Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Patent
1999-01-19
2000-10-10
McElheny, Jr., Donald E.
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Earth science
G06F 1900
Patent
active
061310719
ABSTRACT:
The present invention is directed generally toward a method of processing seismic data to provide improved quantification and visualization of subtle seismic thin bed tuning effects and other sorts of lateral rock discontinuities. A reflection from a thin bed has a characteristic expression in the frequency domain that is indicative of the thickness of the bed: the reflection has a periodic sequence of notches in its amplitude spectrum, with the notches being spaced a distance apart that is inversely proportional to the temporal thickness of the thin bed. Further, this characteristic expression may be used to track thin bed reflections through a 3-D volume and estimate their thicknesses and lateral extent. The usefulness of this invention is enhanced by a novel method of frequency domain whitening that emphasizes the geologic information present within the spectrum. Although the present invention is preferentially applied to a 3-D seismic volume, it is alternatively applied to any collection of spatially related seismic traces.
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Gridley James M.
Kirlin R. Lynn
Marfurt Kurt J.
Partyka Gregory A.
BP Amoco Corporation
Gabala James A.
McElheny Jr. Donald E.
Sloat Robert E.
Watt Terry
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