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Abstract

Summary

In this paper, we present a high-resolution FWI case study from the foothills of the Southern Carpathians, in Romania. The input data was acquired in 2022, mostly with dynamite source, and designed for optimal subsurface wide azimuthal illumination. The varied rough terrain and the presence of a complex thrust body represent the main imaging challenges. Firstly, we will show how the combination of Multi-Wave Inversion (MWI), and Full-Waveform Inversion (FWI) enabled us to construct a high-resolution near-surface velocity model that solved some important imaging distortions. Next, we will outline the benefit of inverting data to 50Hz to attain a high resolution FWI model which fully captures the strong lateral and vertical velocity contrasts of the upper folded structures and the underlying stratigraphy. Finally, the migrated image and derived reflectivity from this 50Hz FWI model has helped to de-risk the reservoir uncertainties in both size and positioning of the crest. These enhance the imaging to better define the spill point of the prospect.

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/content/papers/10.3997/2214-4609.202310595
2023-06-05
2026-02-12

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/content/papers/10.3997/2214-4609.202310595
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50Hz high resolution land FWI: a case study in the Carpathian foothills
Conference Proceedings 2023, 1 (2023); https://doi.org/10.3997/2214-4609.202310595
/content/papers/10.3997/2214-4609.202310595
/content/papers/10.3997/2214-4609.202310595
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