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Keywords: fracture stiffness
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Proceedings Papers
Evolution of Hydraulic Fracture Permeability in EGS Considering Natural Fracture Compressibility and Strength of the Surrounding Rock
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0853
... elastic stiffness rock mechanic simulation shear strength orientation fracture plane flow in porous media stiffness fracture stiffness matrix operation ARMA 24-0853 Evolution of hydraulic fracture permeability in EGS considering natural fracture compressibility and strength of the surrounding...
Proceedings Papers
Numerical Simulation of Elastic Wavefield Evolution in Heterogeneous Fractured Media Based on a Combined Displacement Discontinuity-Discrete Fracture Network Model
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0399
... = ωZ / κ dominates the wavefield evolution of a plane wave travelling through the heterogeneous fractured rock with less heterogeneous materials ( m = 10) or high heterogeneous fractures ( ῶ ≥ 1). Here, ω , Z , and κ are the angular frequency, seismic impedance, and fracture stiffness...
Proceedings Papers
Dynamic Stress Wave Behaviors Across Single Fluid-Filled Rock Fractures
Available to PurchasePublisher: American Rock Mechanics Association
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
Transient Effects of Leak-off and Fracture Ballooning on Mud Loss in Naturally Fractured Formations
Available to PurchasePublisher: American Rock Mechanics Association
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
Estimating Fracture Closure Stress in Naturally Fractured Reservoirs With Diagnostic Fracture Injection Tests
Available to PurchasePublisher: American Rock Mechanics Association
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
Modelling P-Wave Propagation in a Medium With Multiple Parallel Fractures and Direct Comparison With Experimental Recordings.
Available to PurchasePublisher: American Rock Mechanics Association
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
Incorporating Universal Scaling of Fracture Stiffness and Surface Roughness Effects for Improved Productivity Prediction in Naturally Fractured Reservoirs
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-285
... & Gas compressibility fracture stiffness porosity reduction stiffness Barton mechanical aperture pressure depletion hydraulic aperture permeability aperture normal stress specimen stiffness characteristic fractured reservoir depletion prediction closure fracture ARMA 16-285...
Proceedings Papers
Modification of Fracture Geometry by Calcite Precipitation
Available to PurchaseZhenyu Xu, Qingyun Li, Julie Sheets, Timothy J. Kneafsey, David Cole, Young-Shin Jun, Laura J. Pyrak-Nolte
Publisher: American Rock Mechanics Association
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
Acoustic Wavefront Imaging of Orthogonal Fracture Networks subjected to Bi-axial Loading
Available to PurchasePublisher: American Rock Mechanics Association
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
Wave-guiding between Fractures in Transversely Isotropic Matrix
Available to PurchasePublisher: American Rock Mechanics Association
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
Exploring Alternative Characterizations of Fracture Stiffness and Their Respective Scaling Behaviors
Available to PurchasePublisher: American Rock Mechanics Association
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
Relationship Between Shear and Normal Stiffness for a Fracture Subjected to Mixed-Mode Loading
Available to PurchasePublisher: American Rock Mechanics Association
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
Low-frequency (<100 Hz) Dynamic Fracture Compliance Measurement in the Laboratory
Available to PurchasePublisher: American Rock Mechanics Association
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
Seismic Detection of Flow Paths In a Air-Filled Fracture Under Stress
Available to PurchasePublisher: American Rock Mechanics Association
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
Permeability Evolution In Dual Permeability Dual Stiffness Sorbing Media
Available to PurchasePublisher: American Rock Mechanics Association
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
A Numerical Investigation of the Scaling of Fracture Stiffness
Available to PurchasePublisher: American Rock Mechanics Association
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
Shear-Stress Monitoring on a Rough Fracture Using Seismic Wave Scattering
Available to PurchasePublisher: American Rock Mechanics Association
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
Monitoring a Propagating Front: Exploiting Fresnel Precursors from Fractures
Available to PurchasePublisher: American Rock Mechanics Association
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
The Effect Of Scale On Seismic Monitoring Of A Fracture Subjected To Reactive Fluid Flow.
Available to PurchasePublisher: American Rock Mechanics Association
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
On the thermoporoelastic properties of fractured reservoir rocks
Available to PurchasePublisher: American Rock Mechanics Association
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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