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Keywords: granite sample
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1061
... initiation, coalescence and failure. Finally, it was found that the granite samples have the most violent failure mechanism under both uniaxial compressive and indirect tensile loadings being 17 times faster failure rate than the sandstone samples under uniaxial compression. Majority of the selected...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1150
... ABSTRACT: This paper aims to investigate the effect of thermal shock on the hydraulic fracturing process in hot dry rock. Five granite samples with the dimensions of 80×80×100 mm 3 were preheated (slow heating and rapid water cooling) for laboratory hydraulic fracturing experiments. P...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1581
... ABSTRACT: This paper aims to investigate the effect of cyclic thermal shock on mechanical properties and brittleness of granite. Uniaxial compression tests and brittleness evaluation was performed on granite samples after cyclic heating and water-cooling treatment. Further, characteristics...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1965
... nitrogen fracturing in geothermal reservoirs, especially in hot dry rock reservoirs. Reservoir Characterization Upstream Oil & Gas structural geology Engineering granite sample hydraulic fracturing heating temperature ln 2 liquid nitrogen specimen Poisson p-wave velocity Fluid...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2117
... ABSTRACT: To understand the effect of cold water injection on the mechanical properties and brittleness of rock, a series of mechanical tests were performed on granite samples. Firstly, granite samples were slowly heated to a series of target temperatures and then rapidly cooled down using...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-535
... of technological parameters in the process of liquid nitrogen fracturing hot dry rocks. Wellbore Design fracture toughness kuruppu md hydraulic fracturing reservoir geomechanics granite sample Reservoir Characterization experiment Upstream Oil & Gas mech rock eng hot dry rock treatment...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-297
... ABSTRACT: Hydraulic fracturing tests on cubic granite samples with a side length of 50 mm were conducted under a true tri-axial test equipment combined with acoustic emission (AE) monitoring. The applied three principal stresses are 20 MPa ( s v), 20 MPa ( s H) and 10 MPa ( s h...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0443
... as a ductile medium. Accurate prediction of such behavior may be crucial when assessing the long-term stability of these underground structures and the stress state around faults. We conducted triaxial creep experiments using thermally-fractured granite rocks. Westerly granite samples were heated to a maximum...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-597
... granite sample fracture toughness test specimen granite hydraulic fracturing sndb sample dynamic test limestone plane yeongju granite notch dynamic fracture toughness loading rate fracture toughness upstream oil & gas 1. INTRODUCTION Fracture toughness is an indication of the amount...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7041
... emission hydraulic fracturing granite sample shear vector flow in porous media mechanism histogram AE event volumetric deformation resolution Imaging tensile hydraulic fracture correlation coefficient fracture wellbore source mechanism 1. INTRODUCTION Hydraulic fracturing has become...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-315
... fractures and stress conditions. geothermal reservoir mechanism sigma analysis result Upstream Oil & Gas acoustic emission true-triaxial apparatus Artificial Intelligence granite sample stimulation waveform source mechanism hydraulic fracturing ae event source location event source...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-156
... to characterize tensile fracture AE signals. All concrete specimen sizes were approximately 45x60x140 mm3 beams. Granite specimen sizes were 40x50x240 mm3 beams. Three point and four point loading methods were used on the concrete and granite samples respectively in order to generate maximum beam moment...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-159
... friction in the granite sample-exhibiting smaller S-wave amplitudes increases for larger shear stresses-and a low-friction interface in the aluminum sample-showing sudden increases in S-wave amplitudes once the surface starts to slip under high shear stresses. As we demonstrate in this paper, for relating...
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-06-1118
... breakdown. Table 2 summarizes the results of the measured waveforms. The discharged currents increase with increasing applied voltages on regardless of the rock type as plotted in Figure 3. The current rise times for the granite samples were shorter than the other rock samples. The tuff samples showed...
Proceedings Papers

Paper presented at the The 28th U.S. Symposium on Rock Mechanics (USRMS), June 29–July 1, 1987
Paper Number: ARMA-87-0919
... loading fracture frequency exposure amplitude compressive strength watt Reservoir Characterization granite sample specimen load power rock type fragmentation 28th US Symposium on Rock Mechanics / Tucson/29 June- 1 July 198 7 The fragmentation ofSudbury hardrock by ultrasonics...

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