Abstract
Based on the observation that oil and gas reservoir shows the characteristics of low frequency resonating and high frequency attenuating, spectrum attenuation of seismic data are evaluated by calculating the ratio of high frequency components to low frequency components of each trace in the time-frequency domain. An edge-preserving smoothing (EPS) method is used to select the spectrum attenuation related to hydrocarbon according to attenuation trend. A real seismic data example suggests that the spectrum attenuation calculated by ratio can avoid the impact of strong reflectivity amplitude, and the selected spectrum attenuation is more precise for locating hydrocarbons than the use of spectrum attenuation directly.
| Original language | English |
|---|---|
| Pages (from-to) | 1958-1962 |
| Number of pages | 5 |
| Journal | SEG Technical Program Expanded Abstracts |
| Volume | 30 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2011 |
Keywords
- Gas
- Low frequency
- Poststack
- Reservoir characterization
- Transform
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