In 2.5D inversion, the modelled resistivity is allowed to vary vertically and horizontally inline with the receivers, but it is made constant in the horizontal plane at 90° to the inline direction. This greatly reduces the processing time for a fast, yet robust, method of providing subsurface resistivity depth sections along 2D EM lines. The resultant resistivity model provides invaluable information on high-resistivity anomalies, an indicator of the presence of hydrocarbons.
The complementary nature of seismic and CSEM data is exploited by incorporating seismic horizons in the inversion.
Key features
- Produces rapid and robust results, including 2D resistivity depth sections
- Includes transverse isotropy vertical (TIV), anisotropic and isotropic inversion
- Can integrate seismic horizons
- Resistivity models delivered in SEG-Y format for easy integration
