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Onboard QC and Data Processing
Polarcus Geophysical Toolbox : RTQC and Advanced Fast Track
Purpose
To fully QC seismic data in real-time during acquisition and to carry out an advanced Fast Track processing sequence
onboard, including de-ghosting, heavy de-multiple (e.g. 3D SRME), amplitude regularization and Pre-Stack KTM. Polarcus,
in co-operation with DownUnder GeoSolutions (“DUG”), has invested in advanced onboard hardware which utilizes the
innovative computing power of PHI co-processor clusters together with traditional Intel Xeon cores – up to 170 TFLOPS
per vessel. The data processing software solution is developed by DUG, based on the DUG Insight package, and tailored to
suit Polarcus’ onboard processing needs.
Benefits
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Full data QC on the fly, along with advanced onboard Fast Track processing
Instant updates of all real-time QC products and attributes within the shot point interval in time
Highly interactive and intuitive processing software allowing efficient testing of parameters
Versatile views including 3D representation, integrating interpretation-based techniques in onboard processing
High processing power allowing testing and running of heavy processing steps within tight project time limits
24/7/365 support provided by DUG ensures that processing projects run smoothly onboard Polarcus vessels
Three levels of support including high grade geophysical expert advice when necessary
Onboard Fast Track processing closer to onshore processing standards
Field Example
The processing software has a variety of QC displays, covering full source sensor QC, seismic amplitude analysis and
noise analysis, which is updated on the fly within one record length.
Below are examples of QC displays. The first image (A) shows one line QC 2D PreSKTM after de-noise, de-multiple
(2D SRME + Hi-Res RADON) and DUG BroadTM de-ghosting. These QC products are delivered within 12 hours of the
end of line including interactive parameter testing and model building. (B) Shows the near trace for each gun/streamer
combination. (C) Shows the source QC real time displays, including NFH peak amplitudes, onset times, bubble periods,
raw NFH displays and source amplitude comparison graph.
(A) 2D PreSKTM
(B) Near trace QC display
(C) Source QC real time displays
Impact on EHSQ
Authentic Real-Time, full scale, onboard QC allows rapid identification and resolution of any possible problems before they
escalate. This has a number of positive impacts including enhanced product quality and improved survey efficiency.
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