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COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Numerical simulation of particulate flow for static mud cake process over heterogeneous porous media
Submission Author:
Guilherme Hanauer de Lima , PR , France
Co-Authors:
Fernando Cesar De Lai, Silvio L. M. Junqueira, Guilherme Hanauer de Lima
Presenter: Guilherme Hanauer de Lima
doi://10.26678/ABCM.COBEM2017.COB17-5950
Abstract
The lost circulation of drilling fluid, a phenomenon of commonly found in oil industry, occurs whenever the drilling fluid at higher pressure flows from the annulus region towards the porous formation. Besides carrying polymeric particles and fragments of the perforated substrate materials, such flow can also carry solids especially designed to mitigate the lost circulation. In that sense, the walls of the substrate can serve as a filter for the particles carried by the flow and a packed bed of particles may eventually form. In this work, the numerical simulation of the particle flow through a vertical porous channel is performed. The porous substrate is modelled as a macroscopic porous medium, where the solid phase is represented by disconnected cylinders immersed in a water-glycerin solution. An Euler-Lagrange approach given by the combination of the Dense Discrete Phase Model (DDPM) with the Discrete Element Method (DEM), respectively, is applied to the coupled solution of the continuum (fluid) and the discrete phases (particles). Effects of the porous domain permeability, diameter and mass flow rate of the particles over the pressure and the permeability after the particles deposition are investigated. The raise of the injected particles concentration is proportional to the pressure drop and to the growth in the particle bed thickness, reducing the permeability through the medium.
Keywords
Particulate flow, lost circulation, Mud cake, Heterogeneous porous media, DDPM-DEM
