293 citations · 1k across the 45 of their papers we have counts for
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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 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…
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…
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…
Flow in fractured porous media: A review of conceptual models and discretization approaches
Inga Berre, Florian Doster, Eirik Keilegavlen
The last decade has seen a strong increase of research into flows in fractured porous media, mainly related to subsurface processes, but also in materials science and biological ap…
Reactivation of Fractures in Subsurface Reservoirs - a Numerical Approach using a Static-Dynamic Friction Model
Runar L. Berge, Inga Berre, Eirik Keilegavlen
Fluid-induced slip of fractures is characterized by strong multiphysics couplings. Three physical processes are considered: Flow, rock deformation and fracture deformation. The fra…
Three-Dimensional Numerical Modeling of Shear Stimulation of Naturally Fractured Reservoirs
Eren Ucar, Inga Berre, Eirik Keilegavlen
Shear dilation based hydraulic stimulations enable exploitation of geothermal energy from reservoirs with inadequate initial permeability. While contributing to enhancing the reser…
Post-injection normal closure of fractures as a mechanism for induced seismicity
Eren Ucar, Inga Berre, Eirik Keilegavlen
Understanding the controlling mechanisms underlying injection-induced seismicity is important for optimizing reservoir productivity and addressing seismicity-related concerns relat…
Thermal Fracturing of Geothermal Wells and the Effects of Borehole Orientation
Kjetil M. D. Hals, Inga Berre
An enhanced geothermal system (EGS) expands the potential of geothermal energy by enabling the exploitation of regions that lack conventional hydrothermal resources. The EGS subsur…