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Abstract

Summary

Elastic full waveform inversion (FWI) has the potential to provide a high-resolution velocity model by inverting all wavelengths of the subsurface structures. However, due to the associated computational costs and non-linear coupling between different elastic parameters, it is only applied for low frequencies, especially in a full elastic 3D fashion. Mostly, high-resolution elastic parameter models are only required within the limited area of the earth subsurface. Therefore, high-resolution elastic-FWI for full bandwidth can also be restricted to a target area. With this concept in mind, we present reservoir-oriented joint migration inversion (JMI-res) using both a numerical and a field data example. It first reconstructs the localized elastic data at the reservoir depth (local impulse responses) and then use this as input for elastic-FWI for the area of interest. In addition, the redatuming step of JMI-res correctly account for the overburden-related multiple scattering. Thus, the localized elastic data is of high-resolution and free of overburden artefacts, while avoiding a complete elastic FWI for the whole medium.

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/content/papers/10.3997/2214-4609.202012129
2021-10-18
2024-04-28

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References

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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.202012129
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Target-Oriented Elastic Parameter Models Estimation from Surface Seismic Data Uusing JMI-res
Conference Proceedings 2021, 1 (2021); https://doi.org/10.3997/2214-4609.202012129
/content/papers/10.3997/2214-4609.202012129
/content/papers/10.3997/2214-4609.202012129
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