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Proposing a new strategy in multi-seismic attribute combination for identification of buried channel

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Abstract

The seismic data interpretation reveals properties of the subsurface structures, appropriate for further geological or exploration investigations. The buried channels are desired exploratory targets for petroleum reservoir exploration, drilling concerns or geological investigations. Therefore, it is required to precisely identify the geometry of the buried channels through the signal image analysis and the geological interpretation of the seismic data. The continuous wavelet transform (CWT) is a spectral discrete transform method for non-stationary signal analysis, useful to enhance the resolution of the seismic data both in time and frequency domains. In the presented study, we propose a strategy for a precise identification of buried channels, using a vast number of time–frequency seismic attributes on 3D seismic data. The spectral decomposition by the CWT method has been performed on 20, 25, 30, 35, and 40 Hz frequency sections. The seismic attributes have been extracted, including the energy, the instantaneous amplitude, the average root mean square, the Prewitt and Grubbs filters, the similarity, the semblance, and the grey-level covariance matrix. The most favorable results have been selected to be integrated, so providing new attributes through RGB composition. This integration has been performed both for single frequency and multi-frequency seismic sections. As a result of applying the proposed strategy on the selected synthetic and field dataset, the boundaries of the buried channel as well as its inner structure, have been individuated. The final model of the seismic attributes has revealed that the proposed strategy represents an alternative to the conventional procedure of identification the buried channel.

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Correspondence to Amin Roshandel Kahoo.

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Khasraji-Nejad, H., Roshandel Kahoo, A., Soleimani Monfared, M. et al. Proposing a new strategy in multi-seismic attribute combination for identification of buried channel. Mar Geophys Res 42, 35 (2021). https://doi.org/10.1007/s11001-021-09458-6

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  • DOI: https://doi.org/10.1007/s11001-021-09458-6

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