3D inversion can provide a subsurface 3D resistivity distribution that delineates prospects and reservoirs, and places them accurately, both laterally and in depth. The incorporation of full-azimuth data acquired in 3D grids enhances the spatial resolution and accuracy of the final 3D resistivity model.

 

Troll western oil province, offshore Norway. EM responses (red) match results from well log analysis and seismic outlines.

The 3D inversion results clearly delineate the Troll reservoir, North Sea, and provide the resistivity distribution within the body.

 

Key features

  • Includes transverse isotropy vertical (TIV), anisotropic and isotropic inversion
  • Uses 3D EM data to provide 3D resistivity-depth cubes
  • Uses inline and azimuthal data
  • Can use constraints from external data such as seismic horizons
  • Resistivity models delivered in SEG-Y format for easy integration