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Modeling Borehole Stoneley Wave Propagation Across Permeable In-Situ Fractures
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1991)
The characterization of hydraulic transmissivity of permeable fracture reservoirs is a
very important task in the exploration of water resources and hydrocarbons. Previous
studies that model the permeable structure as a ...
Modeling Fluid Flow In Heterogeneous And Anisotropic Porous Media
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1991)
Permeability distribution in reservoirs is very important for the flow of water or oil and gas. In this study, the effects of various heterogeneous permeability distributions on the flow field are simulated using the finite ...
Homomorphic Processing Of Acoustic Logging Data
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1991)
A new processing method, which we developed for the guided waves generated during
acoustic logging, accurately estimates the wavenumber when only a few seismograms
are available or when the seismograms are irregularly ...
Report Summary
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1991)
This report contains the results of work completed during the ninth year of the Full
Waveform Acoustic Logging Consortium in the Earth Resources Laboratory at M.LT.
During the past year, we have started the evolution ...
Modeling Of Elastic Wave Propagation In A Fluid-Filled Borehole Excited By A Piezoelectric Transducer
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1991)
Acoustic logging is an important geophysical method for obtaining relevant information
concerning rock properties in formations traversed by boreholes. Typically, the formation
parameters that are measured are the ...
Characterizing Surface Roughness From Pressure-Joint Closure Measurements Using Inversion Procedure
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1991)
An inversion procedure has been formulated to estimate the surface roughness of a joint
(fracture) from the measured pressure-closure data. A gamma distribution for the local
minima (or maxima) on a topography profile ...
Borehole Stoneley Wave Propagation Across Heterogeneous And Permeable Structures
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1991)
This study investigates the propagation of borehole Stoneley waves across heterogeneous
and permeable structures. By modeling the structure as a zone intersecting the borehole,
a simple one-dimensional theory is formulated ...
The Equivalent Force System Of A Monopole Source In A Fluid-Filled Open Borehole
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1991)
The elastodynamic body-wave field outside a fluid-filled open borehole due to a monopole
source in the fluid, is reduced to the radiation-field due to a suitable equivalent force
system (EFS) in the absence of the borehole, ...
Effects Of A Logging Tool On The Stoneley Wave Propagation In Elastic And Porous Formations
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1991)
A detailed study is carried out to investigate the effects of an acoustic logging tool on
the propagation characteristics of Stoneley waves in both elastic and porous formations.
In an elastic formation, the presence of ...
Secondary Shear Waves From Source Boreholes
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1991)
The purpose of this paper is to synthesize the most important results of the thesis work
of Meredith (1990) concerning radiation from seismic sources in boreholes.
Previous studies of radiation from sources in boreholes ...