| Instructor: | Sylvain Masclet, Geophysicist |
|---|---|
| Duration: | 30 min + Q&A |
| Discipline: | Multi-Wave Inversion & Full Waveform Inversion |
| Main topics: | Velocity model building in the challenging south of Oman region |
| Language: | English |
Request this Webinar Overview of all scheduled webinars Read Paper in EarthDoc Watch E-Lecture
Attending webinars and access to recent EarthDoc material is free of charge for EAGE members, join here.Description
With a shallow anhydrite layer, strong multiples and converted wave contamination, Southern Oman represents a technical challenge for land velocity model building and imaging. While acoustic land full-waveform inversion (FWI) has proved successful on new broadband datasets in Northern Oman, no successful application has been reported for Southern Oman. We show here that the challenge of acoustic FWI in South Oman can be overcome using a dedicated workflow combining Multi-Wave Inversion (MWI) and multi-Dimensional Optimal Transport FWI (multiD OT-FWI). The key component of the workflow is the very near surface characterization provided by surface wave dispersion curves, which allows delineation of the Rus layer in the initial FWI model. MultiD OT-FWI is then used to mitigate amplitude issues in the presence of short period multiples and reduce cycle skipping beyond the depth of penetration of diving waves.About the Lecturer
Sylvain Masclet
Geophysicist with CGG since 12 years
My technical experience:
2 years in Mexico: working on complex sub-salt imaging in GOM context
4 years in Brazil: working on imaging pre-salt targets with challenging salt & carbonates overburden
6 years in Massy: working on land imaging, especially in Oman and more recently moving back to marine and more specifically on Hybrid Node/Streamer acquisition