A5040515504- Advanced Numerical Methods in Computational Mathematics
- Advanced Mathematical Modeling in Engineering
- Reservoir Engineering and Simulation Methods
- Enhanced Oil Recovery Techniques
- CO2 Sequestration and Geologic Interactions
- Hydraulic Fracturing and Reservoir Analysis
- Composite Material Mechanics
- Computational Fluid Dynamics and Aerodynamics
- Groundwater flow and contamination studies
- Lattice Boltzmann Simulation Studies
- Fluid Dynamics and Turbulent Flows
- Geological Modeling and Analysis
- Seismic Imaging and Inversion Techniques
- Computer Graphics and Visualization Techniques
- Navier-Stokes equation solutions
- Methane Hydrates and Related Phenomena
- Distributed and Parallel Computing Systems
- Meteorological Phenomena and Simulations
- Numerical methods for differential equations
- Hydrocarbon exploration and reservoir analysis
- Gas Dynamics and Kinetic Theory
- Drilling and Well Engineering
- Matrix Theory and Algorithms
- Carbon Dioxide Capture Technologies
- Computational Geometry and Mesh Generation
SINTEF Digital
2017-2025
SINTEF
2016-2025
Norwegian University of Science and Technology
1998-2020
University of Oslo
1999-2014
University of Bergen
2009-2012
Accurate geological modelling of features such as faults, fractures or erosion requires grids that are flexible with respect to geometry. Such generally contain polyhedral cells and complex grid-cell connectivities. The grid representation for in turn affects the efficient implementation numerical methods subsurface flow simulations. It is well known conventional two-point flux-approximation only consistent K-orthogonal will, therefore, not converge general case. In recent years, there has...
We analyze and further develop a hierarchical multiscale method for the numerical simulation of two-phase flow in highly heterogeneous porous media. The is based upon mixed finite-element formulation, where fine-scale features are incorporated into set coarse-grid basis functions velocities. By using functions, we can retain efficiency an upscaling by solving pressure equation on (moderate-sized) coarse grid, while at same time produce detailed conservative velocity field underlying fine...
We present MRST-AD, a free, open-source framework written as part of the Matlab Reservoir Simulation Toolbox and designed to provide researchers with means for rapid prototyping experimentation problems in reservoir simulation. The article outlines design principles programming techniques used explains detail implementation full-featured, industry-standard black-oil model on unstructured grids. resulting simulator has been thoroughly validated against leading commercial benchmarks from SPE...
Summary Flow diagnostics, as referred to herein, are computational tools derived from controlled numerical flow experiments that yield quantitative information regarding the behavior of a reservoir model in settings much simpler than would be encountered actual field. In contrast output traditional simulators, flow-diagnostic measures can obtained within seconds. The methodology used evaluate, rank, and/or compare realizations or strategies, and speed makes it ideal for interactive...
The Open Porous Media (OPM) initiative is a community effort that encourages open innovation and reproducible research for simulation of porous media processes. OPM coordinates collaborative software development, maintains distributes open-source data sets, seeks to ensure these are available under free license in long-term perspective. In this paper, we present Flow, which reservoir simulator developed industrial use, as well some the individual components used make Flow. descriptions apply...
Summary This article contains the description of, and call for participation in, 11th Society of Petroleum Engineers Comparative Solution Project (the SPE CSP, https://spe.org/csp). It is motivated by simulation challenges associated with CO2 storage operations in geological settings realistic complexity. The CSP three versions: Version 11A a 2D geometry at laboratory scale, inspired recent forecasting validation study. For 11B, operational conditions from are rescaled to field...
The recently proposed high-order central difference schemes for conservation laws have a tendency of smearing linear discontinuities. In principle, Harten's artificial compression method (ACM) could be used to improve resolution. We analyze why this approach has not yet been successfully and derive more powerfulversion the ACM based on rigorous estimate total variation. discuss potential danger overcompression point out directions future algorithmic development.
When injected in deep saline aquifers, CO2 moves radially away from the injection well and progressively higher formation because of buoyancy forces. Analyzes have shown that after period, will potentially migrate over several kilometers horizontal direction but only tens meters vertical direction, limited by aquifer caprock. Because large plume dimensions, three-dimensional numerical simulations migration long periods time are computationally intensive. Thus, to get results within a...
Summary Simulation problems encountered in reservoir management are often computationally expensive because of the complex fluid physics for multiphase flow and large number grid cells required to honor geological heterogeneity. Multiscale methods have been proposed as a inexpensive alternative traditional fine-scale solvers computing conservative approximations pressure velocity fields on high-resolution geocellular models. Although wide variety such multiscale discussed literature, these...
Abstract We develop auto-tuned GPU implementations of ILU(0) and DILU preconditioners using mixed precision compare their performance against various GPU-based implementations, integrated into the open-source OPM Flow reservoir simulator. The are parallelized conservatively to ensure that results match those from serial computation up instruction set equivalence. Our implementation incorporates techniques such as graph coloring, row reordering, matrix splitting, mixed-precision schemes,...
Abstract Time-step selection in fully implicit reservoir simulations is typically guided by the magnitude of changes solution variables and number nonlinear iterations required to converge previous steps. However, for complex models, these criteria often fail accurately predict need reduced time Strong nonlinearities flow equations can lead scenarios where even minor saturation a few cells cause significant variations rates, capillary pressures, or injectivity—particularly near wells...