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PESA WA Technical June lunch talk-Inverting seismic data at hyperscale
Thursday, 10 June, 2021 @ 12:00 pm - 2:00 pm (Australia/Perth time)$39.00 – $99.00
Hosted with thanks to our Platinum Sponsors Business Events Perth:
And our Gold Sponsors DUG, Katalyst Data Management and PetroDip
PESA WA invites you to our technical luncheon on Thursday 10th June
“Inverting seismic data at hyperscale”
Presented by Henry Debens
Building multi-parameter models of subsurface properties for seismic imaging typically requires that the seismic data undergo a series of processing steps that take several months to execute and involve several subjective decisions to be made by the processing practitioner. Wave-equation-based methods such as full-waveform inversion (FWI), which seek to reproduce the data in their raw form, eliminate the need for this processing sequence prior to velocity model building and may eventually eliminate the need for this processing sequence all together. The use of gradient-based methods like FWI for multi-parameter model building introduces additional challenges, however, such has how to deal with crosstalk between parameters and how to scale updates to parameters to which the data have differing sensitivities. One approach that can help to mitigate these challenges is to consider a semi-global approach to FWI. A limitation of this approach is that it requires significant computational resources when deployed over large areas. Public cloud high-performance compute (HPC) provides the necessary resources to make semi-global FWI practical while access to excess capacity markets provides the means to make semi-global FWI affordable. In this presentation, we demonstrate the application of semi-global FWI to recover a low-wavenumber anisotropic acoustic velocity model from more than 3200 km2 of surface seismic data from the Bonaparte Basin, offshore Australia. This workload was executed using public cloud HPC and, in doing so, consumed in parallel more than one million logical cores.
Above: Graphic representation of the equivalent number of laptops used simultaneously during the inversion process (sourced from LinkedIn).
Member (Early Bird): $69.00
Concession Member [Retired, Graduate or Hardship] (Early Bird): $59.00
Student Member (Early Bird): $39.00
Member (Non-Early Bird): $79.00.
Early bird pricing ends Monday at 5pm (AWST). All ticket sales close at 5pm Tuesday.