[1] We investigate the effects of the porosity (and thus permeability) of porous matrix and the fracture aperture on transport in fractured porous media. We do so with detailed lattice Boltzmann simulations on constructed porous media with a single fracture. Both plume spatial moments (the average plume velocity and the dispersion coefficients) and mass transfer coefficients between the facture...

This paper presents a two-dimensional pore-scale network model of a rough-walled fracture whose inner structure had been mapped using x-ray microtomography. The model consists of a rectangular lattice of conceptual pores and throats representing local aperture variations. It is a two-phase model that takes into account capillary, viscous, and gravity forces. Mapping of fluids and fracture topol...

The invasion of DNAPL into fractured low permeability deposits results in the formation of secondary source zones that represent a long-term source of VOCs to adjacent aquifers. We present data from a site underlain by a fractured mudstone contaminated with TCE DNAPL that was poised for release following remediation of the overlying aquifer. Observations of contaminant distributions and fractur...

Abstract Characterization of fluid flow through rough fractures is an important issue in designing underground excavations, such as nuclear repositories or geothermal applications. Fluid could be influenced by several parameters contact areas, aperture, hydraulic and mechanical conditions. Contact area aperture two crucial geometrical factors which control behaviors fractures. These are rarely ...

The transport of chemically reactive fluids through fractured clay-rich rocks is fundamental to many subsurface engineering technologies. Here, we present results direct-shear laboratory experiments with simultaneous imaging by X-ray Computed Tomography in Opalinus claystone subsequent fluid injection unravel the interplay between mechanical fracture deformation, sorption, and flow. Under const...

This paper deals with the construction of tip asymptotes for a hydraulic fracture deflating in permeable elastic medium. Specifically, describes changing nature asymptotic fields during arrest and recession phases following propagation after fluid injection has ended. It shows that as deflates phase, region dominance linear mechanics asymptote $w\sim x^{1/2}$ aperture $w$ distance $x$ from fron...

Carbonate reservoirs are one of the most important fossil fuel sources, and acidizing stimulation is a practical technique for improving recovery carbonate reservoirs. In this study, improved two-scale continuum model, including representative elementary volume (REV) scale model upscaling used to study process with an isolated fracture. Based on comprehensive discussion presented effect physica...

We solve a problem of fluid dynamics in an arbitrarSignificant progress has been made in the quantitative ily shaped fracture containing proppant. The fracture modeling of the dynamic interaction of a fracture with is embedded in an absolutely rigid solid. The fluid flow surrounding elastic rock. Using the finite-difference method, is induced by normal harmonic oscillations of fracture Chouet (...