Frequency-domain reverse-time migration with source estimation

Although artificially generated seismic sources such as dynamite, vibroseis, and air guns are used in seismic exploration, it is not easy to exactly recover the source wavelet in field recording or in data processing. For this reason, seismic data processing often assumes that an explosive-source wavelet can be described by a well-known function (e.g., a Ricker wavelet), a near-offset trace, or a deconvolved wavelet. In frequency-domain waveform inversion, it has been proven that a source wavelet can be estimated by an optimization method, and incorporating the source wavelet estimation into an inversion algorithm yields better inversion results. We have developed source wavelet estimation into 2D two-way frequency-domain reverse-time migration. The source wavelet is first estimated independently of reverse-time migration by an optimization method such as the full Newton method. It is then used in reverse-time migration. This source-wavelet-incorporated reverse-time migration algorithm is applied to three...

[1]  J. Sun,et al.  Practical issues in reverse time migration: true amplitude gathers, noise removal and harmonic source encoding , 2009 .

[2]  P. Lailly,et al.  Marmousi, model and data , 1990 .

[3]  Robin P. Fletcher,et al.  Suppressing unwanted internal reflections in prestack reverse-time migration , 2006 .

[4]  Kurt J. Marfurt,et al.  Reverse-Time Migration using the Poynting Vector , 2006 .

[5]  S. Greenhalgh,et al.  Crosshole seismic inversion with normalized full‐waveform amplitude data , 2003 .

[6]  René-Édouard Plessix,et al.  How to choose a subset of frequencies in frequency-domain finite-difference migration , 2004 .

[7]  Martin Landrø,et al.  Source signature determination by inversion , 1992 .

[8]  C. Officer,et al.  Introduction to the theory of sound transmission : with application to the ocean , 1958 .

[9]  Changsoo Shin,et al.  Frequency-Domain Elastic Full Waveform Inversion Using the New Pseudo-Hessian Matrix: Experience of Elastic Marmousi-2 Synthetic Data , 2008 .

[10]  S. Brandsberg-Dahl,et al.  The 2004 BP Velocity Benchmark , 2005 .

[11]  R. Shipp,et al.  Two-dimensional full wavefield inversion of wide-aperture marine seismic streamer data , 2002 .

[12]  E. Baysal,et al.  Reverse time migration , 1983 .

[13]  Z. M. Song,et al.  Frequency-domain acoustic-wave modeling and inversion of crosshole data; Part II, Inversion method, synthetic experiments and real-data results , 1995 .

[14]  Denes Vigh,et al.  3D prestack plane-wave, full-waveform inversion , 2008 .

[15]  Hicks,et al.  Gauss–Newton and full Newton methods in frequency–space seismic waveform inversion , 1998 .

[16]  Stéphane Operto,et al.  Fast 2-D ray+Born migration/inversion in complex media , 1999 .

[17]  B. Thyberg,et al.  From mud to shale: rock stiffening by micro-quartz cementation , 2009 .

[18]  R. Pratt.  Seismic waveform inversion in the frequency domain; Part 1, Theory and verification in a physical scale model , 1999 .

[19]  K. Marfurt.  Accuracy of finite-difference and finite-element modeling of the scalar and elastic wave equations , 1984 .

[20]  S. Treitel,et al.  A REVIEW OF LEAST-SQUARES INVERSION AND ITS APPLICATION TO GEOPHYSICAL PROBLEMS* , 1984 .

[21]  Alejandro A. Valenciano,et al.  2‐D deconvolution imaging condition for shot‐profile migration , 2003 .

[22]  Antoine Guitton,et al.  Least-squares attenuation of reverse-time-migration artifacts , 2007 .

[23]  A. Tarantola.  Inversion of seismic reflection data in the acoustic approximation , 1984 .

[24]  C. Shin,et al.  Improved amplitude preservation for prestack depth migration by inverse scattering theory , 2001 .

[25]  R. Plessix,et al.  Frequency-domain finite-difference amplitude-preserving migration , 2004 .

[26]  Philip M. Morse,et al.  Introduction to the Theory of Sound Transmission , 1959 .

[27]  G. Chavent,et al.  An optimal true-amplitude least-squares prestack depth-migration operator , 1999 .

[28]  Sang Suh,et al.  Reverse‐time migration by fan filtering plus wavefield decomposition , 2009 .

[29]  E. Brigham,et al.  The fast Fourier transform and its applications , 1988 .

[30]  Kun Xu,et al.  Comparison of source-independent methods of elastic waveform inversion , 2006 .

[31]  Changsoo Shin,et al.  Comparison of waveform inversion, part 1: conventional wavefield vs logarithmic wavefield , 2007 .

[32]  N. Whitmore.  Iterative Depth Migration By Backward Time Propagation , 1983 .