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Determination of seismic wave attenuation based on acoustic full waveforms

Eryk Święch 1  ,  
 
1
AGH University of Science and Technology
Mining Science 2015;22:55–63
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ABSTRACT
The loss of elastic energy to the medium can be quantified by the quality factor Q. Acoustic full waveforms log from Winna Góra1 borehole were used to estimate P-wave quality factor. Data used in this paper were analyzed with usage of GeoWin software. Interpretation of acoustic full waveforms was performed for the one pair of waveforms. The most important part in the interpretation of data is manual picking of P wave arrival, calculation of semblance function, and picking anomalies of P wave on amplitude spectrum. Using data from interpretation of acoustic full waveforms, we calculated quality factor. Based on provided analysis it is concluded that the highest attenuation ( so the lowest Q) is observed in Rotliegend strata.
CORRESPONDING AUTHOR
Eryk Święch   
AGH University of Science and Technology, Pagórek 29, 32-700 Bochnia, Polska
 
REFERENCES (4):
1. Barton N., 2007, Rock Quality, seismic velocity, attenuation and anisotropy. Taylor & Francis.
2. Paillet F. L., Cheng C. H. & Pennington W. D., 1992, Acoustic-waveform logging – advances in theory and application. The Log Analyst, 32, 3, 239-257.
3. Tonn R., 1989, Comparison of seven methods for computation of Q. Physics of the Earth and Planetary interiors, 55, 259 – 268.
4. Wawrzyniak K., 2007, Analysis of acoustic full waveforms in terms of improving information about elastic and reservoir parameters of rocks. PhD dissertation. WGGiOŚ AGH.
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eISSN:2353-5423
ISSN:2300-9586