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Keywords: fracture stiffness
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Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0783
..., and temperature in P-wave signatures across single fluid-filled rock fractures. geologist hydraulic fracturing fracture plate tectonics reservoir geomechanics structural geology reservoir characterization fracture thickness propagation fracture stiffness coefficient reflection coefficient rock...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1945
... reservoir fracture stiffness mud loss boundary condition leak-off coefficient drilling fluid formulation fracture face fracture ballooning fracture drilling fluid chemistry hydraulic fracturing Upstream Oil & Gas majidi deformation mud invasion leak-off value equation ARMA 19 1945...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-225
... into the formation, qf , after shut-in equals the rate of shrinkage of total fracture volume, Vf, as pressure declines: = (2) Fracture stiffness, which is the reciprocal of fracture compliance, is defined as (Wang and Sharma 2017a; Wang et al. 2018): = (3) where is pressure inside fracture and is half of the total...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0386
... uniform fracture stiffness across all fractures. A methodology is presented for inverting a source from the experiment. We find that the waveforms from the three models do not match each other. For propagation parallel to the fractures, the explicit model performs best with excellent agreement...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-729
... of the faults. Upstream Oil & Gas Rock mechanics complex reservoir calcium carbonate hydraulic fracturing fracture stiffness experiment solution 1 precipitate fracture amplitude stiffness international journal Reservoir Characterization precipitation co 2 State University solution 2...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-382
.... The fracture stiffness differed among the fractures in the two sets and also differed from the stiffness of the intersections. Interpretation of the properties of fractures or fracture sets must consider the existence of non-uniform fracture stiffness within and among fracture sets, as well as consider...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7531
...-modes are mainly affected by the fracture stiffness, signal frequency and fracture orientation with respect to the layering. From the experimental data, the apparent anisotropy was dominated by fractures at low stress because the energy was confined between the low stiffness fractures. At high stresses...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-197
... that removes the first order effects of size and stress-dependence. We demonstrate this concept with a numerical investigation into the scaling of fracture stiffness with the size of the fracture and the normal stress state to which the fracture is exposed. We find that while the specific stiffness exhibits...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-405
... waves. Shear and normal fracture stiffnesses were calculated using the displacement discontinuity theory. The stiffness ratio determined from the experiments was compared to a theoretical ratio that was determined assuming that the transmission of compressional and shear waves was equal...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-343
... dependent, with the relaxation frequency at 10~20 Hz. This result, however, did not agree well with an analytical model which predicted much larger compliance changes and a higher relaxation frequency than the experiment. Observed normal to shear fracture stiffness ratio ranged from 1.8–2.8...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-565
... invaded portions of the fracture that had a relatively low fracture stiffness and then spread to the regions with higher stiffness. In conclusion, the fluid front can be detected seismically and the spatial variation of fracture stiffness is correlated to the fluid flow path. 1. INTRODUCTION A goal...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-568
... Upstream Oil & Gas fracture stiffness effective stress coefficient evolution stiffness flow in porous media fracture aperture dual permeability dual stiffness poromechanical response fracture interaction Fluid Dynamics coal permeability evolution matrix poromechanical effect...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-610
... of a numerical investigation into the scaling of fracture stiffness with increasing fracture length. Using an efficient boundary element method we were able to simulate hundreds of virtual normal stress tests on entire fracture surfaces and on “sub-fractures” cut from them. In the paper we draw specific...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-159
... of the converted wave generation can be understood as a superposition of the waves diffracted (and mode-converted) by these "scatterers" on the fracture. Reservoir Characterization Upstream Oil & Gas granite sample displacement fracture stiffness seismic wave normal stress rough fracture...
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-06-1153
... that results in a discontinuity in the fracture stiffness at the interface between air and water. One-dimensional Fresnel diffraction calculations provide a basis to understand how the transmitted diffracted signals depend on the fracture specific stiffness and the frequency content of the signal. For the case...
Proceedings Papers

Paper presented at the Alaska Rocks 2005, The 40th U.S. Symposium on Rock Mechanics (USRMS), June 25–29, 2005
Paper Number: ARMA-05-870
... crystal. Interpretation of fracture properties from seismic measurements is affected by these two extrinsic length scales. Reservoir Characterization hydraulic fracturing Upstream Oil & Gas fracture stiffness seismic measurement transmission coefficient reactive flow diameter acoustic...
Proceedings Papers

Paper presented at the The 35th U.S. Symposium on Rock Mechanics (USRMS), June 5–7, 1995
Paper Number: ARMA-95-0769
... scales of some of the key thermoporoelastic parameters such as the fracture stiffness required as input to the given analytical model. Experimental determination of these factors depends on the sensitivity achieved in measuring thermal strains for both saturated or unsaturated rock samples subject...

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