Abstract

Summary Seismic spectral attributes of apparent attenuation, as explained in the first part of this paper, measures the spectral changes of seismic signals due to absorption and scattering, which can provide quantitative measures of the seismic apparent attenuation effect. Seismic attenuation is sensitive to hydrocarbon accumulation, fluid-saturated fractures, and rugosity. Even in the absence of noise, the constant Q model and the spectral ratio techniques may provide poor estimates of the spectral response, particularly when geometric attenuation plays an important role. Here, we evaluate alternative seismic attenuation measurements (attributes) to characterize the apparent attenuation on field data. The results show the proposed attributes are valuable for seismic interpretation and provide important information about the reservoirs.

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