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The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 65 (1981)

Issue: 5. (May)

First Page: 917

Last Page: 917

Title: What is Horizontal Previous HitResolutionNext Hit?: ABSTRACT

Author(s): L. R. Denham, R. E. Sheriff

Article Type: Meeting abstract


Horizontal Previous HitresolutionNext Hit is the smallest interval measurable in the horizontal direction by the seismic method. Because both migrated and unmigrated sections are used for interpretation, the Previous HitresolutionNext Hit of both must be evaluated. On unmigrated sections, the horizontal Previous HitresolutionNext Hit is generally limited by Fresnel zone size for dominant frequency of the reflection being mapped. Features smaller than this seen on the section are probably noise or processing artifacts.

The horizontal Previous HitresolutionNext Hit of a migrated section is much better than that of an unmigrated section and, theoretically, is directly related to the Previous HitverticalNext Hit Previous HitresolutionNext Hit and angle of migration. In practice, the horizontal Previous HitresolutionTop is limited by uncertainties in velocity, inadequate spatial sampling, and presence of coherent noise, as well as shortcomings of, and approximations used in, the stacking and migration algorithms.

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Copyright 1997 American Association of Petroleum Geologists