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Application of Residual Statics to Land Seismic Data: traveltime decomposition vs stack-power maximization
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  • Journal title : Geophysics and Geophysical Exploration
  • Volume 19, Issue 1,  2016, pp.11-19
  • Publisher : Korean Society of Earth and Exploration Geophysicists
  • DOI : 10.7582/GGE.2016.19.1.011
 Title & Authors
Application of Residual Statics to Land Seismic Data: traveltime decomposition vs stack-power maximization
Sa, Jinhyeon; Woo, Juhwan; Rhee, Chulwoo; Kim, Jisoo;
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 Abstract
Two representative residual static methods of traveltime decomposition and stack-power maximization are discussed in terms of application to land seismic data. For the model data with synthetic shot/receiver statics (time shift) applied and random noises added, continuities of reflection event are much improved by stack-power maximization method, resulting the derived time-shifts approximately equal to the synthetic statics. Optimal parameters (maximum allowable shift, correlation window, iteration number) for residual statics are effectively chosen with diagnostic displays of CSP (common shot point) stack and CRP (common receiver point) stack as well as CMP gather. In addition to removal of long-wavelength time shift by refraction statics, prior to residual statics, processing steps of f-k filter, predictive deconvolution and time variant spectral whitening are employed to attenuate noises and thereby to minimize the error during the correlation process. The reflectors including horizontal layer of reservoir are more clearly shown in the variable-density section through repicking the velocities after residual statics and inverse NMO correction.
 Keywords
subsurface irregularities;residual statics;traveltime decomposition method;stack-power maximization method;super traces;cross correlation;
 Language
Korean
 Cited by
 References
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