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Application Of Rayleigh's Principle To Guided Waves In A Borehole
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1988)
The Lagrangian for guided waves in a completely general borehole model is presented.
Rayleigh's principle is used to derive the first order perturbations in wavenumber and
frequency due to slight perturbations in the ...
Estimating Phase Velocity And Attenuation Of Guided Waves In Acoustic Logging Data
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1988)
Phase velocity and attenuation of guided waves have been estimated from acoustic logging
data recorded by a receiving array. The method uses data from multiple sources
and successive depths yielding more accurate estimates ...
Acoustic Logging Guided Waves In Transversely Isotropic Formations
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1988)
We have studied the velocity dispersion of guided waves in transversely isotropic formations. Theoretical velocity dispersion curves were calculated with elastic constants
based on laboratory and field measurements and ...