Pseudospectral 3-D Migration of Common-Offset Vector Gathers – Highly Parallel Algorithm

V. Lisitsa; A. Pleshkevich; D. Vishnevskiy; V. Levchenko; B. Moroz

doi:10.3997/2214-4609.201801345

Pseudospectral 3-D Migration of Common-Offset Vector Gathers – Highly Parallel Algorithm
Authors V. Lisitsa¹, A. Pleshkevich², D. Vishnevskiy¹, V. Levchenko³, B. Moroz²
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Affiliations: ¹ Institute of Petroleum Geology and Geophysics ² Central Geophysical Expedition JSC of Rosgeo ³ Keldysh Institute of Applied Mathematics
Publisher: European Association of Geoscientists & Engineers
Source: Conference Proceedings, 80th EAGE Conference and Exhibition 2018, Jun 2018, Volume 2018, p.1 - 5
DOI: https://doi.org/10.3997/2214-4609.201801345

Abstract

Summary

We present an original parallel algorithm for pre-stack migration based on the simultaneous solution of one-way wave equation (OWE) with multiple right-hand sides by means of the pseudospectral method. Presented approach allows us to migrate common-offset vector gathers by OWE migration. The algorithm implies multi-level of parallelism with the OWE is solved on GPU (one GPU for each subset of right-hand sides), images are constructed on CPU and stored in RAM (one cluster node for each image). Thus the algorithm the same functionality as modern Kirchhoff-based approaches but higher resolution and ability to deal with complex models. In contrary with RTM-like procedures, our approach allows constructing common-offset vector seismic images directly.

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2018-06-11

2024-04-23

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References

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PleshkevichA., VishnevskyD., LicitsaV.
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Pseudospectral 3-D Migration of Common-Offset Vector Gathers – Highly Parallel Algorithm

Conference Proceedings 2018, 1 (2018); https://doi.org/10.3997/2214-4609.201801345

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Pseudospectral 3-D Migration of Common-Offset Vector Gathers – Highly Parallel Algorithm

Abstract

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Most Read This Month

Most Cited This Month Most Cited RSS feed

The natural combination of full and image‐based waveform inversion

Poststack diffraction imaging using reverse‐time migration

Characterizing the effect of elastic interactions on the effective elastic properties of porous, cracked rocks

Fracture detection by Gaussian beam imaging of seismic data and image spectrum analysis

Laboratory measurements of guided‐wave propagation within a fluid‐saturated fracture