DownUnder GeoSolutions Products

DownUnder GeoSolutions offer a range of geoscience products and related services backed by an experienced and innovative team. Each product area represents a workflow that incorporates various subsets of services which we can also offer in isolation as required.

• DUG Software
• Quantitative Interpretation
• Seismic Processing and Regularisation
• Velocity Model Building and Depth Migration

Quantitative Interpretation

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Reflection amplitude is related to the elastic properties of rocks. Quantitative amplitude analysis can provide information that helps answer exploration questions and contributes to the integrated risking of prospects. Seismic amplitude measurements provide observed reflectivity data after calibration to well logs. Regional rock property trends enable expected reflectivity to be calculated. Observed reflectivity can be compared with expected reflectivity to predict lithology and fluid content and evaluate amplitude anomalies.

View / Download The Quantitative Interpretation Fact Sheet

Seismic Processing and Regularisation

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DownUnder offers a full 2D/3D time processing service for seismic surveys of any size.

Our toolkit includes all the standard processes such as:

• Navigation Merge
• Tidal Statics
• Wavelet Based Denoise Algorithms
• Trace Interpolation
• Surface Related Multiple Elimination (SRME)
• High Resolution Radon Transform (linear and parabolic)
• Inverse Q
• 3D Binning (including interpolation and various options)
• Interactive Velocity Analysis
• Residual Moveout
• Gain Correction Programs
• Angle Stack Production (using various means including ray tracing based)
• As well as many hundreds of other programs...

View / Download The Seismic Processing Fact Sheet

DUGREG

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DUGREG is a new seismic regularisation workflow devised by Downunder GeoSolutions.

DUGREG utilises the wave equation to downward continue the seismic data to a set datum, then upward continues it back to the surface. The returned, upward continued data has a trace perfectly positioned at the centre of each (inline/crossline/offset) bin. Azimuth and sampling issues are fully accounted for and it is capable of processing both marine and land data. Unlike other programs of this type, ‘leakage’ does not occur in DUGREG.

In practice significant improvements have been obtained using this program as opposed to conventional regularisation approaches.

Velocity Model Building and Depth Migration

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DownUnder offers a comprehensive velocity model building and depth migration service. Migration algorithms and model building tools have been developed by DownUnders R&D staff. Current migration algorithms include:

• amplitude preserving Kirchhoff Depth Migration,
• amplitude preserving Gaussian Beam Migration,
• true amplitude Full waveform Shot Record migrations.

All are able to perform isotropic or anisotropic (VTI) migrations.

DownUnder also have a comprehensive model building toolkit incorporated into a full pre and post stack interpretation package. The toolkit includes a robust and accurate Reflection Grid Tomography. We are able to build both isotropic and anisotropic velocity fields.

View / Download The Petrophysics Fact Sheet