A numerical study of neutrally buoyant slickwater proppant flow and transport in rough fractures
نویسندگان
چکیده
Influence of rough rock surface geometry on flow behavior for single and multiple neutrally buoyant particles in fractures is explored. Degree roughness evaluated by varying synthetic surfaces’ root-mean-square asperity height fractal dimension. Influences Reynolds number multiparticle volumetric concentration are also considered. Simulated within fluid performed utilizing resolved computational dynamics with the Discrete Element Method. Behavior fracture apertures contrasted against smooth wall fractures. Findings show accentuation particle transport rate some at intermediate diameter to mechanical aperture ratio values. Further narrowing past these values leads increased particle–wall collision interactions, causing attenuation eventual arrest. Mechanical where arrest occurs appreciably larger than largely depend dimension root-mean-square. Multiparticle evaluations reveal that interactions lead varied hydraulic Hydraulic found be dependent combined effects from injection moderate aperture, increasing importance as narrows. Further, it jamming depends more injected concentration. This work provides a unique micro-level perspective slurry interfaces, pointing shortcomings assumed analogous smooth-walled face behavioral characterizations utilized investigations.
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ژورنال
عنوان ژورنال: Geomechanics for Energy and the Environment
سال: 2022
ISSN: ['2352-3808']
DOI: https://doi.org/10.1016/j.gete.2021.100266