Seismic Soundoff23 Heinä 2025

From Differences to Inversion: A New Era for 4D Seismic

“Repeatability is the biggest hurdle in time-lapse monitoring, but it’s also where the opportunity lies. 4D FWI can help address those repeatability challenges.” On this episode, Andrew Geary sits down with Madhav Vyas and Kris Innanen, guest editors for July’s The Leading Edge special section on 4D full-waveform inversion. They explain how 4D FWI goes beyond traditional differencing by fully inverting wavefields, making time-lapse seismic more robust against survey inconsistencies and complex overburden. Listeners will learn why now is the perfect time to adopt 4D FWI, the main technical hurdles around repeatability and uncertainty, and the first steps to take for reservoir monitoring and survey design. KEY TAKEAWAYS > 4D FWI inverts the full wavefield - reflections, refractions, diving waves, multiples - to detect reservoir changes, making it more robust than conventional 4D processing. > Repeatability of surveys and assessing uncertainty are the biggest challenges, but workflows like hypothesis testing, batch FWI, and null-space shuttling help mitigate inversion noise. > High-quality data and accurate physics (elasticity, attenuation, anisotropy) are essential; advances in GPU-driven computation enable faster iterations and richer uncertainty analysis. CALL TO ACTION Read July's The Leading Edge special section on 4D FWI at https://library.seg.org/toc/leedff/44/7, then explore an open-source FWI toolbox. LINKS * Visit https://seg.org/podcasts/episode-265-from-differences-to-inversion-a-new-era-for-4d-seismic for the complete show notes.

Tämä jakso on lisätty Podme-palveluun avoimen RSS-syötteen kautta eikä se ole Podmen omaa tuotantoa. Siksi jakso saattaa sisältää mainontaa.

Jaksot(307)

Why SEG Is Building a Home for Mining Geophysics

"That’s what we’re trying to achieve with this forum: bringing all the people together with different backgrounds and create this community, which I don’t think fully exists right now.” Jiajia Sun an...

18 Kesä 30min

The Human Side of Volcano Monitoring

"I feel like we are making a change in the way that people now see the volcanoes and see the earthquakes in El Salvador. So in that sense, I think we are making a a big change.” Adonay Martinez Coto ...

11 Kesä 33min

How Geophysics Connects Curiosity, Science, and Career Opportunity

“If you're curious about geophysics, there's definitely a place in geophysics for you. The field is so interdisciplinary.” Johanna Villagomez joins Andrew Geary to share how curiosity, fieldwork, stu...

4 Kesä 23min

What Geophysicists Gain by Attending URTeC

"Integration, literally, that's why the URTeC is successful.” Marianne Rauch joins Andrew Geary to explain why URTeC 2026 matters for geophysicists who want their work to shape real field decisions. ...

21 Touko 25min

Why Geophysicists Are Paying More Attention to Groundwater

“The concept of mapping the aquifer from the sky, that’s gigantic. It could change how aquifers are managed around the world.” Seogi Kang and Mike Wilt explain why groundwater is becoming one of the ...

14 Touko 28min

The Hidden Opportunity in Critical Minerals That Geophysicists Can’t Ignore

“We all realize that we need a lot more mineral resources in the next two decades. And we realized that geophysics can play a critical role.” Sarah Devriese and Jiajia Sun explain why demand for crit...

7 Touko 26min

OTC 2026 Emerging Leaders on the Future of Offshore Energy Collaboration

“Nothing can happen in a vacuum anymore. We need to have the developers talking to the geoscientists, talking to the environmental professionals.” Two OTC 2026 Emerging Leaders share why the future o...

23 Huhti 28min

Why Seismic Acquisition Is Making a Quiet Comeback

"What has happened in the last few years is exploration overall has taken a little bit of a backseat. So they are starting to relook at seismic acquisition to explore new areas and solve more complex ...

16 Huhti 27min