| 摘要 |
A method for preparing a display of seismic data obtained from multiple-point coverage of a subterranean earth formation using an array of seismic sources and acoustic receivers. A set of seismic traces is obtained in such a manner that each trace is associated with a source-receiver pair separated by a particular offset distance, and all the traces are associated with a common subsurface reflection point. Each of the traces is filtered through a bank of band-pass filters to produce a set of filtered traces, each having a different frequency content, for each offset value. The filtered traces associated with a particular offset value are displayed in order of progressively changing frequency content, and the filtered traces associated with a particular frequency band are displayed in order of progressively changing offset value. The seismic traces are preferably processed prior to the band-pass filtering step to reduce source-generated noise, to compensate for non-geologic factors such as geometric divergence and source strength variation, and to flatten hyperbolic (or pseudo-hyperbolic) primary reflections. In one preferred embodiment, groups of filtered traces having offset values in a selected range and representing the output of one of the band-pass filters are stacked together, and the stacked traces are displayed in order to progressively changing frequency content or progressively changing ranges of offset values.
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