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The AAPG/Datapages Combined Publications Database

AAPG Special Volumes

Abstract


Pub. Id: A167 (1985)

First Page: 1

Last Page: 10

Book Title: M 39: Seismic Stratigraphy II: An Integrated Approach to Hydrocarbon Exploration

Article/Chapter: Aspects of Seismic Resolution: Chapter 1

Subject Group: Seismic Stratigraphy, Sequence Stratigraphy

Spec. Pub. Type: Memoir

Pub. Year: 1985

Author(s): R. E. Sheriff

Abstract:

Where two or more reflections are more closely spaced than a quarter wavelength, a common situation for stratigraphic features of interest in petroleum exploration, the same half-cycles of the embedded wavelet tend to add; we call this the "thin-bed" case. In contrast, where they are close but separated by more than a quarter wavelength, different half-cycles tend to add; this is the "thick-bed" case. Many characteristics of seismic reflections differ in thin- and thick-bed situations.

On unmigrated seismic sections the limits of horizontal resolvability are imposed by Fresnel-zone considerations. However, on migrated sections other factors become important, such as noise on the unmigrated section, spatial aliasing, migration aperture, and uncertainties imposed by velocity, stacking, and two-dimensional assumptions.

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