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Seismic Processing

At DownUnder GeoSolutions we focus on producing accurately processed and imaged

seismic data that is ready for input into amplitude and inversion studies. We have

developed key technologies in coherent and incoherent noise removal, deghosting,

velocity model building, data regularisation, residual moveout and migration to meet

this goal.

DownUnder GeoSolutions has a comprehensive processing toolkit which includes:

DUG Broad - physics-based deghosting

Source signature deconvolution using near-field hydrophone data

DUG Reg - 2D/3D/4D/5D interpolation/regularisation

Different refraction statics packages including MASW

Wavelet-based ground roll removal

DUG LNR - inversion-based linear noise removal

DUG Deblend - shot deblending for simultaneous shooting

3D true-azimuth SRME and IME (interbed multiple elimination)

Wide-azimuth tools including COV (common offset vector) processing

DUG SWaMP - shallow water multiple prediction and removal

Various noise removal programmes

Comprehensive post-migration workflows

We process all types of data: 2D, 3D, 4D, land, marine and OBC. Our largest project to date was 16,000 sq km - a single tomography run over the whole area.

We have state of the art, highly parallel processing codes that take advantage of our supercomputing facilities which utilise the latest in co-processor technology. We have one of the largest commercial supercomputers in the world with over 12 petaflops of compute, 15 petabytes of storage and many hundreds of thousands of cores. This ensures we can deliver large projects with turnaround times faster than you’ve ever imagined.

FIGURE 1 Stack section before and after azimuthal anisotropic moveout correction. This data is from Australia’s southern margin.

*Images are courtesy of Origin Energy Ltd.

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Seismic Processing

FIGURE 3 Shot record before and after application of DUG Deblend .

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Before After

InlineInline CrosslineCrossline

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FIGURE 2 Inline and crossline (1000m offset) before and after 5D regularisation (DUG Reg) .

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Seismic Processing

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FIGURE 5Timeslice through a mid offset (1000m) before and after 5D regularisation (DUG Reg) .

FIGURE 4Shot record before and after linear noise removal (DUG LNR).

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Contact usYou’ll find DownUnder GeoSolutions

at www.dugeo.com. Plus we have

offices in all corners of the world.

Check the website for the location

nearest to you. Or contact our head

office in Perth Australia on

tel +61 8 9287 4100,

email sales@dugeo.com.

Seismic Processing

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FIGURE 7Shot record before and after applying DUG SWaMP.

FIGURE 6Before (left) and after (right) interbed multiple removal using DUG IME.

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