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Experimental Study of Fracturing Fluid Retention in Rough Fractures [PDF]
Geofluids, 2019 Multistage hydraulic fracturing is a key technology for developing tight reservoirs. Field data indicate that a small fraction of the injected water can be recovered during flowback. Fractures play an important role in the retention of fracturing fluid, but the mechanisms and rules remain uncertain.
Yanjun Zhang +7 more
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How Material Heterogeneity Creates Rough Fractures
Physical Review Letters, 2022 Fractures are a critical process in how materials wear, weaken, and fail whose unpredictable behavior can have dire consequences. While the behavior of smooth cracks in ideal materials is well understood, it is assumed that for real, heterogeneous systems, fracture propagation is complex, generating rough fracture surfaces that are highly sensitive to ...
Will Steinhardt, Shmuel M. Rubinstein
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Fracture toughness characterization of thin Ti/SiC composites [PDF]
, 2011 Titanium based alloys reinforced uniaxially with silicon carbide fibres (Ti/SiC) are advanced and innovative materials for aerospace vehicles.
Ma, Wei
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Critical point network for drainage between rough surfaces [PDF]
, 2007 In this paper, we present a network method for computing two-phase flows between two rough surfaces with significant contact areas. Low-capillary number drainage is investigated here since one-phase flows have been previously investigated in other ...
Plouraboué, Franck +9 more
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Effect of fracture roughness on permeability coefficient under uniaxial compression
工程科学学报, 2021 The surface roughness of natural rock-fractures is an important factor affecting the fractured rock mass flow characteristics and further complicating the flow process in the natural fractures.
Shuai WANG, Qing-lei YU, Ling WANG
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Tracer dispersion in two-dimensional rough fractures [PDF]
Physical Review E, 2001 Tracer diffusion and hydrodynamic dispersion in two-dimensional fractures with self-affine roughness is studied by analytic and numerical methods. Numerical simulations were performed via the lattice-Boltzmann approach, using a new boundary condition for tracer particles that improves the accuracy of the method. The reduction in the diffusive transport,
Drazer, German, Koplik, Joel
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Analysis of the influence of grouting on stress field of coal and rock mass with rough crack
Meikuang Anquan, 2021 In order to study the distribution law of the stress field in the rough fractures hiding in coal and rock mass during the grouting process, the two-dimensional rough fracture profile is generated according to the random midpoint displacement method, and
ZHANG Jiafan +4 more
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The Effect of Fracture Roughness on the Onset of Nonlinear Flow [PDF]
Water Resources Research, 2020 AbstractIn fractures where surface fluctuations are large compared to their aperture (narrow fractures), the flow is forced to move in tortuous paths that produce additional viscous friction and are subject to inertia effects. We consider the relation between the magnitude of surface roughness and the onset of inertial effects in the pressure driving ...
D. Cunningham +3 more
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Averaged Reynolds Equation for Flows between Rough Surfaces in Sliding Motion [PDF]
, 2002 The flow between rough surfaces in sliding motion with contacts between these surfaces, is analyzed through the volume averaging method. Assuming a Reynolds (lubrication) approximation at the roughness scale, an average flow model is obtained combining ...
Prat, Marc +2 more
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A Modified Cubic Law for Rough-Walled Marble Fracture by Embedding Peak Density
Advances in Civil Engineering, 2020 The property of water flow through a single rock fracture is the base of describing the seepage characteristics of jointed rock mass. Five artificial tensile fractures of coarse-grained cylinder marble samples were made at about the midpoint of the long ...
Baohua Guo +4 more
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