Análise de modelo numérico visando aplicação no processo de deposição de partículas

Abstract

The loss of drilling fluid circulation is one of the most common problems encountered in oil well drilling processes, either directly through fluid loss itself or indirectly through the time lost due to the need to interrupt the process. One proposed solution is using solid particles dispersed within the drilling fluid to mitigate these losses partially or entirely. The particle bed model for loss containment has shown promise, especially when drilling impermeable rocks, which is a limitation of several other models previously proposed in the literature and used in the field. This work employs a numerical approach to address this problem and aims to obtain characteristics of the dynamic behavior of the particles. The Discrete Element Method coupled with the Discrete Dense Phase Model is recommended to simulate this type of problem, adopting the Euler-Lagrange approach to simulate the interactions between the continuous liquid phase and a dispersed phase composed of a certain number of particles. The present study aims to verify the numerical models using Ansys Fluent [trade mark] software for cases such as the terminal velocity of a particle, and particle-surface collisions.