SINTEF ICT

1
Multiscale ModellingThe rational way of
resolving fine scales in challenging industrial
problems

• Problem
• physical problems often involve many scales
• details on all scales impact 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

Example Reservoir simulation
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 Knut-Andreas.Lie_at_sintef.no / 47 22 06
  77 10