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Characterization of Proppant Flowback in Hydraulic Fracturing Rough Fractures
Energy Science & EngineeringIn the process of fracturing, proppant flowback is unavoidable, and excessive proppant flowback will cause sand plugging in the wellbore, change the morphology of proppant fractures, reduce the effective flow‐conducting capacity of fractures, weaken the ...
Shou Ma +7 more
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Seepage Characteristics Study of Single Rough Fracture Based on Numerical Simulation
Applied Sciences, 2022 Fracture seepage is an important aspect of groundwater research, but due to the closure of fractures and the randomness of wall surface roughness, it is a challenge to carry out relevant research.
Shidong Wang +4 more
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Proppant transport in rough fractures of unconventional oil and gas reservoirs
Petroleum Exploration and Development, 2023 A method to generate fractures with rough surfaces was proposed according to the fractal interpolation theory. Considering the particle-particle, particle-wall and particle-fluid interactions, a proppant-fracturing fluid two-phase flow model based on ...
Bangtang YIN +9 more
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Influence of the fractures roughness of rock on fluid flow by the lattice Boltzmann method
地质科技通报, 2023 Objective The morphological structure of the fractures in the rock mass is complex, and the fissures rough characteristics of the rock have a great influence on the permeability of the fractures.
Jigang Wang +3 more
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Roughness of fracture surfaces [PDF]
Europhysics Letters (EPL), 2000 We study the fracture surface of three dimensional samples through a model for quasi-static fractures known as Born Model. We find for the roughness exponent a value of 0.5 expected for ``small length scales'' in microfracturing experiments. Our simulations confirm that at small length scales the fracture can be considered as quasi-static. The isotropy
Parisi A., Caldarelli G., Pietronero L.
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Transport in rough self-affine fractures [PDF]
Physical Review E, 2002 Transport properties of three-dimensional self-affine rough fractures are studied by means of an effective-medium analysis and numerical simulations using the Lattice-Boltzmann method. The numerical results show that the effective-medium approximation predicts the right scaling behavior of the permeability and of the velocity fluctuations, in terms of ...
Drazer, German, Koplik, Joel
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Energies, 2022 The well spacing for the development of tight reservoirs by multi-stage fracturing is continuously narrowed. Consequently, interwell interference during fracturing is more and more serious, accompanied by a host of issues in fracturing design and oil and
Yanjun Zhang +4 more
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Phase‐field modeling of rock fractures with roughness [PDF]
International Journal for Numerical and Analytical Methods in Geomechanics, 2022 AbstractPhase‐field modeling—a continuous approach to discontinuities—is gaining popularity for simulating rock fractures due to its ability to handle complex, discontinuous geometry without an explicit surface tracking algorithm. None of the existing phase‐field models, however, incorporates the impact of surface roughness on the mechanical response ...
Fan Fei +3 more
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Effect of fracture roughness on the hydrodynamics of proppant transport in hydraulic fractures [PDF]
Journal of Natural Gas Science and Engineering, 2020 Abstract The effect of fracture roughness is investigated on proppant transport in hydraulic fractures using Joint Roughness Coefficient and a three-dimensional multiphase modelling approach. The equations governing the proppant transport physics in the fracturing fluid is solved using the hybrid computational fluid dynamics model.
Yatin Suri +2 more
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Three-dimensional double-rough-walled modeling of fluid flow through self-affine shear fractures
Journal of Rock Mechanics and Geotechnical Engineering, 2020 This study proposes a double-rough-walled fracture model to represent the natural geometries of rough fractures. The rough surface is generated using a modified successive random additions (SRA) algorithm and the aperture distribution during shearing is ...
Richeng Liu +4 more
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