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- Title
Acoustic reverberation in a logging tool-borehole-saturated porous medium system.
- Authors
Markov, A.; Markov, M.; Ronquillo Jarillo, G.; Sadovnychiy, S.
- Abstract
The influence of the elastic and hydrodynamic properties of a rock on the time attenuation coefficient of an acoustic wave, which is reflected from the borehole wall, is considered using the methods of the mechanics of saturated porous media. The calculations were performed for a system consisting of an acoustic logging tool of a finite with a finite diameter, a fluid-filled borehole, and a porous permeable rock. The performed simulation showed that in rocks with a low hydrodynamic permeability, the acoustic-reverberation time is determined by the acoustic impedance of the borehole wall (product of the rock density and the longitudinal-wave velocity in it). In the case of rocks with a permeability of about several hundred millidarcy, the time signal's attenuation coefficient substantially depends on the rock's permeability.
- Subjects
HYDRODYNAMICS; SOUND waves; BOREHOLE logging; ELECTRIC prospecting; POROUS materials
- Publication
Izvestiya, Physics of the Solid Earth, 2014, Vol 50, Issue 2, p289
- ISSN
1069-3513
- Publication type
Article
- DOI
10.1134/S1069351314020050