NUMERICAL STUDY OF NON-NEWTONIAN FLUID FLOW THROUGH THE ANNULUS BETWEEN TWO CIRCULAR CYLINDERS, APPLICATION TO DRILLING MUDS AND/OR CRUDE OIL

Abstract

Drilling fluids play a key role in the well drilling operation. They are essential in maintaining pressure balance inside the wellbore. One of the most influential properties of a drilling fluid is its viscosity. Understanding the role of viscosity in drilling and other operations and the ability to match viscosity requirements to prevailing conditions for that requirement is a key factor in optimizing fluid efficiency. the term rheology, which defined as the study of the deformation and flow of matter. The Finite Volume Method (FVM) is a numerical technique that transforms the partial differential equations representing conservation laws over differential volumes into discrete algebraic equations over finite volumes (or elements, cells or meshes). Computational fluid dynamics (CFD) analysis was performed to investigate the hydraulics of a solid-free non-Newtonian drilling fluid with an eccentric annulus coupled with a rotating drill string.