Inversion For Permeability From Stoneley Wave Velocity And Attenuation
Name
1990.7 Cheng et al.pdf
Size
333.56 KB
Format
Adobe PDF
Checksum (MD5)
044fa291684acbb6e5fd2bb1602cd1af
Author(s)
Cheng, N. Y.
Cheng, C. H.
Toksoz, M. N.
Date Issued
1990
Publisher
Massachusetts Institute of Technology. Earth Resources Laboratory
Series/Report no.
Earth Resources Laboratory Industry Consortia Annual Report;1990-07
Abstract
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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