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Abstract

Summary

Spectral decomposition techniques have been widely used in seismic interpretation. However, the common used methods have two limitations, low time resolution and uncertainty in predicting fluid types. In this study, a seismic complex decomposition technique is developed to achieve a much higher resolution in time-frequency distributions via inversion strategy and to reduce the uncertainty in hydrocarbon detection with the extracted wavelet phase information. The time-varying wavelet frequency and phase information are obtained by decomposing the seismic trace using a wavelet library composed of a number of complex Ricker wavelets with different dominant frequencies and zero phase. This process is referred to as the seismic complex decomposition. The Synthetic examples show the accuracy of the proposed method and the ability to distinguish closely positioned wavelets. The real data example demonstrates the high time resolution in reservoir predicting and the successful application of the phase information in distinguishing gas saturated layers and water saturated layers.

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/content/papers/10.3997/2214-4609.201412819
2015-06-01
2024-04-23

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Application of Seismic Complex Decomposition on Hydrocarbon Detection
Conference Proceedings 2015, 1 (2015); https://doi.org/10.3997/2214-4609.201412819
/content/papers/10.3997/2214-4609.201412819
/content/papers/10.3997/2214-4609.201412819
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