CRS4

3D zero-offset Common Reflection Surface Stack for land data

Antonio Maria Cristini, Giovanni Cardone, Pedro Chira, Peter Hubral, Paolo Marchetti
Workshop on velocity model independent imaging for complex media, Extended Abstracts - 2001
The 3D Zero-Offset (ZO) Common-Reflection-Surface (CRS) Stack is a data driven technique to simulate a 3D ZO section from multi-coverage reflection pre-stack data. It provides important wave-field attributes and uses an operator that fits the recorded pre-stack data much better than conventional methods. The operator depends on eight parameters that are determined by means of coherency analysis procedures. This method includes three main aspects: a)a stacking operator that does not depend on the macro-velocity model, b) wavefield parameters with their own physical meaning from which several seismic attributes as the NMO velocity field, the geometrical spreading factor and the projected Fresnel zones (Hubral et al, 1993b) can be obtained and c) a stack operator that uses more CDPs than conventional methods. This gives a very high signal to noise ratio. A 3D implementation is presented. The used standard land acquisition has a good azimuth distribution with respect to the marine case, which requires a different 3D CRS Stack approach. Our presentation is to bring the method to an industrial level, looking for the best compromises between solution strategies and algorithm implementations on one side and the computational costs on the other side.

BibTex references

@InProceedings{CCCHM01b,
  author       = {Cristini, A. and Cardone, G. and Chira, P. and Hubral, P. and Marchetti, P.},
  title        = {3D zero-offset Common Reflection Surface Stack for land data},
  booktitle    = {Workshop on velocity model independent imaging for complex media, Extended Abstracts},
  year         = {2001},
  keywords     = {data-driven method, crs, stacking, hpc},
  url          = {http://publications.crs4.it/pubdocs/2001/CCCHM01b},
}

Other publications in the database

» Antonio Maria Cristini
» Giovanni Cardone
» Pedro Chira
» Peter Hubral
» Paolo Marchetti