Application of Spectral Decomposition Technique in Fluvial Sand Body Prediction
Received date: 2011-10-28
Revised date: 2012-03-17
Online published: 2012-05-10
Spectral decomposition is a more efficient method to identify reservoir than seismic attribute. It transforms the time domain of the seismic data in a certain time windows into the frequency domain by Discrete Fourier Transform. The reservoir thickness changes and boundary can be identified and imaged by the new amplitude spectrum and phase spectrum. The DFT computes an amplitude value at every hertz from the beginning frequency to the ending frequency，it has a highly deserved reputation for being safe and reliable .The fluvial sand body of Guantao formation in the Laohekou Oilfield is characteristic of thin thickness and severe variety in lateral direction. The thickness and geologic discontinuity and distribution of the sand body are predicted by the method of spectral decomposition. The results coincide well with actual drilling data.
Feng Bin, Zhao Fenghua, Wang Shuhua . Application of Spectral Decomposition Technique in Fluvial Sand Body Prediction[J]. Advances in Earth Science, 2012 , 27(5) : 510 -514 . DOI: 10.11867/j.issn.1001-8166.2012.05.0510
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