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Olav Møyner

Research Scientist

Olav Møyner

Research Scientist

Olav Møyner
Phone: +47 990 24 949
Department: Mathematics and Cybernetics
Office: Oslo

Publications and responsibilities

Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1717817

Authors Sundal Anja Miri Rohaldin Andersen Odd Hellevang Helge Gregersen Ulrik Olivarius Mette Nielsen Lars Henrik Møyner Olav Baig Irfan Heeremans Michel Lecomte Isabelle Nilsen Halvor Møll Frykman Peter Aagaard Per
Year 2019
Type Conference lecture and academic presentation
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1710251

The fully implicit method is the most commonly used approach to solve black-oil problems in reservoir simulation. The method requires repeated linearization of large nonlinear systems and produces ill-conditioned linear systems. We present a strategy to reduce computational time that relies on two k...

Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1695586

A number of different multiscale methods have been developed as a robust alternative to upscaling and as a means for accelerated reservoir simulation of high-resolution geomodels. In their basic setup, multiscale methods use a restriction operator to construct a reduced system of flow equations on a...

Authors Klemetsdal Øystein Møyner Olav Lie Knut-Andreas
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1695585

Many authors have used higher-order spatial discretizations to reduce numerical diffusion, which can be particularly pronounced when simulating EOR processes involving active chemical substances that are transported by linear or weakly nonlinear waves. Most high-resolution methods reported in the li...

Authors Lie Knut-Andreas Mykkeltvedt Trine Solberg Møyner Olav
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1689900

CO2 storage and hydrocarbon recovery is modelled by mixed hyperbolic-elliptic PDEs, posed on unstructured, polyhedral grids with large aspect ratios. Such models are strongly nonlinear, have a truly multiscale behavior, and contain complex tabulated data or analytic submodels that makes linearizatio...

Authors Møyner Olav
Year 2019
Type Conference lecture and academic presentation
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1689897

Higher-order methods have only been applied to a limited extent in simulation of real petroleum assets. Possible reasons are complex grid formats (unstructured, polyhedral cells, large aspect ratios) and need for implicit time discretization. I this talk, we outline how weighted essentially non-osci...

Authors Klemetsdal Øystein Lie Knut-Andreas Møyner Olav Mykkeltvedt Trine Solberg
Year 2019
Type Conference lecture and academic presentation
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1689896

Many multiscale methods for solving elliptic/parabolic flow equations can be written in operator form using a restriction and a prolongation operator defined over a coarse partition of an underlying fine grid. The restriction operator constructs a reduced system of flow equations on the coarse parti...

Authors Lie Knut-Andreas Møyner Olav Klemetsdal Øystein
Year 2019
Type Conference lecture and academic presentation
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1689890

High-resolution discretizations can be advantageous in compositional simulation to reduce excessive numerical diffusion that tends to mask shocks and fingering effects. In this work, we outline a fully implicit, dynamic, multilevel, high-resolution simulator for compositional problems on unstructure...

Authors Klemetsdal Øystein Møyner Olav Lie Knut-Andreas
Year 2019
Type Part of a book/report
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1680731

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, many of the essential nonlinearities are associated with the transport equation,...

Authors Klemetsdal Øystein Møyner Olav Lie Knut-Andreas
Year 2019
Type Journal publication