Unconstrained Inversion

Anisotropic unconstrained inversion of the Towed Streamer EM data can be used to determine sub-surface resistivity. PGS extracts the maximum possible information and value from the data before applying any constraints on the solution.
3D and 2.5D inversion alignment
3D unconstrained inversion with 2.5D sections overlain

The unconstrained resistivity section below is ~ 60 km long and was generated by PGS using the MARE2DEM 2.5D inversion code from SCRIPPS.

Resistivity sectino from 2.5D inversionResistivity volume from 3D inversion, generated using MARE2DEM 2.5D inversion code to QC the 2.5D inversion

Barents Sea Southeast

9000 sq. km horizontal resistivity Barents Sea~9000 sq. km horizontal resistivity depth image from the Barents Sea

Peon, North Sea

Peon, North Sea, unconstrained inversion Unconstrained inversion of data acquired over Peon gas field in the North Sea 

Fastnet Basin

Horizontal resistivity down to 5km showing structural conformance with underlying 2D seismic from Fastnet BasinHorizontal resistivity down to 5 km showing structural conformance with underlying 2D seismic from Fastnet Basin