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Keywords: velocity measurement
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Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0491
... mount scott granite structural geology static measurement experiment basement rock Earthquake mechanical property seismicity granite velocity measurement moduli basement deformation diabase sample compressional Oklahoma 1. INTRODUCTION Compared to the boundaries of plates where...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-317
... velocity measurement mineral p-wave velocity effective media modeling MPa elastic property Velocity distribution seismic anisotropy orientation plagioclase biotite rock sample anisotropy 1. INTRODUCTION Seismic anisotropy observed on geological media may be caused by aligned cracks...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0776
... regarding rock-like behavior. As the substitutes of rock specimens, elastic properties of the samples are investigated through the velocity measurements and uniaxial compression test. The P-wave velocities and the attenuation coefficients of the 3D printed samples are obtained to estimate the quality factor...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0766
... formation rock Poisson tensile strength average tensile strength axial load MPa strength anisotropy sample axis Artificial Intelligence orientation borehole velocity measurement fracture anisotropy foliation 1. INTRODUCTION Under the kISMET project, supported by the Department of Energy...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-267
...-rich chalk microcrack maturation stage porosity Upstream Oil & Gas ultrasonic velocity organic matter assumption elastic coefficient velocity measurement anisotropy shefela basin Israel different direction maturation plug bedding plane 1. INTRODUCTION Accelerating interest...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-351
... instrument to measure P and S velocities on spheres. Petrological properties were studied by thin section analysis. Both, synchrotron and neutron diffraction data were analyzed for preferred orientation with the Rietveld method. The program MAUD was used for texture analysis. Velocity measurements were done...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-484
... angular dependence anisotropy stiffness triaxial test static moduli moduli dispersion shale reservoir geomechanics different orientation manco shale velocity measurement reservoir characterization frequency initial loading poisson ratio axial stress dynamic moduli field shale...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7122
... and examined. A set of rock mechanics experiments, including uniaxial compression test, triaxial compression test, and dipole ultrasonic velocity measurements at elevated temperatures, were fulfilled. It was found that the amount of impurities significantly affect the rock salt mechanical behavior. The results...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-389
... of static measurements, at points where the stress path turns from loading to unloading. Combined with dynamic (velocity) measurements, this may allow for estimation of dispersion, or estimation of Thomsen’s d-parameter, without the use of complicated experimental equipment. 1. INTRODUCTION Rock volumes...
Proceedings Papers

Paper presented at the 44th U.S. Rock Mechanics Symposium and 5th U.S.-Canada Rock Mechanics Symposium, June 27–30, 2010
Paper Number: ARMA-10-195
... temperatures (in the range -30°C and 80°C) and at different effective pressures (from 1.2 MPa up to 8 MPa). Experimental results showed that the elastic wave velocities measured are strongly dependent on temperature (mainly through the viscosity) whereas little effect of effective pressure was observed...
Proceedings Papers

Paper presented at the Golden Rocks 2006, The 41st U.S. Symposium on Rock Mechanics (USRMS), June 17–21, 2006
Paper Number: ARMA-06-989
... elastic moduli differed in values [1]. The ratio of the dynamic modulus (Ed) to reservoir geomechanics variation MPa rock material Upstream Oil & Gas GPa velocity measurement dynamic method mean value moduli Reservoir Characterization elastic property vertical stress granite...
Proceedings Papers

Paper presented at the DC Rocks 2001, The 38th U.S. Symposium on Rock Mechanics (USRMS), July 7–10, 2001
Paper Number: ARMA-01-0919
... ABSTRACT : Ultrasonic wave velocity measurements were made around one quadrant of a tunnel at Atomic Energy of Canada''s Underground Research Lab. The purpose of these measurements was to characterize the microcrack population induced during excavation of the tunnel at 420 m depth. An array...
Proceedings Papers

Paper presented at the The 33rd U.S. Symposium on Rock Mechanics (USRMS), June 3–5, 1992
Paper Number: ARMA-92-0959
... measurements parallel and perpendicular to the sample axis. One of the receiving transducers is also used as a passive transducer for Acoustic Emission (AE) measurements. Acoustic velocity measurements are performed within selected time intervals 96O only, while AE measurements are made continuously except...
Proceedings Papers

Paper presented at the The 30th U.S. Symposium on Rock Mechanics (USRMS), June 19–22, 1989
Paper Number: ARMA-89-0269
... ABSTRACT ABSTRACT: Acoustic emissions and compressional wave velocity measurements were monitored during anelastic strain recovery measurements on sandstone, siltstone, and chalk cores, immediately after the cores were retrieved from 2.7 to 3.2 km deep boreholes. Strain recovery occurred...
Proceedings Papers

Paper presented at the The 29th U.S. Symposium on Rock Mechanics (USRMS), June 13–15, 1988
Paper Number: ARMA-88-0691
... velocity field of a shallow refracting layer in the rock left standing. Overlapping of surveys, velocity measurements from shotholes (preblast) and measurements of predominant joint sets were used to verify results. Resulting tomograms show sublinear low velocity zones whose orientations correspond...
Proceedings Papers

Paper presented at the The 28th U.S. Symposium on Rock Mechanics (USRMS), June 29–July 1, 1987
Paper Number: ARMA-87-0345
... shale investigation rock material p-wave velocity velocity measurement excavation unconfined compressive strength topography the valley stateham Reservoir Characterization structural geology moisture content valley floor reduction Bedrock Valley hydrologic conductivity 28th US...
Proceedings Papers

Paper presented at the The 12th U.S. Symposium on Rock Mechanics (USRMS), November 16–18, 1970
Paper Number: ARMA-70-0121
... for the pulse velocity measurements. The sine wave generator, A, produces a continuous Figure 1. - Instrumentation for measuring pulse bar velocity. 124 DYNAMIC ROCK MECHANICS series of sine waves that are divided into single wavelets or packets of waves by a toneburst generator, B. These waves are, in turn...

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