Results 11 to 20 of about 145,183 (304)
Mathematics, 2021 In this paper, we present a multiscale model reduction technique for unsaturated filtration problem in fractured porous media using an Online Generalized Multiscale finite element method. The flow problem in unsaturated soils is described by the Richards
Denis Spiridonov +3 more
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Linearised Inversion of Vertically Fractured Media [PDF]
61st EAGE Conference and Exhibition, 1999 In the recent years several authors (Haugen at al., 1996; Lynn at al., 1995; Zillmer at al., 1998) have studied the characterization of horizontal transverse isotropic (HTS) equivalent fractured media by means of AVO and AVA analysis.
M. Beretta +2 more
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Scale dependency of fractional flow dimension in a fractured formation [PDF]
Hydrology and Earth System Sciences, 2011 The flow dimensions of fractured media were usually predefined before the determination of the hydraulic parameters from the analysis of field data in the past.
Y.-C. Chang +3 more
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Pneumatic fractures in confined granular media [PDF]
Physical Review E, 2017 We perform experiments where air is injected at a constant overpressure P_{in}, ranging from 5 to 250 kPa, into a dry granular medium confined within a horizontal linear Hele-Shaw cell. The setup allows us to explore compacted configurations by preventing decompaction at the outer boundary, i.e., the cell outlet has a semipermeable filter such that ...
Eriksen, Fredrik K. +4 more
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Reactive Flow in Fractured Porous Media [PDF]
, 2020 In this work we present a model reduction procedure to derive a hybrid-dimensional framework for the mathematical modeling of reactive transport in fractured porous media. Fractures are essential pathways in the underground which allow fast circulation of the fluids present in the rock matrix, often characterized by low permeability.
A. Fumagalli, A. Scotti
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Energies, 2022 Gypsum dissolution leads to the development of karstic features within much shorter timescales than in other sedimentary rocks, potentially leading to rapid deterioration of groundwater quality and increasing the risk of catastrophes caused by subsidence.
Jesús F. Águila +4 more
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Geosciences, 2022 When conducting numerical upscaling, either for a fractured or a porous medium, it is important to account for anisotropy because in general, the resulting upscaled conductivity is anisotropic.
Philippe Renard, Rachid Ababou
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Study on the upscaling transformation of hydraulic conductivity in fractured media
地质科技通报, 2023 Objective It is very important to study the upscaling transformation of hydraulic conductivity in fracture media for accurately characterizing the seepage field characteristics.
Xiaofei Dong +4 more
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Robust Discretization of Flow in Fractured Porous Media [PDF]
, 2017 Flow in fractured porous media represents a challenge for discretization methods due to the disparate scales and complex geometry. Herein we propose a new discretization, based on the mixed finite element method and mortar methods.
Boon, Wietse M. +2 more
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Oil & Gas Science and Technology, 2020 Numerical modeling of two-phase flows in heterogeneous and fractured media is of great interest in petroleum reservoir engineering. The classical model for two-phase flows in porous media is not completely thermodynamically consistent since the energy ...
Gao Huicai +3 more
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