Ad Terra Consultancy

Ad Terra Consultancy is a Swiss geoscience & engineering consulting firm and low-carbon energy operator striving to unlock Earth’s boundless energy potential responsibly.

Geophysics: Seismic Processing

5 October 2021

Reflection seismology is commonly recognized as one of the most powerful geophysical methods. Specific exploration targets for Geothermal, Petroleum, Mining or Nuclear Storage industries define unique processing workflow for every acquired seismic dataset. Project complexity, time and budget constrains require accurate selection of service provider and processing parameters for each individual processing project. The projects can have a duration of few days to several months, depending on complexity. Ad Terra offers planning and supervision for 2D, 3D and seismic processing as well as individual processing tests for specific investigations. Teams of geophysicists, geologists and petrophysicists work in synergy to achieve the best seismic image quality. Current projects include:

Seismic processing, project management:

  • Planning of target specific processing workflows and provision of detailed scope of work considering cost efficiency
  • Tender support and contractor selection
  • Technical QC on all stages of the processing and regular data quality reviews with progress reporting to the client

Seismic processing, specific studies:

  • Velocity model building with support of a priory geological data
  • Time-depth and depth-time conversion
  • Demigration/Remigration
  • Rock Property Inversion and Quantitative Interpretation (QI) to improve reservoir understanding

SVSP processing:

  • Rig source VSP processing from field data
  • Sonic log calibration
  • Velocity analysis along the well trajectory
  • Conventional processing with generation of P-wave Synthetic Seismograms and Corridor Stacks
  • Time-depth conversion
  • Seismic-to-well tie in time and depth
  • Detailed processing report with text description, enclosures and high-resolution figures
  • PP/PS processing, forward modelling, multiple analysis
  • Full workflow using VSProwess software

Seismic database management

  • Data load, import and export
  • Integration of seismic, well, interpretation, and GIS data
  • Synchronisation between various software projects – Kingdom, Petrel, Petrosys etc.

  • 3D seismic processing: revision of data quality
  • Rock property inversion on 3D seismic reflection data supported by wells
  • Rig Source VSP processing results
See also

Geothermal: High-resolution 3D modelling

In the global search for renewable and low-emission energies, there is a strong emphasis on geothermal potential and the accurate characterization of known resources.

Maximising Productivity on a Limestone Reservoir

Complex oil and gas fields need innovative technological solutions to maximise productivity. In addition, highly volatile fluid conditions require accurate modelling techniques to evaluate reservoir behaviour under high GOR and predict well production for different scenarios. Hydraulic fractures have been evaluated for a full field model along with other completion designs and presented to the client as part of potential field development options.

Data Base Management

Multi-disciplinary projects involve a large amount of data of various nature that must be securely stored, quality checked and carefully organized to ensure confidentiality and high-quality analyses.

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