13 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…
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…