Inversion For Permeability From Stoneley Wave Velocity And Attenuation
The in situ permeability of a formation is obtained by the inversion of Stoneley wave phase velocity and attenuation, which are evaluated by applying the Extended Prony's method to the array sonic logging data. The Maximum Likelihood inversion is used together with logarithmic parameterizati...
| Auteurs principaux: | , , |
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| Autres auteurs: | |
| Format: | Technical Report |
| Publié: |
Massachusetts Institute of Technology. Earth Resources Laboratory
2012
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| Accès en ligne: | http://hdl.handle.net/1721.1/75161 |
| Résumé: | The in situ permeability of a formation is obtained by the inversion of Stoneley wave
phase velocity and attenuation, which are evaluated by applying the Extended Prony's
method to the array sonic logging data. The Maximum Likelihood inversion is used
together with logarithmic parameterization of the permeabilities. Formation shear
wave velocity is also inverted for. This process is tested on both synthetic and field
data. Logarithmic parameterization contributes to rapid convergence of the algorithm.
Permeabilities estimated from field data are in good agreement with core measurements. |
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