Reactive Transport in Fractured Permeable Porous Media

Sharma, Pramod K.; Joshi, Nitin; Srivastava, Rajesh; Ojha, C. S. P.

doi:10.1061/(asce)he.1943-5584.0001096

Cited by 7 publications

(3 citation statements)

References 24 publications

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“…The listed applications take place mainly in weakly cemented porous media because of their larger pore networks, which, for example, can store oil and gas but also CO 2 or H 2 while it can be used for transportation of various fluids [23][24][25][26]. Weakly cemented porous media describe a wide range of materials representing a transition between soils and rocks, sharing common characteristics with both.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Effects of Porosity, Hydraulic Conductivity, Strength, and Flow Rate on Fluid Flow in Weakly Cemented Bio-Treated Sands

Konstantinou

Biscontin

2022

Hydrology

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Fluid injection in a porous medium is the underlying mechanism for many applications in the fields of groundwater hydraulics, hydrology and hydrogeology, and geo-environmental engineering and in the oil and gas industry. Fluid flow experiments in porous media with a viscous fluid at varying injection rates were conducted in a modified Hele-Shaw setup. The granular media were three-dimensional bio-cemented sands of various grain sizes across various cementation levels, generating a matrix of various hydraulic conductivities, porosities, and strengths. The fluid injection experiments showed that a cavity-like fracture developed, which transitioned to crack-like fractures at higher cementation levels (hence, higher strength). As the flow rate increased, less infiltration was evident and higher breakdown pressure was observed, with propagation pressure reducing to zero. It was harder to induce an opening in cemented specimens with higher hydraulic conductivity and a larger pore network despite their lower strength due to excessive infiltration dominance, which inhibited the build-up of pressure required to generate a fracture. The results of this study suggest that, when designing fluid injection programs, the combined effects of hydraulic conductivity and strength need to be carefully considered.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Effects of Porosity, Hydraulic Conductivity, Strength, and Flow Rate on Fluid Flow in Weakly Cemented Bio-Treated Sands

Konstantinou

Biscontin

2022

Hydrology

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“…However, very few studies consider the nonequilibrium sorption in the fractured porous media [ Maloszewski and Zuber , ; Lee and Teng , ; Berkowitz and Zhou , ; Xu and Worman , ; Bodin et al ., , Ojha et al ., ; Joshi et al ., ; Sharma et al ., ]. Most of the available models neglect the effect of sorption kinetics in the fracture‐matrix system and are based on the local equilibrium assumption (LEA).…”

Section: Introductionmentioning

confidence: 99%

Application of nonequilibrium fracture matrix model in simulating reactive contaminant transport through fractured porous media

et al. 2015

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Nonequilibrium and nonlinear sorption of the contaminants in the fractured porous media could significantly influence the shape of the breakthrough curve (BTC). For the fracture-matrix system, there are very few studies which consider these processes. In this study, the nonequilibrium fracture-matrix model with two different nonlinear sorption isotherms, namely nonlinear Freundlich and Langmuir sorption isotherms were developed. The effect of sorption nonlinearity and nonequilibrium conditions on the shape of the BTC was studied using the temporal moments. The developed models along with the linear equilibrium, linear nonequilibrium fracture matrix models, and the multirate mass transfer model were used to simulate the BTC, which were compared with the experimental data available in the literature. Both sorption nonequilibrium and nonlinearity were found to significantly influence the shape of the BTC. Presence of sorption nonlinearity reduces the solute spreading, whereas presence of nonequilibrium conditions increases the solute spreading. Considering the sorption nonequilibrium along with the sorption nonlinearity leads to an improved simulation of the BTC. The nonequilibrium nonlinear sorption models could simulate the extended BTC tailing resulting from sorption nonlinearity and rate-limited interaction in the fracture-matrix system.

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“…It was found that the distance-dependent dispersion model describes the solute transport more effectively than the constant dispersion model. A hybrid finite volume method was used to solve the non-equilibrium transport model for solute in the fracture and study the behavior of concentration profiles with different transport parameters [14].…”

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confidence: 99%

Numerical Study of Contaminant Transport in Fractured Porous Rock with Distance Dependent Dispersivity

Sharma¹,

Kakani²,

Shukla³

2016

JWRHE

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Abstract-This paper presents solute concentration profiles with constant, linear and exponential distance-dependent dispersion models for solute transport through fractured porous rock matrices. A numerical analysis has been developed for solution of the equations governing the dispersion model using the hybrid finite volume method. The results of the numerical analysis have been used to investigate the effect of the matrix diffusion coefficient, fracture velocity, and matrix and fracture retardation factors on concentration profiles. It is found that in the presence of higher matrix diffusion coefficients, the behaviour of concentration profiles is different for constant and distance-dependent dispersion models. However, the behaviour of concentration profiles is observed to be nonlinear during the small transport time period, and the matrix diffusion is found to control the spreading of solute in the fracture in the presence of constant and distance-dependent dispersion models.

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Reactive Transport in Fractured Permeable Porous Media

Cited by 7 publications

References 24 publications

Experimental Investigation of the Effects of Porosity, Hydraulic Conductivity, Strength, and Flow Rate on Fluid Flow in Weakly Cemented Bio-Treated Sands

Experimental Investigation of the Effects of Porosity, Hydraulic Conductivity, Strength, and Flow Rate on Fluid Flow in Weakly Cemented Bio-Treated Sands

Application of nonequilibrium fracture matrix model in simulating reactive contaminant transport through fractured porous media

Numerical Study of Contaminant Transport in Fractured Porous Rock with Distance Dependent Dispersivity

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