Browsing SINTEF Open by Author "Lie, Knut-Andreas"
Now showing items 21-34 of 34
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Ranking and categorizing large-scale saline aquifer formations based on optimized CO2 storage potentials and economic factors
Allen, Rebecca; Nilsen, Halvor Møll; Andersen, Odd; Lie, Knut-Andreas (Journal article; Peer reviewed, 2017)The process of selecting a CO2 storage site involves evaluating many potentially suitable sites in terms of their storage potentials as well as their associated technical and economic limitations. As such, it is useful to ... -
Robust nonlinear Newton solver with adaptive interface-localized trust regions
Klemetsdal, Øystein; Møyner, Olav; Lie, Knut-Andreas (Peer reviewed; Journal article, 2019)The interplay of multiphase flow effects and PVT behavior encountered in reservoir simulations often gives strongly coupled nonlinear systems that are challenging to solve numerically. In a sequentially implicit method, ... -
Robust simulation of sharp-interface models for fast estimation of CO2 trapping capacity in large-scale aquifer systems
Nilsen, Halvor Møll; Lie, Knut-Andreas; Andersen, Odd (Journal article, 2015)Modeling geological carbon storage represents a new and substantial challenge for the subsurface geosciences. To increase understanding and make good engineering decisions, containment processes and large-scale storage ... -
Streamline simulation of a reactive advective flow with discontinuous flux function
Zefreh, Masoud Ghaderi; Nilsen, Halvor Møll; Lie, Knut-Andreas; Raynaud, Xavier; Doster, Florian (Journal article; Peer reviewed, 2018)Reactive transport in porous media with dissolution and precipitation has important applications in oil and gas industry and ground-water remediation. In this work, we present a simulation method for reactive flow in porous ... -
Streamline-Based History Matching: A Review
Stenerud, Vegard Røine; Lie, Knut-Andreas (Research report, 2007)In recent years, several methods for streamline-based history matching have been developed. These methods have proved to be efficient for three reasons: First, streamlines delineate flow patterns and can therefore be used ... -
Successful application of multiscale methods in a real reservoir simulator environment
Lie, Knut-Andreas; Møyner, Olav; Natvig, Jostein Roald; Kozlova, Antonina; Bratvedt, Kyrre; Watanabe, Shingo; Li, Zhuoyi (Journal article; Peer reviewed, 2017)For the past 10 years or so, a number of so-called multiscale methods have been developed as an alternative approach to upscaling and to accelerate reservoir simulation. The key idea of all these methods is to construct a ... -
The application of flow diagnostics for reservoir management
Møyner, Olav; Krogstad, Stein; Lie, Knut-Andreas (Journal article; Peer reviewed, 2014)Flow diagnostics, as referred to herein, are computational tools derived from controlled numerical flow experiments that yield quantitative information regarding the flow behavior of a reservoir model in settings much ... -
The single-cell transport problem for two-phase flow with polymer
Raynaud, Xavier; Lie, Knut-Andreas; Nilsen, Halvor Møll; Rasmussen, Atgeirr Flø (Journal article; Peer reviewed, 2016)Polymer injection is a widespread strategy in enhanced oil recovery. Polymer increases the water viscosity and creates a more favorable mobility ratio between the injected water and the displaced oil. The computational ... -
Unstructured Voronoi grids conforming to lower-dimensional objects
Berge, Runar Lie; Klemetsdal, Øystein; Lie, Knut-Andreas (Journal article; Peer reviewed, 2018)We present a novel mixed-dimensional method for generating unstructured polyhedral grids that conform to prescribed geometric objects in arbitrary dimensions. Two types of conformity are introduced: (i) control-point ... -
The use of flow diagnostics to rank model ensembles
Watson, Francesca; Krogstad, Stein; Lie, Knut-Andreas (Peer reviewed; Journal article, 2021)Ensembles of geomodels provide an opportunity to investigate a range of parameters and possible operational outcomes for a reservoir. Full-featured dynamic modelling of all ensemble members is often computationally unfeasible, ... -
User Guide to Flow Diagnostics in MRST - Flow Diagnostics Preprocessors for Model Ensembles
Lie, Knut-Andreas; Krogstad, Stein; Watson, Francesca; Borregales Reveron, Manuel Antonio (SINTEF rapport;2020:01131, Research report, 2020)Flow diagnostics are simple quantities that can be derived from basic flow simulations to probe a reservoir model, establish connections and basic volume estimates, and measure heterogeneity in flow paths. This user guide ... -
User Guide to Flow Diagnostics Postprocessing - Simulations in MRST and ECLIPSE Output Format
Lie, Knut-Andreas; Krogstad, Stein; Watson, Francesca (SINTEF rapport;2020:01136, Research report, 2020)Flow diagnostics are simple and controlled numerical flow experiments run to probe a reservoir model, establish connections and basic volume estimates, and measure heterogeneity in flow paths. All these quantities are quick ... -
Using sensitivities and vertical-equilibrium models for parameter estimation of CO2 injection models with application to Sleipner data
Nilsen, Halvor Møll; Krogstad, Stein; Andersen, Odd; Allen, Rebecca; Lie, Knut-Andreas (Journal article; Peer reviewed, 2017)A key part of planning CO2 storage sites is to devise a monitoring strategy with proper modelling support. Herein, we show how a simulation framework that incorporates adjoint-based sensitivities can be combined with ... -
Using simplified methods to explore the impact of parameter uncertainty on CO2 storage estimates with application to the Norwegian Continental Shelf
Allen, Rebecca; Nilsen, Halvor Møll; Lie, Knut-Andreas; Møyner, Olav; Andersen, Odd (Journal article; Peer reviewed, 2018)We use simplified methods to investigate how uncertainty in geological models affects practical CO2 storage capacities in large-scale saline aquifers. Our focus is on uncertainties in top-surface elevation, rock properties ...