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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

Guest Speaker(s): Henry Debens

Henry is a Geophysicist working in the Subsurface Technology group at Woodside Energy Ltd. Henry joined Woodside after completing an M.Sci. in geophysics and Ph.D. in petroleum geophysics at Imperial College London. Henry’s work chiefly concerns the development and application of novel approaches to imaging and inversion with seismic data.


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).

Ticket Prices:

Member (Early Bird): $69.00

Concession Member [Retired, Graduate or Hardship] (Early Bird): $59.00

Student Member (Early Bird): $39.00

Non-Member: $99.00

Member (Non-Early Bird): $79.00.

Early bird pricing ends Monday  at 5pm (AWST). All ticket sales close at 5pm Tuesday.

Refund Policy: Refunds are only applicable if notified in writing to prior to the close of ticket sales. Refunds will be issued to all participants in the case that government regulations prevent the event taking place.


Thursday, 10 June, 2021
12:00 pm - 2:00 pm
(Australia/Perth time)
$39.00 – $99.00
Event Categories:
  • Venue

    Pan Pacific Perth
    207 Adelaide Terrace,
    Perth, wa 6000 Australia
    + Google Map
    (08) 9224 7777

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