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Frequency-domain migration

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Proceedings Papers

Paper presented at the 1983 SEG Annual Meeting, September 11–15, 1983
Paper Number: SEG-1983-0395
... to Frequency-Domain Migration R. E. DuBroff, Phillips Petroleum There are two main points in this report. The first is a definition of migration as a process of finding surfaces upon which boundary conditions are satisfied. The second main point is that the process of finding these surfaces can be done...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 1979
Paper Number: OTC-3659-MS
... concentrated on finite difference techniques. Now, however, the approach to migration based on the frequency domain has become a viable alternative. This is founded on the wave equation, and so includes diffractions and other effects. This paper seeks to motivate and illuminate frequency domain migration using...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 1979
Paper Number: OTC-3660-MS
... migration plane plane abcd three-dimensional migration upstream oil & gas fourier transform diffracted plane abcd perpendicular modeling technique frequency domain migration reservoir characterization modeling & simulation two-dome model migrated plane seismic line...
Proceedings Papers

Paper presented at the 2011 SEG Annual Meeting, September 18–23, 2011
Paper Number: SEG-2011-3419
... ABSTRACT Many researches based on wavefield separating migration techniques have been suggested for processing multi-component data properly. Those works were carried out in the time domain, however. In this paper, we propose the frequency-domain migration technique with wavefield separation...
Proceedings Papers

Paper presented at the 2009 SEG Annual Meeting, October 25–30, 2009
Paper Number: SEG-2009-2814
... enhances inversion results in frequency-domain waveform inversion (Shin et al., 2007), which is one of the advantages of frequency-domain waveform inversion. We propose to use the source wavelet estimated by an inversion algorithm in reverse-time migration. The estimated source wavelet is used when we...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1566
... Summary The frequency sampling of frequency-domain reverse-time migration is defined by the Nyquist-Shannon theorem. An integration (summation) of the images over all frequencies during imaging condition corresponds to zero-lag cross-correlation in the time domain. We propose a method...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215854
... reverse time migration (RTM) with the rough topography have been proposed in the time domain. Compared with the time-domain seismic imaging methods, the frequency-domain seismic imaging methods provide more straightforward estimation of model parameters and direct implementation of multiple sources. Here...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17685570
... : 53rd Annual International Meeting, SEG, Expanded Abstracts , 382 – 385 , 10.1190/1.1893867 . Frequency-domain reverse-time migration using generalized multiscale forward modeling Yongchae Cho*, Richard L. Gibson Jr., and Shubin Fu, Texas A&M University SUMMARY Reverse time migration (RTM...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5909496
...Frequency domain least-squares reverse time migration with a modified scattering-integral approach Jizhong Yang*, Yuzhu Liu and Liangguo Dong, State Key Laboratory of Marine Geology, Tongji University Summary Least-squares reverse time migration (LSRTM) is an iterative inversion-based imaging...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1641
..., flexibility and accuracy. For areas of complex subsurface geology, the reverse time migration (RTM) is the preferred option. Here we propose a new RTM procedure in the frequency domain for the DPW data. For the DPW in the frequency domain, the shot gathers are fully decomposed from shots, receivers and time...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0132
... migration artifacts while still keep reasonable efficiency. crosswell rtm imaging wavefield artifact frequency-domain crosswell reverse time migration geophysics migration seismic data seg houston 2013 reservoir characterization annual international meeting upstream oil & gas wave...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-0531
... in the wavefield. Thus, we consider the application of the logarithm and the L 1 -norm to wavefields, as several earlier studies on waveform inversion applied the logarithm and the L 1 -norm to the objective functions. In this study, we propose an algorithm for frequency-domain reverse time migration using...
Proceedings Papers

Paper presented at the 2011 SEG Annual Meeting, September 18–23, 2011
Paper Number: SEG-2011-3169
... of the objective function. For this reason, the L, 1, -norm is used as an objective function, which shows the robustness against outliers in waveform inversion. In this study, we propose the introduction of the L, 1, -norm into 2D reverse time migration with frequency-domain modeling operator. We demonstrate our...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-0594
... exploration. We extend the method and numerical algorithm of frequency domain (FD) 2-D EM migration, developed by Wan and Zhdanov (2005a, b) for full 3-D migration. We present several numerical examples of the practical application of this technique for fast imaging of a sea-bottom hydrocarbon (HC) reservoir...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-0518
... Summary This paper discusses an application of electromagnetic (EM) migration for sea-bottom EM imaging. We apply to marine EM data the method of frequency domain EM migration developed by Zhdanov et al. (1996) for fast imaging of land EM data. We study a synthetic survey with electric...
Proceedings Papers

Paper presented at the 2002 SEG Annual Meeting, October 6–11, 2002
Paper Number: SEG-2002-1212
... formula type 3 reservoir characterization acquisition geometry velocity model approximation amplitude-preserving finite-difference migration Amplitude-preserving finite-difference migration based on a least-squares formulation in the frequency domain René-Edouard Plessix and Wim Mulder, Shell...
Proceedings Papers

Paper presented at the 2002 SEG Annual Meeting, October 6–11, 2002
Paper Number: SEG-2002-1152
... Summary 3-D prestack migration of constant-offset data can be formulated in the frequency-wavenumber domain as a stationary phase approximation to equivalent Kirchhoff expressions. This formulation constitutes a proof of Dubrulle''s (1983) heuristic algorithm. Numerical implementations are 3-D...
Proceedings Papers

Paper presented at the 2002 SEG Annual Meeting, October 6–11, 2002
Paper Number: SEG-2002-1384
... inversion reflectivity approximation salt lake city migration optimization problem reflector equation iteration finite-difference iterative migration frequency domain linearized waveform inversion Finite-difference iterative migration by linearized waveform inversion in the frequency domain S...
Proceedings Papers

Paper presented at the 2001 SEG Annual Meeting, September 9–14, 2001
Paper Number: SEG-2001-1103
.... Migration based on a finite difference scheme for the two-way wave equation does not suffer from these drawbacks but the computational cost is very high. However, if the wave equation is solved in the frequency domain, the computational cost of the finite difference scheme is proportional to the number...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2997917
... anisotropic media. We develop an computationally efficient vector elastic reverse-time migration method in the hybrid time and frequency domains to greatly improve the computational efficiency. This computational efficiency improvement results largely from reducing the high computational cost of qP/qS-wave...

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