293 citations · 1k across the 45 of their papers we have counts for
46 papers
Isochoric thermodynamic preconditioning for resolving mechanically induced phase change in fractured porous media
Veljko Lipovac, Eirik Keilegavlen, Inga Berre
Rapid pore-volume changes can trigger phase change on timescales shorter than characteristic transport times and may therefore be skipped by conventional nonlinear solves and adapt…
Numerical analysis of the Biot equations coupled to frictional contact mechanics
Marius Nevland, Kundan Kumar, Inga Berre +2
We consider a mathematical model of a poro-visco-elastic medium subject to frictional contact with a rigid obstacle, and study its numerical approximation. This model couples the B…
Mathematical Modeling of Salt Precipitation and Multi-Phase Flow in High Enthalpy Fractured Geothermal Systems
Micheal B. Oguntola, Omar Duran, Eirik Keilegavlen +1
Simulating high-enthalpy fractured geothermal reservoirs is challenging due to the complex coupled processes of non-isothermal, multiphase, multicomponent flow, strongly nonlinear…
Elastic waveform inversion for double-couple microseismic source estimation in vertically fractured transversely isotropic media
Ujjwal Shekhar, Einar Iversen, Florin A. Radu +2
Accurate characterization of microseismic events during fluid injection in sedimentary formations is essential to mitigate environmental risks. The source mechanism for microseismi…
Consistent initialization of mixed-dimensional multiphysics models for fractured reservoirs under geomechanical constraints and field measurements
Jakub Wiktor Both, Inga Berre
Modeling coupled processes in fractured porous media -- flow, deformation, fracture mechanics, and thermal/chemical effects -- often relies on mixed dimensional multiphysics formul…
A posteriori error estimates for mixed-dimensional Darcy flow using non-matching grids
Jhabriel Varela, Christian E. Schaerer, Eirik Keilegavlen +1
In this article, we extend the a posteriori error estimates for hierarchical mixed-dimensional elliptic equations developed in [Varela et al., J. Numer. Math., 48 (2023), pp. 247-2…
Persistent-variable thermal compositional simulation of multiphase flow with phase separation in porous media
Veljko Lipovac, Omar Duran, Eirik Keilegavlen +1
Thermal compositional multiphase flow in porous media with phase transitions involves complex nonlinear interactions among flow, transport, and phase equilibrium. This paper presen…
Data-driven linear solver selection and performance tuning for multiphysics simulations in porous media
Yury Zabegaev, Inga Berre, Eirik Keilegavlen
Modeling multiphysics processes in porous media requires preconditioned iterative linear solvers to enable efficient simulations at industry-relevant scales. These solvers are typi…
Augmented Lagrangian Solvers for Poroelasticity with Fracture Contact Mechanics
Marius Nevland, Inga Berre, Jakub Wiktor Both +1
In the subsurface, fractures and the surrounding porous rock can deform in interaction with fluid flow. Advanced mathematical models governing these coupled processes typically com…
A block preconditioner for thermo-poromechanics with frictional deformation of fractures
Yury Zabegaev, Inga Berre, Eirik Keilegavlen
The numerical modeling of fracture contact thermo-poromechanics is crucial for advancing subsurface engineering applications, including CO2 sequestration, production of geo-energy…
An efficient preconditioner for mixed-dimensional contact poromechanics based on the fixed stress splitting scheme
Yury Zabegaev, Inga Berre, Eirik Keilegavlen +1
Numerical simulation of fracture contact poromechanics is essential for various applications, including CO2 sequestration, geothermal energy production and underground gas storage.…
A simulation study of the impact of fracture networks on the co-production of geothermal energy and lithium
Shin Irgens Banshoya, Ingca Berre, Eirik Keilegavlen
Co-production of geothermal energy and lithium is an emerging opportunity with the potential to enhance the economic potential of geothermal operations. The economic reward of extr…
A Finite Volume Method for Elastic Waves in Heterogeneous, Anisotropic and Fractured Media
Ingrid Kristine Jacobsen, Inga Berre, Jan Martin Nordbotten +1
Numerical modeling of elastic wave propagation in the subsurface requires applicability to heterogeneous, anisotropic and discontinuous media, as well as support of free surface bo…
Automated solver selection for simulation of multiphysics processes in porous media
Yury Zabegaev, Eirik Keilegavlen, Einar Iversen +1
Porous media processes involve various physical phenomena such as mechanical deformation, transport, and fluid flow. Accurate simulations must capture the strong couplings between…
Flexible and rigorous numerical modelling of multiphysics processes in fractured porous media using PorePy
Ivar Stefansson, Jhabriel Varela, Eirik Keilegavlen +1
Multiphysics processes in fractured porous media is a research field of importance for several subsurface applications and has received considerable attention over the last decade.…
Modeling of mixed-mechanism stimulation for the enhancement of geothermal reservoirs
Hau Trung Dang, Eirik Keilegavlen, Inga Berre
Hydraulic stimulation is a critical process for increasing the permeability of fractured geothermal reservoirs. This technique relies on coupled hydromechanical processes induced b…
Integral equation method for microseismic wavefield modelling in anisotropic elastic media
Ujjwal Shekhar, Morten Jakobsen, Einar Iversen +2
In this paper, we present a frequency-domain volume integral method to model the microseismic wavefield in heterogeneous anisotropic-elastic media. The elastic wave equation is wri…
Multiscale simulation of injection-induced fracture slip and wing-crack propagation in poroelastic media
Hau Trung Dang, Inga Berre, Eirik Keilegavlen
In fractured poroelastic media under high differential stress, the shearing of fractures and faults and the corresponding propagation of wing cracks can be induced by fluid injecti…
Modelling and discretization of flow in porous media with thin, full-tensor permeability inclusions
Michele Starnoni, Inga Berre, Eirik Keilegavlen +1
When modelling fluid flow in fractured reservoirs, it is common to represent the fracturesas lower-dimensional inclusions embedded in the host medium. Existing discretizationsof fl…
Numerical modelling of convection-driven cooling, deformation and fracturing of thermo-poroelastic media
Ivar Stefansson, Eirik Keilegavlen, Sæunn Halldórsdóttir +1
Convection-driven cooling in porous media influences thermo-poro-mechanical stresses, thereby causing deformation. These processes are strongly influenced by the presence of fractu…
Hydro-mechanical simulation and analysis of induced seismicity for a hydraulic stimulation test at the Reykjanes geothermal field, Iceland
Eirik Keilegavlen, Laure Duboeuf, Anna Maria Dichiarante +8
The hydraulic stimulation of the well RN-34 at the Reykjanes geothermal field in Iceland caused increased seismic activity near the well. Here, we use this as a case study for inve…
Fault slip in hydraulic stimulation of geothermal reservoirs: governing mechanisms and process-structure interaction
Inga Berre, Ivar Stefansson, Eirik Keilegavlen
Hydraulic stimulation of geothermal reservoirs in low-permeability basement and crystalline igneous rock can enhance permeability by reactivation and shear dilation of existing fra…
A fully coupled numerical model of thermo-hydro-mechanical processes and fracture contact mechanics in porous media
Ivar Stefansson, Inga Berre, Eirik Keilegavlen
A range of phenomena in the subsurface is characterised by the interplay between coupled thermal, hydraulic and mechanical processes and deforming structures such as fractures. Mod…
Numerical modeling of wing crack propagation accounting for fracture contact mechanics
Hau Dang-Trung, Eirik Keilegavlen, Inga Berre
As a consequence of shearing, wing cracks can emerge from pre-existing fractures. The process involves the interaction of sliding of the existing fracture surfaces and the tensile…