2018
DOI: 10.1002/2017jb015057
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Experiments and Simulations of Fully Hydro‐Mechanically Coupled Response of Rough Fractures Exposed to High‐Pressure Fluid Injection

Abstract: In this work, we present the application of a fully coupled hydro‐mechanical method to investigate the effect of fracture heterogeneity on fluid flow through fractures at the laboratory scale. Experimental and numerical studies of fracture closure behavior in the presence of heterogeneous mechanical and hydraulic properties are presented. We compare the results of two sets of laboratory experiments on granodiorite specimens against numerical simulations in order to investigate the mechanical fracture closure a… Show more

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Cited by 90 publications
(53 citation statements)
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“…The inflow rate is calculated by integrating the fluid velocity over the x-plane cross-section at the left side (inflow direction) of the y-plane. The total fluid flow rate through the fracture changes most drastically at initial normal load increases during small normal loads, where fractures are known to experience the largest aperture closure relative to increases in normal load [3,25,54,46,22]. While fracture closure is more pronounced during early normal loading stages, fluid flow paths through regions of large aperture widths persist even at higher loading stages, as their large-aperture regions may not close entirely (Fig.…”
Section: Fluid Flow In Closing Fracturementioning
confidence: 99%
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“…The inflow rate is calculated by integrating the fluid velocity over the x-plane cross-section at the left side (inflow direction) of the y-plane. The total fluid flow rate through the fracture changes most drastically at initial normal load increases during small normal loads, where fractures are known to experience the largest aperture closure relative to increases in normal load [3,25,54,46,22]. While fracture closure is more pronounced during early normal loading stages, fluid flow paths through regions of large aperture widths persist even at higher loading stages, as their large-aperture regions may not close entirely (Fig.…”
Section: Fluid Flow In Closing Fracturementioning
confidence: 99%
“…For the mechanical behavior of a fracture, the highly variable fracture surface topographies yield a complex distribution of contact area and a nonlinear mechanical response to normal or shear loading [3,36,19,25,49,40]. Mechanical loading normal to the fracture surface results in convergent fracture closure behavior with increasing load, as more and more area of the fracture comes into contact and local compressive stresses at contact areas increase [3,37,25,54,44,47,46,22].…”
Section: Introductionmentioning
confidence: 99%
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“…Specifically, increasing mechanical load normal to the fracture yields nonlinear, convergent fracture closure behavior, where increasingly larger load increments have to be applied for a given closure increment [4,35,72,61,62]. Changes of the mechanical loading distribution on the fracture alter contact area and the aperture distribution across the fracture plane, which will yield complex aperture fields [60,40,63]. As a result, fluid flow fields in these aperture fields become highly heterogeneous and change with the loading [59,8,74,73].…”
Section: Introductionmentioning
confidence: 99%
“…Ewing and Jaynes [16] also conducted extensive numerical studies on factors such as size of the fracture and shape of the mesh that affect solute transport in a single fracture, and Jeong and Song [10] examined fluid flow and solute transport in a single fracture with variable aperture distribution that is generated using fractal technique. Recently, Vogler et al [17] presented the fully coupled hydro-mechanical method to investigate the effect of fracture heterogeneity on fluid flow through fractures at laboratory scale but they did not consider solute transport in fractures with hydro-mechanical effect.…”
Section: Introductionmentioning
confidence: 99%