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Webinar Summary: Introducing the concepts behind the latest technologies used in seismic imaging



If you are interested in this topic, this is a unique opportunity to learn more about CGG and get in contact with them. CGG is always looking for talented young students (even during these times) and for Mr. Pape it will be a pleasure to answer your question.

Summary

Date: November 11, 2020

Location: Online via Zoom

No. of participants: max. 19


Figure 1: Presentation by Owen Pape (top right) and the participants.


The SPE Student Chapter at the RWTH Aachen University had the pleasure to host the presentation by Owen Pape. Owen is a Recruitment Technical Advisor and Geophysicist at CGG, a French geophysical service company providing services in the field of geology, geophysics and reservoir engineering, and remote sensing to companies primarily within the energy industry (Figure 1).


Owen started his presentation by introducing the application of seismic imaging in the E&P industry and where the key challenges lie, e.g. near-surface velocity anomalies, and complex salt tectonics.


He then explained in an illustrative way the process of Inversion as a cake, where the recipe is known, but not the amounts of each ingredient. The imaging scientist then looks at this cake, adjusts the amounts of ingredients, and tries again until they achieve the perfect cake. Bon appétit!


Three examples of techniques based on inversion that CGG uses were then presented: Full-Waveform Inversion (FWI) to generate high-resolution earth models by minimizing the difference between observed and modeled seismic waveforms; Ghost Wavefield Elimination, to improve the resolution of the seismic data and Least-Squares Migration, which provides images with better-balanced illumination, improved signal-to-noise ratio, reduced migration artifacts, and more interpretable seismic amplitudes.


During Q&A he explained that CGG processes and analyses many different types of data from all over the world and also talked about the impact of the pandemic on the company and the people who make it up. CGG’s business model has proven resilient through the pandemic and they are now recruiting students who graduate in 2021 and genuinely invited the audience, especially geophysicists, to apply at CGG.


On behalf of all students and the SPE Student Chapter of the RWTH Aachen University, we would like to thank Owen for the valuable insights to CGG.


E-Mail: Owen Pape <owen.pape@cgg.com>



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