The core application for NORSAR seismic modelling packages is 2D and 3D seismic ray modelling, survey planning, PSDM simulation, reservoir analysis and time-to-depth conversion based on ray tracing.

The NORSAR Software Suite (NSS) is an advanced ray-based seismic forward modelling software tool. Ray-tracing is the most efficient and flexible approach to model and analyze seismic wave propagation through complex subsurface models, and our advanced toolset allows the use of the NORSAR Software Suite in a wide range of applications to reduce risk, and optimize efficiency in all facets of seismic operations. Many of these applications are only otherwise possible through much more lengthy and costly processes.

The NORSAR Software Suite is the most advanced product on the market for seismic illumination studies and model-based survey evaluation and analysis.

Unique concepts

NORSAR software solutions contain a number of unique concepts developed through longstanding, close cooperations, not only with our clients, but a large number of academic institutions, as well as our very own NORSAR research foundation.

Some examples of unique to NORSAR concepts:

  • NORSAR have developed a 3D model representation technique, called the Open Ray Model which gives flexible modelling possibilities with minor restrictions on the model completeness. For example, it is possible to perform seismic ray tracing immediately in a preliminary or incomplete depth model, i.e. interfaces may have holes or other undefined areas.
  • The Wavefront construction technique, invented and developed at NORSAR, ensures that all calculated rays are consistent in the Open Ray Model. Rays traveling through the incomplete or inconsistent parts of the model are rejected.
  • The SimPLITM approach allows simulating a PSDM image in a fast, flexible and robust way. The method is developed and patented by NORSAR. Using the SimPLI technique the total illumination and resolution effects of the acquisition geometry and overburden is taken into account to do a kind of 3D convolution to simulate a PSDM image. This allows an interpreter to rapidly analyze the dynamic reservoir model in terms of seismic response, i.e. PSDM images.

Modelling Package

Platform Highlights:

  • Fully integrated system for advanced 2D/3D ray modelling, Kirchhoff modelling, rock conversion, and fast track PSDM simulation, running on both Windows and Linux.
  • Flexible, multi-level model building: use semi-automatic model builders for simple cases and an advanced model builder for complex projects. Convert any geologic scenario into a representative sub-surface model. 
  • Advanced ray modelling through wavefront construction, supporting multi-pathing, phase conversions, multiples, etc...
  • Flexible illumination mapping, handling land, marine, and VSP surveys. Mapping supports attribute filtering, areal filtering, multi-mapping, map combining, as well as target and survey domain analysis. 
  • Simulates seismic data from both classic ray tracing and Kirchhoff modelling (pre-stack and migrated) as well as fast-track PSDM simulation using patented 3D convolution technology.