3D CSEM inversion

3D CSEM inversion

3D CSEM inversion is EMGS’s standard tool to reconstruct the subsurface resistivity distribution from the measured CSEM data. The goal of CSEM inversion is to reconstruct a resistivity model that explains the CSEM data and is geologically meaningful.

Our 3D CSEM inversion has been used successfully to image CSEM data acquired in a variety of geological settings such as shallow water, continental slope, deep water and salt basins for a range of E&P applications.

Since 2008 our inversion technology and workflows have undergone continuous development to improve accuracy and reliability as we continue to adapt to new acquisition approaches.

Key features

  • Proven imaging solution for regional exploration, prospect evaluation, reservoir characterization, structural imaging
  • Can account for VTI and TTI anisotropy in the subsurface
  • Use of rigorous CSEM data uncertainty models to assign data weights
  • Powerful Gauss-Newton model update scheme
  • Software developed and maintained by EMGS
  • Applicable to all node-based CSEM acquisition approaches (3D wide-azimuth, 2D)
  • Can integrate seismic and well-log data into imaging workflow
  • Large flexibility for applying different types of regularization and constraints based on gelogical setting and available a priori information
  • SEG-Y deliverables for easy integration with other geophysical and geological data