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Keywords: velocity change
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Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1770
... sensitive to the velocity changes. Therefore, our studies suggest that coda-wave interferometry analysis could be used to detect small time-lapse reservoir changes, as long as the 4D seismic effects are larger than the measurable signal-to-noise ratio. Simulation Reservoir Characterization North...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-654
... of Marcellus (0.0522) then 50:50 mixtures (0.0427) and 100% quartz (0.0154). An instant permeability jump occurs with a velocity change followed by a relatively constant residual permeability for Marcellus gouges and 50:50 mixtures, while the permeability of quartz decreases continually independent...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0522
... noise where background vibrations produced by mining activity are used to turn seismic sensors in to virtual active sources. These two methods then allow us to measure 3D and directional velocity changes where these can be compared with mining activities to get a better understanding of the effect...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-861
... vibration acceleration shear-slip characteristic evolution zigzag Reservoir Characterization AE energy instability shear stress velocity change mainshock Upstream Oil & Gas shear stress drop simulated fault shear-slip event experimental research 1. INTRODUCTION Dynamic slip...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-653
... concentration Desert Creek reservoir co 2 low-velocity zone velocity model arrangement tomogram injection geophone array low velocity zone tomography velocity change 1. INTRODUCTION Climate change is a significant international concern, often attributed to increasing concentrations of greenhouse...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-234
... CO2 injection. Hence, the Eberhart-Phillips correlation was utilized to calculate the velocity changes caused by pore pressure changes that the pressure data from several wells in the field is available. While Eberhart-Phillips correlation doesn’t take into account the CO2 saturation effect...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-329
... if compressional (P-) and shear (S-) wave velocities change when a CO 2 saturated Indiana limestone sample is heated and cooled across the CO 2 critical temperature while the pore pressure is maintained above the critical pressure. 2.EXPERIMENTAL SYSTEM Laboratory experiments to investigate the change...
Proceedings Papers

Paper presented at the Vail Rocks 1999, The 37th U.S. Symposium on Rock Mechanics (USRMS), June 7–9, 1999
Paper Number: ARMA-99-0869
... room 425 experimental tunnel seal velocity change Magnitude Rock mechanics tsx tunnel granite tunnel wall tunnel AE activity Rock Mechanics for Indust Amadei, Kranz, Scott & $meallie (eds) ¸ 1999 Balkema, Rotterdam, ISBN 90 5809 052 3 Monitoring an experimental tunnel seal in granite using...
Proceedings Papers

Paper presented at the The 34th U.S. Symposium on Rock Mechanics (USRMS), June 28–30, 1993
Paper Number: ARMA-93-0721
... ABSTRACT INTRODUCTION This paper documents two case studies of imaging blast damage zones. A novel technique of imaging the spatial variation in seismic velocity changes is used [1], in which velocity difference images are computed from cross-correlated time delays along common ray paths...

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