4.5 Article

CFD Analysis of Turbulent Flow of Power-Law Fluid in a Partially Blocked Eccentric Annulus

期刊

ENERGIES
卷 14, 期 3, 页码 -

出版社

MDPI
DOI: 10.3390/en14030731

关键词

CFD; annular flow; bed shear stress; velocity profile; turbulent flow

资金

  1. Qatar National Research Fund [NPRP11S1228-170140]

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This study analyzed the turbulent flow of drilling fluid in inclined wells using the Computational Fluid Dynamics (CFD) technique, establishing a correlation for optimizing hole cleaning and managing downhole pressure. The prediction results were validated and showed a discrepancy of up to 10% when compared with simulation data.
This study focuses on analyzing the turbulent flow of drilling fluid in inclined wells using the Computational Fluid Dynamics (CFD) technique. The analysis is performed considering an annulus with a fixed eccentricity of 90% and varying fluid properties, diameter ratio, and bed thickness to examine velocity profile, pressure loss, and overall wall and average bed shear stresses. CFD simulation results are compared with existing data for validation. The pressure loss predicted with CFD agrees with the data. After verification, predictions are used to establish a correlation that can be applied to compute bed shear stress. The established correlation mostly displays a discrepancy of up to 10% when compared with simulation data. The correlation can be used to optimize hole cleaning and manage downhole pressure.

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