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# Multiscale Modelling The rational way of resolving fine scales in challenging industrial problem s - PowerPoint PPT Presentation

Geomodels. X-component of velocity base functions in 2D. Industrial benchmark in reservoir simulation: 10 th SPE Comparative Solution Project. Multiscale Modelling The rational way of resolving fine scales in challenging industrial problem s. Example: Reservoir simulation. Problem:

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Presentation Transcript

X-component of velocity base functions in 2D

Industrial benchmark in reservoir simulation:

10th SPE Comparative Solution Project

Multiscale ModellingThe rational way of resolving fine scales in challenging industrial problems

Example: Reservoir simulation

Problem:

• physical problems often involve many scales

• details on all scalesimpact large-scale behaviour of the system

In industry – homogenisation/upscaling:

• fine-scale represented as effective parameters on coarse grids

• not always sufficiently robust

• bottleneck in the workflow

Our approach – multiscale simulation

• mixed multiscale finite element methods

• subscale information incorporated through base functions computed numerically on local subgrid

• global system solved on coarse grid

• natural scalability and parallelism

• very flexible with respect to geometry of grid-blocks

Upscaled permeabilities

Multiscale solution

• Strategic Institute Project:

• GeoScale: Establish a mathematical and numerical technology

• that facilitates reservoir simulation on full-scale 3D geomodels.

• 2004-2007, 12 million NOK

• Partners: SINTEF and UiB

• Collaboration with two national Centres of Excellence (CMA, Oslo and CIPR, Bergen), Statoil, and Schlumberger

• http://www.math.sintef.no/GeoScale/

• Contact: [email protected] / +47 22 06 77 10