Joint Migration Inversion for Laterally Varying Media

Hammad, Hussain I.; Verschuur, D.J.

doi:10.3997/2214-4609.201600837

Cited by 8 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the conventional one-way wave operator used in FWM, such as Phase Shift or Phase Shift Plus Interpolation (PSPI) Migration, has limitations when dealing with strongly inhomogeneous media due to its global velocity approximation (Gazdag and Sguazzero, 1984). To address this, local velocity-based one-way operators have been proposed, which calculate a local homogeneous solution for the velocity at each grid node and can accommodate arbitrarily variant velocity media (Kosloff and Kessler, 1987;Grimbergen et al, 1998;Hammad and Verschuur, 2016;Li and Liu, 2021). In this study, we integrated the one-way wave operator based on eigen decomposition (ED) into the FWMod and FWM framework to make it better suited for heterogeneous media, resulting in improved imaging amplitude and accelerated converage speed.…”

Section: Introductionmentioning

confidence: 99%

Full wavefield migration based on eigen-decomposition propagation operators

Verschuur

Abolhassani

2023

84th EAGE Annual Conference &Amp; Exhibition

View full text Add to dashboard Cite

Seismic imaging is crucial for subsurface exploration and monitoring, with a focus on deep and complex structures. Seismic wave migration solves the wave equation, and an accurate propagator is essential. Full Wavefield Modeling (FWMod) was developed based on recursive and iterative up/down wavefield propagation, modeling both primaries and multiples. Embedded within Full Wavefield Migration (FWM) it can be used to image data including multiples, resulting in better illumination in case primary illumination is not sufficient. FWM can be efficient and effective, but conventional one-way wave operators, such as Phase Shift Plus Interpolation Migration, have limitations in strongly inhomogeneous media. Local velocity-based one-way operator based on eigen decomposition was proposed and integrated within FWMod and FWM in this study, improving image amplitudes and fidelity and improving converage speed in the least-squares inversion process.

show abstract

Section: Introductionmentioning

confidence: 99%

Full wavefield migration based on eigen-decomposition propagation operators

Verschuur

Abolhassani

2023

84th EAGE Annual Conference &Amp; Exhibition

View full text Add to dashboard Cite

show abstract

“…Hammad and Verschuur (2016a) have implemented full wavefield modeling for homogeneous media and have also shown the transfer operators for such media (Hammad and Verschuur, 2016b). They have also shown propagation operators and compared them to the ones obtained for locally inhomogeneous media.…”

Section: Introductionmentioning

confidence: 99%

Augmented Full Wavefield Modeling - An Iterative Directional Modeling Scheme for Inhomogeneous Media

Hammad¹,

Verschuur²

2017

Proceedings

Self Cite

View full text Add to dashboard Cite

SummaryWe derive a representation theorem for modeling directional wavefields using reciprocity theorem of the convolution-type. A Neumann series expansion of the representation yields a series that is similar to that of Bremmer. A generalized Neumann series is also derived similar to that used for solving the non-directional Lippmann-Schwinger representation. An example shows how the series can model each scattering order separately for inhomogeneous media. This could potentially be useful in imaging and inverse problems.

show abstract