TEM Data processing

Geological evidence available for survey areas is collected and reviewed to forward the information to operators before they start the field work. The knowledge of local geology and sediment deformation helps the TEM system operators to pick changes in the geological conditions during recording. Then, the acquired geoelectric information is used to update the geological model of the area.

Use of optimized resistivity tomography surveys to acquire field data as well as maximize the quality of the resulting tomographic image.

The electrical resistivity imaging technique is extensively used to characterise the diverse resistivity values within the subsurface in geotechnical, geological, hydrogeological, landfill and downhole logging investigations. The basic principle includes injecting a direct current (I) into the ground using a voltmeter and current electrodes. As this current moves through the subsurface, it is resisted and conducted by the subsurface material, as the corresponding potential electrodes receive electrical potential at the surface.

Tomography surveys

MT and AMT Data processing

New and Robust processing of magnetotelluric data in the AMT dead band using the continuous wavelet transform

methodology for the acquisition and processing of audio-magnetotelluric (AMT) data in the AMT dead band

Aspects of detectability, comparison to modeled results (1D, 2D and 3D), and resolution of known structure both horizontal and vertical, comparison with logged resistivities in a constrained and unconstrained sense are analyzed

Resistivity inverse modeling (1D, 2D & 3D)

Gravity data processing and analysis

Essentially, a local change in a gravity field is interpreted as resulting from density variations in the basic model. The genesis of these variations could be structure related such as fault zones, crack density, rock porosity or perhaps associated with a temperature field.

Gravity is a commonly employed geophysical tool for prospecting unknown geothermal reservoirs and monitoring reservoir changes during exploitation, as well as understanding ore bodies. During the exploration stage of geothermal development, gravity results are beneficial in delineating geological structures.

The Gravity method is utilised to understand the subsurface structures that control the placement of heat sources and thermal fluid flow in geothermal systems and ore bodies in mineral exploration.

Our services include gravity data processing, data reduction and Bouguer density estimation, and inverse modelling.

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