Parallel GPU-based Implementation of One-Way Wave Equation Migration

Authors

  • Alexander L. Pleshkevich Central Geophysical Expedition JSC, Rosgeo
  • Vadim V. Lisitsa Institute of Petroleum Geology and Geophysics SB RAS
  • Dmitry M. Vishnevsky Institute of Petroleum Geology and Geophysics SB RAS
  • Vadim D. Levchenko Keldysh Institute of Applied Mathematics RAS
  • Boris M. Moroz Central Geophysical Expedition JSC, Rosgeo

DOI:

https://doi.org/10.14529/jsfi180304

Abstract

We present an original algorithm for seismic imaging, based on the depth wavefield extrapolation by the  one-way wave equation. Parallel implementation of the algorithm is based on the several levels of parallelism. The input data parallelism allows processing full coverage for some area (up to one square km); thus, data are divided into several subsets and each subset is processed by a single MPI process. The mathematical approach allows dealing with each frequency independently and treating solution layer-by-layer; thus, a set of 2D cross-sections instead of the initial 3D common-offset vector gathers are processed simultaneously. This part of the algorithm is implemented suing GPU. Next, each common-offset vector image can be stacked, processed and stored independently. As a result, we designed and implemented the parallel algorithm based on the use of CPU-GPU architecture which allows computing common-offset vector images using one-way wave equation-based amplitude preserving migration. The algorithm was used to compute seismic images from real seismic land data.

References

Gazdag, J.: Wave equation migration with the phaseshift method. Geophysics 43(7), 1342–1351 (1978), DOI: 10.1190/1.1440899

Pleshkevich, A., Vishnevskiy, D., Lisitsa, V.: Development of pseudospectral amplitudepreserving 3d depth migration. Russian Geophysics (S) 0, 94–101 (2017)

Pleshkevich, A., Vishnevskiy, D., Lisitsa, V.: Explicit additive pseudospectral schemes of wavefield continuation with high-order approximation, pp. 5546–5550 (2017), DOI: 10.1190/segam2017-17633779.1

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Published

2018-11-20

How to Cite

Pleshkevich, A. L., Lisitsa, V. V., Vishnevsky, D. M., Levchenko, V. D., & Moroz, B. M. (2018). Parallel GPU-based Implementation of One-Way Wave Equation Migration. Supercomputing Frontiers and Innovations, 5(3), 34–37. https://doi.org/10.14529/jsfi180304

Issue

Vol. 5 No. 3 (2018)

License

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution-Non Commercial 3.0 License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.