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Keywords: frequency
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Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-426
... data. 2. DETERMINATION OF DIELECTRIC PERMITTIVITY The relative dielectric permittivity e r of the material is determined through signal reflectance at varying frequencies. By observing that the earth material to be studied is a dielectric material, and assuming negligible refraction losses of waves...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-512
... Reservoir Characterization aperture mineral precipitation frequency distribution frequency deposition chemical invasion amplitude waveform sample gf01 Upstream Oil & Gas precipitation flow rate sample gf08 histogram water-saturated condition sample gf05 sample gf03 mineral...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-559
... structural geology vicinity nondestructive property dynamic poisson Texas Wellbore Design limestone sample Reservoir Characterization Dallas reservoir geomechanics Houston limestone Upstream Oil & Gas frequency repeatability limit specimen clayshale vibration pulse velocity...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-543
... Reservoir Characterization experimental observation shale SINTEF Petroleum Research stiffness s-wave velocity frequency free water Velocity Dispersion rock physics model physics model Upstream Oil & Gas transition porosity shear moduli clay mineral experiment dispersion...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0715
... intensity frequency fracture center borehole estimate trace length borehole axis Pacific Rocks 2000, Girard, Liebman, Breeds & Doe (eds) O 2000 Balkema, Rotterdam, ISBN 90 5809 155 4 Borehole estimates of fracture size M. Mauldon Department of Civil and Environmental Engineering, University...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0197
... attenuation) in amplitudes and higher harmonics in frequencies. 1 INTRODUCTION When a stress wave SOurce is initiated in a rock mass, prediction of stress wave amplitude reaching engineered structures after propagation through the rock mass is a basis for analyzing the response and assessing the stability...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0587
...) at the rock-foundation interface. Upstream Oil & Gas outer ring wall Reservoir Characterization Parliament cbus excavation excavation-induced vibration Library foundation wall telecommunications criteria cbus footprint vibration level frequency ring wall bedrock excavation...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-1331
... resistivity methods. But, these methods are very hard to apply in high mountain area because of rugged terrain condition and limit of investigation depth. AMT (audio-frequency magnetotelluric) method has been usually applied to explorations for deep seated ground water and underground resources. However...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-1121
... in economical sense. frequency diameter maximum amplitude sensor Reservoir Characterization sensitivity approximate line voltage amplifier power spectrum frequency component field site amplification kHz wavefonn hydrophone Engineering frequency range amplitude waveform schematic...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-1249
.... Reservoir Characterization orientation rock fall emplacement drift key block block analysis block size frequency seismic effect tptpln zone Upstream Oil & Gas block movement seismic event lithologic zone drift orientation cumulative frequency Tptpmn zone azimuth quasi-static analysis...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1231
... with a hydrophone in the other borehole. We examine the transfer function calculated from the crack waves. This transfer function has two peaks at frequencies of 65 Hz and 160 Hz. When the wellhead pressure is increased from 0 MPa to 3.0 MPa, although these frequencies do not change, the amplitudes of the peaks...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1169
... a macroscopic fracture is formed, the energy in shear wave signals shows a dramatic frequency shift. This frequency shift is a signature of the partitioning of energy out of a bulk wave and into interface waves. Because this signature is observed prior to failure, it suggests the presence of an incipient...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1737
... for the variability of joint attitudes around their mean values. The analysis procedure was built into the framework of the Goodman and Shi (1985) block theory and allows for the evaluation of the maximum rock load frequency distributions, using a Monte Carlo simulation of joint set attitudes. An appreciation...
Proceedings Papers

Paper presented at the 1st North American Rock Mechanics Symposium, June 1–3, 1994
Paper Number: ARMA-1994-0139
... ABSTRACT 1 INTRODUCTION The importance of joints in the attenuation of high frequency seismic waves originates from the fact that the mechanical properties of rock joints contrast greatly in comparison to the mechanical properties of intact rock. Efforts to incorporate fractures in high...
Proceedings Papers

Paper presented at the 1st North American Rock Mechanics Symposium, June 1–3, 1994
Paper Number: ARMA-1994-0783
... frequency water content amplitude clay-fluid interaction peak frequency Spectral Amplitude contact stiffness Upstream Oil & Gas attenuation clay film grain-to-grain contact hexadecane fluid content quality factor peak-to-peak amplitude Rock Mechanics. Nelson & Laubach (OOs) © 1994...
Proceedings Papers

Paper presented at the 1st North American Rock Mechanics Symposium, June 1–3, 1994
Paper Number: ARMA-1994-0489
.... A servo-controlled rock mechanics test system has been used for the uniaxial stress cycling tests. Tests are conducted at a frequency of 10 -2 Hz frequency at different levels of strain amplitude and average stress. The static Young's moduli in sandstones shows a decreasing trend as strain amplitude...
Proceedings Papers

Paper presented at the 1st North American Rock Mechanics Symposium, June 1–3, 1994
Paper Number: ARMA-1994-0473
... of experiments was performed on five granites representative of the source region. Upstream Oil & Gas frequency Mean stress specimen uniaxial strain Reservoir Characterization modulus decrease experiment dynamic elastic moduli compressibility bulk moduli MPa moduli sierra white granite...
Proceedings Papers

Paper presented at the 1st North American Rock Mechanics Symposium, June 1–3, 1994
Paper Number: ARMA-1994-0937
... failure models. This strongly indicates a self-similar behavior of seismic sources. metals & mining attenuation displacement spectra Reservoir Characterization strength McGarr Upstream Oil & Gas Brune dimension source parameter seismicity frequency source radius Sudbury Basin...

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