3D seismic modeling and reverse‐time migration with the parallel Fourier method using non‐blocking collective communications

2009 ◽  
Author(s):  
Chunlei Chu ◽  
Paul L. Stoffa ◽  
Roustam Seif
Keyword(s):  
Fourier Method ◽  
3D Seismic ◽  
Seismic Modeling ◽  
Reverse Time ◽  
Reverse Time Migration ◽  
Time Migration ◽  
Collective Communications

scholarly journals 3D Seismic Imaging through Reverse-Time Migration on Homogeneous and Heterogeneous Multi-Core Processors

2009 ◽  
Vol 17 (1-2) ◽  
pp. 185-198 ◽  
Author(s):  
Mauricio Araya-Polo ◽  
Félix Rubio ◽  
Raúl de la Cruz ◽  
Mauricio Hanzich ◽  
José María Cela ◽  
...  
Keyword(s):  
Oil And Gas ◽  
State Of The Art ◽  
Memory Bandwidth ◽  
3D Seismic ◽  
Computational Power ◽  
Reverse Time ◽  
Reverse Time Migration ◽  
Time Migration ◽  
Computational Kernel ◽  
Oil And Gas Companies

Reverse-Time Migration (RTM) is a state-of-the-art technique in seismic acoustic imaging, because of the quality and integrity of the images it provides. Oil and gas companies trust RTM with crucial decisions on multi-million-dollar drilling investments. But RTM requires vastly more computational power than its predecessor techniques, and this has somewhat hindered its practical success. On the other hand, despite multi-core architectures promise to deliver unprecedented computational power, little attention has been devoted to mapping efficiently RTM to multi-cores. In this paper, we present a mapping of the RTM computational kernel to the IBM Cell/B.E. processor that reaches close-to-optimal performance. The kernel proves to be memory-bound and it achieves a 98% utilization of the peak memory bandwidth. Our Cell/B.E. implementation outperforms a traditional processor (PowerPC 970MP) in terms of performance (with an 15.0× speedup) and energy-efficiency (with a 10.0× increase in the GFlops/W delivered). Also, it is the fastest RTM implementation available to the best of our knowledge. These results increase the practical usability of RTM. Also, the RTM-Cell/B.E. combination proves to be a strong competitor in the seismic arena.

Fast seismic modeling and reverse time migration on a graphics processing unit cluster

2011 ◽  
Vol 24 (7) ◽  
pp. 739-750 ◽  
Author(s):  
Rached Abdelkhalek ◽  
Henri Calandra ◽  
Olivier Coulaud ◽  
Guillaume Latu ◽  
Jean Roman
Keyword(s):  
Graphics Processing Unit ◽  
Processing Unit ◽  
Seismic Modeling ◽  
Reverse Time ◽  
Reverse Time Migration ◽  
Time Migration ◽  
Graphics Processing

scholarly journals Fast seismic modeling and Reverse Time Migration on a GPU cluster

2009 ◽  
Author(s):  
Rached Abdelkhalek ◽  
Henri Calandra ◽  
Olivier Coulaud ◽  
Jean Roman ◽  
Guillaume Latu
Keyword(s):  
Seismic Modeling ◽  
Reverse Time ◽  
Reverse Time Migration ◽  
Gpu Cluster ◽  
Time Migration

Staining algorithm for seismic modeling and migration

Geophysics ◽  
2014 ◽  
Vol 79 (4) ◽  
pp. S121-S129 ◽  
Author(s):  
Bo Chen ◽  
Xiaofeng Jia
Keyword(s):  
Signal To Noise Ratio ◽  
Seismic Modeling ◽  
Target Structure ◽  
Reverse Time ◽  
Reverse Time Migration ◽  
Target Region ◽  
Seismic Migration ◽  
The Real ◽  
Time Migration ◽  
And Migration

In seismic migration, some structures such as those in subsalt shadow zones are not imaged well. The signal in these areas may be even weaker than the artifacts elsewhere. We evaluated a method to significantly improve the signal-to-noise ratio (S/N) in poorly illuminated areas of the model. We constructed a “phantom” wavefield: an extension of the wavefield to the complex domain. The imaginary wavefield was synchronized with the real wavefield, but it contained only the events relevant to a target region of the model, which was specified using a staining algorithm. The real wavefield interacted with the entire model. However, all structures except for the target were transparent to the imaginary wavefield, which is excited only when the real wavefront arrives at the target structure. The real and the imaginary source wavefields were crosscorrelated with the regular receiver wavefield. The results were revealed in two images: the conventional reverse time migration image and an image of the target region only. Synthetic experiments showed that the S/N of the target structures was improved significantly, with other structures effectively muted.

3D seismic reverse time migration on GPGPU

2013 ◽  
Vol 59 ◽  
pp. 17-23 ◽  
Author(s):  
Guofeng Liu ◽  
Yaning Liu ◽  
Li Ren ◽  
Xiaohong Meng
Keyword(s):  
3D Seismic ◽  
Reverse Time ◽  
Reverse Time Migration ◽  
Time Migration
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