Runar L. Berge

ORCID: 0000-0002-8490-2284
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About
Contact & Profiles
Research Areas
  • Hydraulic Fracturing and Reservoir Analysis
  • Groundwater flow and contamination studies
  • Seismic Imaging and Inversion Techniques
  • Enhanced Oil Recovery Techniques
  • CO2 Sequestration and Geologic Interactions
  • Reservoir Engineering and Simulation Methods
  • Contact Mechanics and Variational Inequalities
  • Lattice Boltzmann Simulation Studies
  • Numerical methods in engineering
  • Rock Mechanics and Modeling
  • Advanced Numerical Methods in Computational Mathematics
  • Hydrocarbon exploration and reservoir analysis
  • Dam Engineering and Safety
  • Drilling and Well Engineering
  • earthquake and tectonic studies
  • Geotechnical and Geomechanical Engineering
  • Landslides and related hazards
  • Teaching and Learning Programming
  • Geological Modeling and Analysis
  • Elasticity and Material Modeling
  • Simulation Techniques and Applications
  • Advanced ceramic materials synthesis
  • Mechanical stress and fatigue analysis
  • Computational Geometry and Mesh Generation
  • Cognitive and developmental aspects of mathematical skills

Volda University College
2022-2025

University of Bergen
2017-2020

Abstract Development of models and dedicated numerical methods for dynamics in fractured rocks is an active research field, with moving towards increasingly advanced process couplings complex fracture networks. The inclusion coupled processes simulation challenged by the high aspect ratio fractures, geometry networks, crucial impact that completely change characteristics on fracture-rock interface. This paper provides a general discussion design principles introducing fractures simulators,...

10.1007/s10596-020-10002-5 article EN cc-by Computational Geosciences 2020-10-14

Summary A fractured poroelastic body is considered where the opening of fractures governed by a nonpenetration law, whereas slip described Coulomb‐type friction law. This physical model results in nonlinear variational inequality problem. The rewritten as complementary function, and semismooth Newton method used to solve system equations. For discretization, we use hybrid scheme displacements are given terms degrees freedom per element, an additional Lagrange multiplier representing traction...

10.1002/nme.6238 article EN cc-by International Journal for Numerical Methods in Engineering 2019-09-13

10.1007/s10649-024-10380-y article EN cc-by Educational Studies in Mathematics 2025-01-15

Fractures are ubiquitous in the subsurface and strongly affect flow deformation. The physical shape of fractures, they long thin objects, puts strong limitations on how effect this dynamics can be incorporated into standard reservoir simulation tools. This paper reports development an open-source software framework, termed PorePy, which is aimed at transport three-dimensional fractured reservoirs, as well deformation due to shearing along fracture fault planes. Starting from a description...

10.48550/arxiv.1712.00460 preprint EN other-oa arXiv (Cornell University) 2017-01-01

Abstract The effect of heterogeneity induced by highly permeable fracture networks on viscous miscible fingering in porous media is examined using high-resolution numerical simulations. We consider the planar injection a less fluid into two-dimensional fractured medium that saturated with more fluid. This problem contains two sets fundamentally different preferential flow regimes; first caused fingering, and second due to permeability contrasts between fractures rock matrix. study transition...

10.1007/s11242-024-02081-0 article EN cc-by Transport in Porous Media 2024-04-16

Abstract This work consists of two parts. In the first part, we present new methods for generating unstructured polyhedral grids that align to prescribed geometric objects. Control-point alignment cell centroids is introduced accurately represent horizontal and multilateral wells, but can also be used create volumetric representations fracture networks. Boundary faces preserve geological features such as layers, fractures, faults, and/or pinchouts. Prescribed objects will often intersect...

10.2118/182666-ms article EN SPE Reservoir Simulation Conference 2017-02-11

Development of models and dedicated numerical methods for dynamics in fractured rocks is an active research field, with moving towards increasingly advanced process couplings complex fracture networks. The inclusion coupled processes simulation challenged by the high aspect ratio fractures, geometry networks crucial impact that completely change characteristics on fracture-rock interface. This paper provides a general discussion design principles introducing fractures simulators, defines...

10.5281/zenodo.3374624 article EN Zenodo (CERN European Organization for Nuclear Research) 2019-08-22

A fractured poroelastic body is considered where the opening of fractures governed by a nonpenetration law while slip described Coulomb-type friction law. This physical model results in nonlinear variational inequality problem. The rewritten as complimentary function, and semismooth Newton method used to solve system equations. For discretization, we use hybrid scheme displacements are given terms degrees freedom per element, an additional Lagrange multiplier representing traction added on...

10.5281/zenodo.3375641 article EN cc-by Zenodo (CERN European Organization for Nuclear Research) 2019-04-27

Development of models and dedicated numerical methods for dynamics in fractured rocks is an active research field, with moving towards increasingly advanced process couplings complex fracture networks. The inclusion coupled processes simulation challenged by the high aspect ratio fractures, geometry networks crucial impact that completely change characteristics on fracture-rock interface. This paper provides a general discussion design principles introducing fractures simulators, defines...

10.48550/arxiv.1908.09869 preprint EN other-oa arXiv (Cornell University) 2019-01-01

The effect of heterogeneities induced by highly permeable fracture networks on viscous miscible fingering in porous media is examined using high-resolution numerical simulations. We consider the planar injection a less fluid into two-dimensional fractured medium which saturated with more fluid. This problem contains two sets fundamentally different preferential flow regimes; first caused and second due to permeability contrasts between fractures rock matrix. study transition from regime...

10.5281/zenodo.3249931 article EN other-oa Zenodo (CERN European Organization for Nuclear Research) 2019-06-19

Quantifying the risk of CO2 leakage along faults is important for building confidence in storage faulted reservoirs. Increased understanding has been gained recent years on fault geology and their statistics from outcrop analogues laboratory studies. Detailed fault-flow simulation studies have also assessed impact heterogeneity along-fault at scale meters. However, fine-scale impacted by field-scale reservoir processes possibly regional-scale pressure dynamics. It remains a challenge to...

10.2139/ssrn.4277020 article EN SSRN Electronic Journal 2022-01-01

Models that involve coupled dynamics in a mixed-dimensional geometry are of increasing interest several applications. Here, we describe the development simulation model for flow fractured porous media, where fractures and their intersections form hierarchy interacting subdomains. We discuss implementation framework, with an emphasis on reuse existing discretization tools mono-dimensional problems. The key ingredients representation as graph, which allows convenient data storage,...

10.48550/arxiv.1712.07392 preprint EN other-oa arXiv (Cornell University) 2017-01-01
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