Seismic Resolution And Illumination: A Wave-equation-based Analysis

We develop a method to evaluate the resolution of seismic images using a wave-equation-based operator. The one-way wave-equation-based propagator is used to extrapolate the wavefields from both the source and receivers to a target region. The plane wave analysis method is used to decompose the wavefields and calculate the wavenumber domain resolution function. The method can be applied to complex models without smoothing velocity. It can also handle irregular acquisition geometry and finite frequency band. The resulting resolution function can be used to estimate image quality or correct the image distortion caused by the uneven illumination.

[1]  Mapping Directional Illumination and Acquisition-Aperture Efficacy by Beamlet Propagators , 2002 .

[2]  D. R. Muerdter,et al.  Understanding subsalt illumination through ray-trace modeling, Part 3 Salt ridges and furrows, and the impact of acquisition orientation , 2001 .

[3]  Håvar Gjøystdal,et al.  Simulated Prestack Local Imaging: a robust and efficient interpretation tool to control illumination, resolution, and time-lapse properties of reservoirs. , 2003 .

[4]  D. R. Muerdter,et al.  Understanding subsalt illumination through ray-trace modeling, Part 1: Simple 2-D salt models , 2001 .

[5]  Gerard T. Schuster,et al.  Green's function for migration: Continuous recording geometry , 2000 .

[6]  R. Gibson,et al.  Quantitative measures of image resolution for seismic survey design , 2002 .

[7]  Xiao‐Bi Xie,et al.  Improve the wide angle accuracy of screen method under large contrast , 1998 .

[8]  Gerrit Blacquière,et al.  Comprehensive assessment of seismic acquisition geometries by focal beams—Part I: Theoretical considerations , 2001 .

[9]  D. R. Muerdter,et al.  Understanding subsalt illumination through ray-trace modeling, Part 2: Dipping salt bodies, salt peaks, and nonreciprocity of subsalt amplitude response , 2001 .

[10]  Xiao‐Bi Xie,et al.  Three-dimensional Illumination Analysis Using Wave Equation Based Propagator , 2003 .

[11]  Z-99 Directional illumination and acquisition dip- response , 2003 .

[12]  Xiao‐Bi Xie,et al.  Wave equation based illumination analysis , 2004 .

[13]  Prestack Depth Migration In Angle-domain Using Beamlet Decomposition: Local Image Matrix And Local AVA , 2003 .

[14]  Gregory Beylkin,et al.  Spatial Resolution of Migration Algorithms , 1985 .

[15]  Gerrit Blacquière,et al.  Comprehensive assessment of seismic acquisition geometries by focal beams—Part II: Practical aspects and examples , 2001 .

[16]  Leiv-J. Gelius,et al.  Analysis of the resolution function in seismic prestack depth imaging , 2002 .

[18]  I. Lecomte,et al.  2-D Deconvolution of Seismic Image Blur , 2003 .

[19]  Ru-Shan Wu,et al.  Extracting Angle Domain Information From Migrated Wavefield , 2002 .

[20]  P147 DIRECTIONAL ILLUMINATION AND , 2003 .