Title: Interpretative lessons from three‐dimensional modeling
Abstract: Three‐dimensional (3-D) seismic modeling has been accomplished by describing geologic surfaces with triangular plates and then computing the seismic response by Kirchhoff wave theory. The resulting time sections illustrate many interesting 3-D phenomena which are useful in interpreting geologic structures. Three‐dimensional resolution studies relate the concept of Fresnel zone reflection to seismic resolution. If high resolution is desired both horizontally and vertically, then not only is a dense field survey required, but also a detailed amplitude study. The dense seismic coverage is required to map the focal line of concave boundary edges, which are difficult to delineate with conventional seismic data. Additional studies on complex models, such as grabens and 3-D permeability traps, associate interpretational pitfalls to a wandering specular reflection path, that is, “side‐swipe.” In each geologic model, maximum resolution is obtained on a principal plane line (dip line). If a seismic dip line is not available, the necessity of doing 3-D migration is emphasized, even if it is a migration of the time map.
Publication Year: 1982
Publication Date: 1982-05-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 35
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