opening and Propagation in Poroelastic Rocks. (external link)
• 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. (external link)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen (2018). Modeling fracture reactivation in a mixed dimensional setting​: Friction models and numerical challenges​. (external link)
• 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. (external link)
• Inga Berre; Eirik Keilegavlen; Eren Ucar (2014). Mathematical modeling of permeability enhancement in geothermal reservoirs. (external link)
• 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?. (external link)
• Sarah Eileen Gasda; Tor Harald Sandve; Per Pettersson et al. (2022). Practical field-scale simulation approaches for quantification of fault-related leakage under uncertainty. (external link)
• Hau Trung Dang; Eirik Keilegavlen; Inga Berre (2022). Numerical modeling of injection-induced slip and propagation of fractures in poroelastic media. (external link)

Conference poster

• Eda Onal; Eirik Keilegavlen; Helge K. Dahle et al. (2024). Coupling Strategies in Large-Scale Simulations of CO2 Storage. (external link)
• Ana Budisa; Eirik Keilegavlen; Jan Martin Nordbotten et al. (2017). BDDC Preconditioner for Robust Discretization of Flow in Fractured Porous Media. (external link)
• Juan Michael Sargado; Eirik Keilegavlen; Inga Berre et al. (2017). High-accuracy phase-field models for brittle fracture. (external link)
• Luisa Fernanda Zuluaga; Atle Rotevatn; Alessio Fumagalli et al. (2018). Outcrop fracture characterization for geothermal reservoirs: challenges in optimizing inputs for reservoir models. (external link)
• Eren Ucar; Inga Berre; Eirik Keilegavlen et al. (2015). Modeling of Hydroshearing in Geothermal Reservoirs. (external link)
• Laure Duboeuf; Volker Oye; Inga Berre et al. (2018). Induced seismicity in a geothermal reservoir: a case study in the Reykjanes peninsula in Iceland. (external link)
• Runar Lie Berge; Inga Berre; Eirik Keilegavlen (2017). Fracture Deformation Models in Geothermal Reservoirs. (external link)
• 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?. (external link)
• Eren Ucar; Eirik Keilegavlen; Inga Berre et al. (2016). Cell centered finite volume discretization of fractured deformable porous media. (external link)
• Laure Duboeuf; Volker Oye; Inga Berre et al. (2019). Automatic picking for induced seismicity in Iceland using an EAT (Empirically Aggregated Template) methodology. (external link)
• Juan Michael Sargado; Eirik Keilegavlen; Inga Berre et al. (2015). Coupling Issues Arising from Combining Fracture Phase-Field Models with Biot Poroelasticity. (external link)
• Eirik Keilegavlen (2023). PoroTwin: A digital FluidFlower. (external link)
• Ivar Stefansson; Inga Berre; Eirik Keilegavlen (2019). Simulation of temperature and pressure driven fracture deformation. (external link)
• Eirik Keilegavlen (2022). WP 5 Coupling strategies and solvers for multi-model simulators. (external link)
• Michele Starnoni; Inga Berre; Eirik Keilegavlen et al. (2018). Mixed-dimensional poroelasticity for deformable fractured porous media. (external link)
• 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. (external link)
• Juan Michael Sargado; Eirik Keilegavlen; Inga Berre et al. (2019). Phase-field Modeling of Brittle Crack Propagation in Saturated Porous Media. (external link)
• Ana Budisa; Eirik Keilegavlen; Jan Martin Nordbotten et al. (2018). Efficient Linear Solvers for Mixed-dimensional Flow Problems in Fractured Porous Media. (external link)
• 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. (external link)
• Ivar Stefansson; Eirik Keilegavlen; Inga Berre (2017). Coupling Conditions for Finite Volume Methods for Fractured Porous Media. (external link)
• Ivar Stefansson; Inga Berre; Eirik Keilegavlen (2017). Finite Volume Methods for Flow and Transport in 3-Dimensional Fractured Porous Media. (external link)
• 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. (external link)

Conference abstract

• Sarah Eileen Gasda; Eirik Keilegavlen; Tor Harald Sandve et al. (2022). Practical field-scale simulation approaches for quantification of fault-related leakage under uncertainty. (external link)
• 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. (external link)

Doctoral thesis (PhD)

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

Lecture

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

Academic book chapter

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

Master’s thesis

• 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. (external link)
• Elin Marie Elje; Jan Martin Nordbotten; Eirik Keilegavlen (2010). A Multiscale Approach to Estimate Large Scale Flow and Leakage from Geological Storage. (external link)
• Anette Nedreli; Eirik Keilegavlen; Inga Berre (2014). Upscaling of heat-transport in complex heterogeneous media. (external link)

Book anthology

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

Popular science article

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

Conference report

• Eirik Keilegavlen; Yuhe Zhang; Inga Berre (2026). A simulation study of the potential for co-production of geothermal energy and lithium. (external link)
• 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. (external link)

Non-fiction book chapter

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

Media interview

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

See a complete overview of publications in Cristin.