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A Dynamic Model For Fluid Flow In A Borehole Fracture
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1988)
The attenuation of Stoneley waves by a borehole fracture are closely related to fluid
flow in the fracture. We consider the dynamic response of a viscous fluid in a horizontal
fracture to the oscillating pressure excitation ...
Wave Propagation In A Fluid-Filled Fracture-An Experimental Study
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1989)
A laboratory experimental study has been carried out to investigate the mode trapping
characteristics of a fluid-filled fracture between two elastic solids. Using a small circular cylindrical receiver of 2.7 mm diameter, ...
Stoneley Wave Propagation In A Fluid-Filled Borehole With A Vertical Fracture
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1989)
The propagation of Stoneley waves in a fluid-filled borehole with a vertical fracture is
investigated both theoretically and experimentally. The borehole propagation excites
fluid motion in the fracture and the resulting ...
Theoretical Models Relating Acoustic Tube-Wave Attenuation To Fracture Permeability - Reconciling Model Results With Field Data
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1989)
Several recent investigations indicate that tube-wave amplitude attenuation in acoustic
full-waveform logs is correlated with permeability in fractured rocks. However, there
are significant differences between predictions ...
Elastic Wave Diffraction Of A Piston Source And Its Effect On Attenuation Measurement
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1988)
The radiation of an elastic wave field from a plane piston source is formulated using
the representation theorem, in which the Green's function for an elastic half space
is employed. On the basis of this formulation, we ...
A Method of Measuring Acoustic Wave Attenuation in the Laboratory
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1987)
The measurement of attenuation is performed by directly determining the attenuation
operator (or the impulse response of the medium) in the time domain. In this way,
it is possible to separate the attenuation operator ...