Optimal wavelet selection under determining of the palaeochannel features
https://doi.org/10.18303/2619-1563-2024-3-74
Abstract
We present the results of the study of attributes, which are values of amplitudes obtained by wavelet decomposition at three fixed frequencies. Such attributes are used for RGB visualization. Comparison of RGB maps constructed using four wavelets: Ricker, Morlet, Gauss, Shannon, allowed us to determine the optimal type of wavelet that provides the best allocation of the paleochannel. The attribute values were also used to quantitatively assess the effective thickness of sediments related to the paleochannel. The results of the predictive estimates constructed on the basis of a linear relationship were compared with the thickness values obtained from wells. When solving this problem, the optimal wavelet was different from the one that provided the best allocation of the paleochannel using RGB technology.
Keywords
seismic exploration,
attribute analysis,
wavelet,
data interpretation,
paleochannel,
effective reservoir thickness
Supporting agencies: The study was carried out as part of government assignment to the Russian Academy of Sciences in basic research, Project FWZZ-2022-0017.
About the Authors
D. I. Kostashchuk
Trofimuk Institute of Petroleum Geology and Geophysics, SB RAS; Novosibirsk State University
Russian Federation
Russian Federation
Daniil I. Kostashchuk
Koptyug Ave., 3, Novosibirsk, 630090; Pirogova Str., 1, Novosibirsk, 630090
G. M. Mitrofanov
Trofimuk Institute of Petroleum Geology and Geophysics, SB RAS; Novosibirsk State University; Novosibirsk State Technical University
Russian Federation
Russian Federation
Georgy M. Mitrofanov
Koptyug Ave., 3, Novosibirsk, 630090; Pirogova Str., 1, Novosibirsk, 630090; K. Marks Ave., 20, Novosibirsk, 630073
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Review
For citations:
Kostashchuk D.I., Mitrofanov G.M. Optimal wavelet selection under determining of the palaeochannel features. Russian Journal of Geophysical Technologies. 2024;(3):74-86. (In Russ.) https://doi.org/10.18303/2619-1563-2024-3-74
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