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Fourth-Order Finite Difference Acoustic Logs In A Transversely Isotropic Formation
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1993)
In this paper we present a finite difference scheme for seismic wave propagation in
a fluid-filled borehole in a transversely isotropic formation. The first-order hyperbolic
differential equations are approximated ...
Acoustic Logging In Randomly Stratified Formations
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1993)
The propagation of borehole acoustic waves in the presence of various types of heterogeneous formations is investigated by modeling them as stratified media with varying velocity-depth distributions. Two types of formations ...
Inversion For Permeability From Stoneley Wave Velocity And Attenuation
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1990)
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 ...
Experimental And Finite Difference Modelling Of Borehole Mach Waves
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1992)
A series of model experiments are done in the ultrasonic laboratory to study the radiation of downhole sources in a variety of formations. Three models are used in the
experiments. They are a lucite model, a lucite model ...
Estimation Of Formation Parameters Using Full Waveform Acoustic and Shear Wave Logs
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1992)
A combination of borehole Stoneley waves from full waveform acoustic logs and direct
shear wave logs was used to estimate formation permeability and shear wave velocity.
Data sets used here were collected by Area's array ...