Improved model for solute transport in heterogeneous porous media

Bai, M.; Bouhroum, A.; Civan, Faruk; Roegiers, J.-C.

doi:10.1016/0920-4105(95)00024-0

Cited by 15 publications

(5 citation statements)

References 20 publications

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“…Two popular dual-porosity, dual-zone models are the capacitance model, whose zones are micropores and macropores, and the dual porosity model, whose zones are the matrix and fractures. The basic difference between the two methods is the geometric scale of the primary flow channels; fractures have a higher permeability capacity than macropores (Bai et al, 1995). Otherwise, both models have a similar configuration as illustrated in Figure 2.…”

Section: Dual Porosity -Dual Zone Modelmentioning

confidence: 97%

“…Although the experiments could not prove the physical existence of a stagnant volume, that is the thin film in the differential capacitance model, they were able to explain the observed asymmetry and early breakthrough curve at 50% concentration. The capacitance model was further developed and semi-analytically solved by Bai et al (1995Bai et al ( , 1999. For further study of the dual-porosity, dual-zone model, one can refer to the works of Deans (1963), Passioura and Rose (1971), Sudicky and McLaren (1992), and Zhang and Smith (2001).…”

Section: Dual Porosity -Dual Zone Modelmentioning

confidence: 99%

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Modeling Contaminant Transport at the Pore-Micropore Interface

Bagtzoglou

Kim

2006

Water Air Soil Pollut: Focus

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Understanding and ultimately simulating the contaminant transport processes occurring in, or around, micropore zones is a topic that will help further the advancement of efficient design and implementation of future remediation techniques. This paper proposes a method to forecast effects of micropores on contaminant transport using a new conceptual method that is based on a model that comprises three zones, namely mobile, immobile, and micropore zones and has two different porosity zones. The model is successfully tested against other established methods (van Genuchten and Wierenga, 1976) and experimental data (Brusseau, 1993).

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Section: Dual Porosity -Dual Zone Modelmentioning

confidence: 97%

Section: Dual Porosity -Dual Zone Modelmentioning

confidence: 99%

Modeling Contaminant Transport at the Pore-Micropore Interface

Bagtzoglou

Kim

2006

Water Air Soil Pollut: Focus

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“…For rocks with high permeability, most of the pore channels are relatively large and are not easily blocked by salt crystals. In addition, the dispersed crystalline salt particles are more likely to migrate in cores with better permeability [26][27][28]. Therefore, the permeability of the shale sample with high permeability will slightly decrease after the salt crystallizes.…”

Section: Influence On Porosity Andmentioning

confidence: 99%

The Influence of Injected Fluids on Microscopic Pore Structures in the Intersalt Dolomitic Shale Oil Reservoirs

Zhou

Yan

et al. 2019

Geofluids

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Given their low porosity and permeability, intersalt dolomitic shale oil reservoirs need to be developed via large-scale hydraulic fracturing to achieve economic effects. However, various lithologies and salt materials make these reservoirs vulnerable to salt mineral dissolution and recrystallization and salt plugging during development. This study investigated the variation rules of pore structures, porosity, and permeability of intersalt dolomitic shale oil reservoirs under the influence of hydraulic fracturing fluid. Correspondingly, a series of experiments (i.e., high-temperature and high-pressure soaking experiments, focused ion beam scanning helium ion microscope analyses, and porosity and pulse permeability tests) is performed on the Qian 34-10 rhythmic intersalt dolomitic shales. Results show that distilled water dissolves the salt crystals inside the matrix pores to improve the reservoir permeability. However, the distilled water-rock interaction will cause the massive migration of salt minerals. By contrast, the supercritical CO2 can disperse salt particles, dredge the channels, and enlarge pores by expansion, but it has an overall weak capability of changing the pore structure and matrix permeability. To simulate the supercritical CO2 composite fracturing, the mixed solution of supercritical CO2 and distilled water favors the salt dissolution effect in the water-based fracturing fluid and recovery enhancement by CO2. This solution can remarkably improve the reservoir porosity and permeability and avoid massive salt mineral migration and salt crystallization damage. This study is theoretically and practically important to the effective and enhanced development of intersalt dolomitic shale oil reservoirs.

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“…However, when reservoir formation is highly heterogeneous, a multi-porosity and multi-permeability media treatment is necessary as depicted in Fig. 9 (Bai et al, 1995). Consequently, the model becomes complicated as similar equations need to be solved in different media.…”

Section: Phenomenological Modeling Of the Particulate Processes In Hementioning

confidence: 99%

Formation Damage Mechanisms and Their Phenomenological Modeling—An Overview

Civan

2007

European Formation Damage Conference

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fax 01-972-952-9435. AbstractA review and phenomenological modeling of the various processes causing reservoir formation damage are presented. The mechanisms involved in the migration, deposition, and mobilization of the fine particles and inorganic and organic precipitates are described physically and mathematically. The various problems created by fine particles at the pore surface, clogging and dislodgment of the pore throats, aggregation, and interface particle transfer processes in multi-phase fluid systems flowing through porous media are described. The implications of the various mechanical, chemical, and thermal processes on the behavior of the particles are discussed. The various types of shock phenomena and their effects on the particulate processes are explained. The alteration of the pore connectivity, preferential hydraulic paths, permeability and porosity of porous media as a result of the various particulate processes are formulated. The phenomenological modeling of the particulate processes in single-and multiple-porosity reservoir formations is presented. The applications may concern with the damage by particles, injectivity decline in waterflooding wells, formation damage by drilling mud invasion, formation damage in naturally fractured reservoirs, asphaltene deposition, and sand production and gravel pack damage.

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Improved model for solute transport in heterogeneous porous media

Cited by 15 publications

References 20 publications

Modeling Contaminant Transport at the Pore-Micropore Interface

Modeling Contaminant Transport at the Pore-Micropore Interface

The Influence of Injected Fluids on Microscopic Pore Structures in the Intersalt Dolomitic Shale Oil Reservoirs

Formation Damage Mechanisms and Their Phenomenological Modeling—An Overview

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