TY - GEN
T1 - Migration, with implicit solvers for the time-harmonic helmholtz equation
AU - Erlangga, Y. A.
PY - 2009/1/1
Y1 - 2009/1/1
N2 - In the frequency-domain migration, the main bottleneck thus far, which renders its full implementation to large scale problems, is the lack of efficient solvers for computing wavefields. Robust direct methods easily run into excessive memory requirements as the size of the problem increases. On the other hand, iterative methods, which are less demanding in terms of memory, suffered from lack of convergence. During the past years, however, progress has been made in the development of an efficient iterative method for the frequency-domain wavefield computations. In this paper, we will show the significance of this method (called MKMG) in the context of the frequency-domain migration, where multi-shot-frequency wavefields (of order of 10,000 related wavefields) need to be computed.
AB - In the frequency-domain migration, the main bottleneck thus far, which renders its full implementation to large scale problems, is the lack of efficient solvers for computing wavefields. Robust direct methods easily run into excessive memory requirements as the size of the problem increases. On the other hand, iterative methods, which are less demanding in terms of memory, suffered from lack of convergence. During the past years, however, progress has been made in the development of an efficient iterative method for the frequency-domain wavefield computations. In this paper, we will show the significance of this method (called MKMG) in the context of the frequency-domain migration, where multi-shot-frequency wavefields (of order of 10,000 related wavefields) need to be computed.
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M3 - Conference contribution
AN - SCOPUS:77149122421
SN - 9781615672363
T3 - 71st European Association of Geoscientists and Engineers Conference and Exhibition 2009: Balancing Global Resources. Incorporating SPE EUROPEC 2009
SP - 2021
EP - 2025
BT - 71st European Association of Geoscientists and Engineers Conference and Exhibition 2009
PB - Society of Petroleum Engineers
T2 - 71st European Association of Geoscientists and Engineers Conference and Exhibition 2009
Y2 - 8 June 2009 through 11 June 2009
ER -