FIELD: physics; geophysics.
SUBSTANCE: invention relates to geophysics and can be used in processing seismic data when searching for hydrocarbon deposits. The disclosed method of identifying geologic features from geophysical or attribute data includes using windowed principal component, or independent component, or diffusion mapping analysis. Subtle features become identifiable in partial or residual data volumes. The residual data volumes are created by eliminating data not captured by the most prominent principal components. The partial data volumes are created by projecting the data onto selected principal components. Geologic features may also be identified from pattern analysis or anomaly volumes generated with a variable-scale data similarity matrix.
EFFECT: high accuracy of prediction data of oil and gas content of an investigated area.
31 cl, 11 dwg
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