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NORSAR (NORwegian Seismic ARray) is an internationally recognized, independent, not-for-profit, research foundation within the field of geo-science providing advanced, innovative products and solutions to customers in the public and private sectors. NORSAR has its headquarters at Kjeller, North- East of Oslo, Norway.

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Seismic modelling methods developed by NORSAR provide value-added services to oil companies, seismic contractors and consultant companies. A software product oriented R&D philosophy ensures short time to market for the results from NORSAR petroleum research activities. Software for seismic modelling and imaging, known under brand names as NORSAR-2D/3D, VelRock and SeisRoX, is made commercial, marketed and sold worldwide by NORSAR’s wholly owned subsidiary NORSAR Innovation AS.


NORSAR 2D/3D ray-tracing

  • Simulation of all kinds of seismic surveys in all kinds of sub-surface models (including VTI/TTI anisotropy)
  • Generation of illumination maps on target level or in shot/receiver domain
  • Studies on expected target fold, simulated migration amplitude, aperture, travel time, angle and offset relationships, and many more
  • Flower plots and interactive illumination ray studies
  • Synthetic seismograms
  • PSDM travel time tables
  • Target based
  • Simulation of shot records and illumination maps
  • Survey planning, interpretation support

SeisRoX local imaging

  • State-of-the-art rock physics modelling technology
  • Fast and flexible 2D/3D PSDM simulation for complex targets and overburden
  • Easy use, based on workflows
  • Consistent with survey, wavelet, overburden and reservoir properties
  • Output of illumination and resolution characteristics (both vertical and lateral resolution)
  • No 1D assumptions and limitations
  • No smoothness requirement as for ray tracing
  • Reservoir based
  • Simulation of optimum PSDM processing result
  • Feasibility and sensitivity studies


  • The link between rock properties and seismics
  • Assessment of 4D signature of a reservoir when considering time-lapse seismic surveys.
  • Fully integrated with the NORSAR-2D and NORSAR-3D software packages, but can also be used as a standalone application
  • Assessment of 4D signature of a reservoir when considering time-lapse seismic surveys.