Acquisition design for incoherent shooting
conference paper
In blended seismic data acquisition, the blended source wavefield should be designed in such a way that it has a large spatial bandwidth without notches. This corresponds to using blended source arrays with a high degree of incoherency. The three-dimensional (x,y,t) autocorrelation function of the blended source wavefield at the surface is proposed as a surface-related, quantitative measure of incoherency. In this assessment the subsurface is not involved. A second measure is proposed that does include the propagation effects of the near- and subsurface on the illumination by the blended source wavefield. For each subsurface gridpoint the autocorrelation function of the incident blended source wavefield - being represented by a dispersed time series - is judged for its whiteness. This result can be extended to angle-dependent illumination by computing the cross-correlation function as well.
TNO Identifier
464046
Source title
72nd EAGE Conference & Exhibition incorporating SPE EUROPEC 2010, Barcelona, Spain, 14-17 June 2010
Collation
5 p.
Files
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