Seismic mapping of complex reflectors with the common-reflecting-element method (CRE method)

Details Seismic mapping of complex reflectors with the common-reflecting-element method (CRE method) Seismic mapping of complex reflectors with the common-reflecting-element method (CRE method)

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pepi...67..200r&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 67, Issue 1-2, p. 200-210.

Physics

3

Scientific paper

The common-reflecting-element method (CRE method) is a new stacking algorithm for multifold covered seismic reflection data. Compared with the well-established common-midpoint (CMP) technique, its concept promises an improved resolution of complex geological subsurface structures. The core of the CRE stacking method is a pre-stack coherency analysis of reflected signals. This allows selection of groups of source-receiver pairs from a given data set which provide an optimum image of inclined reflector elements. For non-horizontal reflector elements the source-receiver pairs have a spatially asymmetric distribution relative to a central point. The coherency analysis is performed with respect to two variables: radius of curvature and angle of incidence of the reflected wavefronts. Both CRE and CMP methods are applied here to field data from a shallow salt dome. The two types of sections show common features but differ remarkably in detail. Compared with the CMP stack the CRE section reveals a higher level of coherently stacked reflection energy.

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