Effect of fracture roughness on the hydrodynamics of proppant transport in hydraulic fractures

摘要: 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. equations governing the physics fracturing fluid solved hybrid computational dynamics model. reported models literature are limited to assumption smooth domain with no leak-off or flow from rock matrix interface. In this paper, model proposed that accounts for distribution rough geometry surrounding porous rock. hydrodynamic mechanical behaviour was found directly related regime especially under influence low viscosity typically used shale gas reservoirs. For fractures, walls employ retardation effects reduce horizontal velocity resulting more significant deposition. On contrary, inter-proppant wall interactions become dominant adds turbulence flow. It results interaction becoming consequently higher proppants suspended slurry greater velocity. Furthermore, were be principally dependant at Reynolds number.