Duration: 3 Days

This course is an extension of the NORSAR-3D introductory course. It is specially designed for...

  • Users with limited experience who want to refresh or extend their knowledge
  • Attendees of the introductory course who want to bridge the gap between training level and professional project requirements
  • Users who need more routine and are interested in some tips and tricks to do their professional work more efficiently
  • Users who wish to have better control on work flows or a head start for their own learning by doing process

The main motivation for developing this course was…

  • to provide a way to repeat some key information (without redoing the full introductory course and without losing too much time for the basics)
  • to bridge the gap between a controlled training situation with nicely prepared data and the advanced requirements for a real-life project
  • to gain in-depth understanding of pre-processing and modeling parameters and to learn how to tune them
  • to learn about potential pitfalls and possible workarounds

It is not necessarily essential to have completed the NORSAR-3D Introductory course in order to follow this modular course. However, the ideal course attendee should at least have reached the user level of the introductory course, i.e.:

  • being aware of the principle features and use of NORSAR-3D
  • being aware of NORSAR-3D structure (including its tool-box character, principle menus, mouse functions, and NORSAR-3D model structure)
  • being aware of the principle work flow from data import to illumination maps
  • having used the software before, at least on introductory level

Course concept and data
This course has a modular structure. Though all modules can be worked through independently, Module 1 - Module 5 build on each other. If one of these modules is skipped or only briefly considered, prepared sample course projects are available, which can be used as a starting point. The following modules are currently available:

  • Introduction: Integration between different NORSAR software types and modelling approaches
  • Case example for IRAY modelling (fast-track pre-study in comparison with illumination maps)
  • Module 1: General project organization
  • Module 2: Pre-processing of interfaces
  • Module 3: Model structure and blocking
  • Module 4: Physical properties
  • Module 5: Ray tracing parameters and ray codes
  • Module 6: Generating iso-surfaces from velocity cubes
  • Module 7: Attenuation and anisotropy (TTI for P- and S-waves)
  • Module 8: 3D models from 2D lines
  • Module 9: Kirchhoff pre-stack modelling and migration

In contrast to the NORSAR-3D introductory course, there are no click-by-click instructions for each working step. Since it is assumed that the user already knows the right tools (or at least knows the structure of NORSAR-3D well enough to find them easily), instructions focus on a suggested work flow with additional tips and tricks.

In general, there is no unique sample solution to the tasks presented here. The "best" filter, model, or approach always depends on the characteristics of the data at hand and on the primary questions the modeling is supposed to answer. Alternative ways of using NORSAR-3D are in most cases possible and can optionally be discussed with course instructor and other course attendees. A final project with one possible sample solution is provided on the course, as well as a course manual and course data.