Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Patent
1996-12-06
1999-02-09
McElheny, Jr., Donald E.
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Earth science
G06F 1900
Patent
active
058706917
ABSTRACT:
The present invention is directed generally toward a method of processing seismic data so as 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, said 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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patent: 5500832 (1996-03-01), Berryhill
"Use of integrated energy spectra for thin-layer recognition", Geophysics, vol. 50, No. 3 (Mar. 1985), pp. 495-500.
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"Stratigraphic Modeling and Interpretation--Geophysical principles and Techniques," in Seismic Stratigraphy Applications to Hydrocarbon Exploration, A.A.P.G. Memoir 26, 1977, pp. 389-416.
Seismic Data Processing, Society of Exploration Geophysicists, 1987, Chaptesr 2.2, and 2.2.1, pp. 85-94.
Gridley James M.
Partyka Gregory A.
Amoco Corporation
Gabala James A.
McElheny Jr. Donald E.
Sloat Robert E.
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