Eulerian multifluid simulations of proppant transport with different sizes

Proppant transport is critical in hydraulic fractures and enhanced geothermal systems. essentially a dense granular flow narrow slots, the Euler–Euler methods are commonly used to study principle of proppant at field scale. However, simulated results cannot reproduce laboratory observations well because some closure equations not suitable for describing quasi-static state proppants after settlement, only monodisperse considered simulations, which neglects interaction between large small particles. To improve applicability numerical simulation fracturing treatment, binary-size simulations using Eulerian multifluid method (EMM) performed this study. First, motion characteristics suspended settled were analyzed kinetic theory (KTGF) frictional viscous Thereafter, solid–liquid momentum exchange considering wall retardation effect solid–solid endurable contact among particles discussed. Finally, qualitatively quantitatively verified experiments particle image velocimetry tests. The combination traditional KTGF models exhibits better performance than modified when inertia regime simulation, contribution viscous-particle cohesion friction must be considered. Notably, close experimental development process sand banks velocity distribution This efficient computing it will provide new insights into pumping procedure design fracturing.