Results 21 to 30 of about 21,573 (293)
Journal of Petroleum Exploration and Production TechnologyIn fractured reservoirs, the fracture network provides the main path for fluid flow. Appropriate estimation of the fracture permeability influences the precise prediction of the reservoir’s future performance. Commonly, for a known geometry of natural or
Farshid Valizadeh +4 more
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Dispersion of inert particles in a rough fracture.
, 2001 This paper aims to show a transport model of either smooth or rough fractures. These are numerically generated by means of a fractal surface method. In order to study dispersion processes, a 3D transport model is used. This model is based on a random walk that takes into account both the sizes of the particles and the size exclusion effect of particles
Fleurant, Cyril, Jeong, Woo Chang
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Case Studies in Thermal EngineeringRough-walled properties of fractures lead to complex flow behavior, resulting in an intricate heat transfer process between fractures and fluids during heat mining in enhanced geothermal systems.
Yun Chen, Dai He, Chunlei Ma, Guowei Ma
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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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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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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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