Rapid, responsive 3D geophysical inversion. Cloud-powered speed and responsiveness make VOXI a powerful tool for visualizing the deep subsurface.

  • The streamlining of the inversion setup, lightning-fast computation speeds you dream about and output displays make VOXI a pleasure to use.

    John Donohue, Carpentaria Exploration
  • I have used a lot of magnetic data all over the world, from far northern Canada to the Equator and south, but the use of 3D voxel inversion modelling was an eye opener.

    Robert Carrington, Colombian Mines
  • The VOXI inversion tools offer a straightforward inversion for gravity gradients, which is not yet a standard in other software packages.

    Dr. Jorg Ebbing, Geological Survey of Norway
  • Detailed surface and subsurface geology, geochemistry, geophysics and the recent 3D modelling using the [VOXI] MVI process has increased confidence in our exploration model.

    Ananda Kathiravelu, Promesa

VOXI Performance Advantages

VOXI provides a solution for large, multi-parameter geophysical inversion modelling that can aid all stages of exploration and is suited for any size of project. It includes advanced inversion techniques that have been proven to increase geophysical model accuracy. On-demand subscription options are available for single, project and team use. 

  • Lightning-fast and intuitive
  • Responsive and reliable
  • Integrated and collaborative

More about VOXI performance advantages

Fast, full featured geophysical inversion modelling

Generate 3D inversions and forward models

Invert geophysical data and create quantitative 3D models of the earth to further understand the structure and processes beneath the surface. Calculate the response of a given physical property of a user defined 3D voxel model with VOXI forward modelling tools. 

Build and constrain models

Use the Model Builder to incorporate supplementary geological, geophysical and geochemical information. Automatically apply these models as constraints to the inversion using Parameter and Gradient reference models; Upper and Lower bounds; Parameter and Gradient weightings; Active Model; and Reweighting Model. The defaults are auto-populated and the math is applied automatically, to make creation of constraints easier and allow more time for interpretation.

Model gravity gradiometry data 

VOXI supports inversion and forward modelling of Gravity Gradiometry Data to yield a detailed 3D model of the rock density. The resulting detailed density model can be used to interpret and to target regions for potential oil, gas and mineral deposits. Generic vertical gravity gradient data is supported as well as direct import of two common data types: Falcon AGG data and Bell Geoscience/ARKeX LM FTG data.

Model frequency domain EM data 

With VOXI you can invert frequency domain horizontal coplanar configuration electromagnetic (EM) data to produce a voxel conductivity model. You can then integrate this conductivity model with your gravity and magnetic inversions into a geophysical or geological interpretation in Oasis montaj. The FDEM inversion is based on 1D inversions interpolated along and between lines, suitable for airborne frequency domain systems such as Dighem or Resolve. 

More about FDEM

Model the 3D magnetization vector

Traditional susceptibility inversions assume that subsurface magnetization is in the direction of Earth’s magnetic field. More often than not, this assumption is false and can yield inaccurate inversion results. Magnetization Vector Inversion (MVI) is a method that solves for both magnitude and direction. The results are not limited by erroneous assumptions and have been shown to coincide more closely with known geology than traditional susceptibility models. 

More about MVI

Sharpen contacts with Iterative Reweighting Inversion Focusing

Iterative Reweighting Inversion Focusing (IRIF) takes a smooth earth model and uses it as a reweighting constraint when running a new inversion of the same data. It is used to model sharper contacts in the inversion result, providing more refined targets. IRIF is automated, saving processing time so that your results are available sooner. 

More about IRI

Model time domain EM data

VOXI Earth Modelling provides a Time Domain Electromagnetic (TDEM) inversion method for modelling subsurface conductivity. The TDEM inversion method supports system configurations consisting of a horizontal transmitter loop and a horizontal receiver mounted at a fixed distance from the transmitter, such as the SkyTEM, Geotech VTEM and NRG Xcite airborne EM systems.

More about TDEM


Model IP and Resistivity data

VOXI supports inversion and forward modelling of IP and resistivity data to yield a detailed 3D model of conductivity and chargeability. The resulting models can be used to interpret and target regions for mineral and environmental applications.

More about IP and Resistivity inversion

Why subscribe to VOXI?

Subscribing to Geosoft software provides a simple and flexible
way to access and manage your essential geoscience tools.


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