Method of seismic processing involving converted P- or S-wave da

Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type

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367 50, 367 74, 364421, G01V 136

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active

046113118

ABSTRACT:
This invention relates to a method of increasing resolution of high-intensity amplitude events in seismic records provided by common midpoint collection methods (CMP) wherein nonsymmetrical travel paths of incident and reflected rays of the generated conventional waves are taken into account prior to trace stacking irrespective of dip or depth of the target reflector. In accordance with the invention, the converted phases of the conventional seismic wave, are processed as to define a series of common reflection point (CRP) coordinates each associated with a gather of converted traces as if a source associated with a given corrected trace was placed at each CRP and activated followed immediately by the relocation of a detector at the CRP and the reception of converted phases of the generated wave comprising the trace.

REFERENCES:
patent: 4373197 (1983-02-01), Gassaway et al.
"Velocity Spectra-Digital Computer . . . ", Taner et al., Geophysics vol. 34, #6, 12/69, pp. 859-881.
"Digital Processing of Transformed Reflected Waves", Neledkina et al., Geologiya Geofizika, vol. 21, #4, pp. 66-77, 1980.

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