Computational Fluid Dynamics Simulation and Analysis of Non-Newtonian Drilling Fluid Flow and Cuttings Transport in an Eccentric Annulus
This study examines the flow behavior as well as the cuttings transport of non-Newtonian drilling fluid in the geometry of an eccentric annulus, accounting for what impacts drill pipe rotation might have on fluid velocity, as well as annular eccentricity on axial and tangential distributions of velo...
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MDPI AG
2024-12-01
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| Series: | Mathematics |
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| Online Access: | https://www.mdpi.com/2227-7390/13/1/101 |
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| author | Muhammad Ahsan Shah Fahad Muhammad Shoaib Butt |
| author_facet | Muhammad Ahsan Shah Fahad Muhammad Shoaib Butt |
| author_sort | Muhammad Ahsan |
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| description | This study examines the flow behavior as well as the cuttings transport of non-Newtonian drilling fluid in the geometry of an eccentric annulus, accounting for what impacts drill pipe rotation might have on fluid velocity, as well as annular eccentricity on axial and tangential distributions of velocity. A two-phase Eulerian–Eulerian model was developed by using computational fluid dynamics to simulate drilling fluid flow and cuttings transport. The kinetic theory of granular flow was used to study the dynamics and interactions of cuttings transport. Non-Newtonian fluid properties were modeled using power law and Bingham plastic formulations. The simulation results demonstrated a marked improvement in efficiency, as much as 45%, in transport by increasing the fluid inlet velocity from 0.54 m/s to 2.76 m/s, reducing the amount of particle accumulation and changing axial and tangential velocity profiles dramatically, particularly at narrow annular gaps. At a 300 rpm rotation, the drill pipe brought on a spiral flow pattern, which penetrated tangential velocities in the narrow gap that had increased transport efficiency to almost 30% more. Shear-thinning behavior characterizes fluid of which the viscosity, at nearly 50% that of the central core low-shear regions, was closer to the wall high-shear regions. Fluid velocity and drill pipe rotation play a crucial role in optimizing cuttings transport. Higher fluid velocities with controlled drill pipe rotation enhance cuttings removal and prevent particle build-up, thereby giving very useful guidance on how to clean the wellbore efficiently in drilling operations. |
| format | Article |
| id | doaj-art-0dddb601a18640e6b6088b5354af5d4d |
| institution | Kabale University |
| issn | 2227-7390 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Mathematics |
| spelling | doaj-art-0dddb601a18640e6b6088b5354af5d4d2025-01-10T13:18:15ZengMDPI AGMathematics2227-73902024-12-0113110110.3390/math13010101Computational Fluid Dynamics Simulation and Analysis of Non-Newtonian Drilling Fluid Flow and Cuttings Transport in an Eccentric AnnulusMuhammad Ahsan0Shah Fahad1Muhammad Shoaib Butt2School of Chemical & Materials Engineering, National University of Sciences & Technology, Islamabad 44000, PakistanSchool of Chemical & Materials Engineering, National University of Sciences & Technology, Islamabad 44000, PakistanSchool of Chemical & Materials Engineering, National University of Sciences & Technology, Islamabad 44000, PakistanThis study examines the flow behavior as well as the cuttings transport of non-Newtonian drilling fluid in the geometry of an eccentric annulus, accounting for what impacts drill pipe rotation might have on fluid velocity, as well as annular eccentricity on axial and tangential distributions of velocity. A two-phase Eulerian–Eulerian model was developed by using computational fluid dynamics to simulate drilling fluid flow and cuttings transport. The kinetic theory of granular flow was used to study the dynamics and interactions of cuttings transport. Non-Newtonian fluid properties were modeled using power law and Bingham plastic formulations. The simulation results demonstrated a marked improvement in efficiency, as much as 45%, in transport by increasing the fluid inlet velocity from 0.54 m/s to 2.76 m/s, reducing the amount of particle accumulation and changing axial and tangential velocity profiles dramatically, particularly at narrow annular gaps. At a 300 rpm rotation, the drill pipe brought on a spiral flow pattern, which penetrated tangential velocities in the narrow gap that had increased transport efficiency to almost 30% more. Shear-thinning behavior characterizes fluid of which the viscosity, at nearly 50% that of the central core low-shear regions, was closer to the wall high-shear regions. Fluid velocity and drill pipe rotation play a crucial role in optimizing cuttings transport. Higher fluid velocities with controlled drill pipe rotation enhance cuttings removal and prevent particle build-up, thereby giving very useful guidance on how to clean the wellbore efficiently in drilling operations.https://www.mdpi.com/2227-7390/13/1/101non-Newtonian drilling fluideccentric annuluscuttings transportdrill pipe rotationcomputational fluid dynamics simulation |
| spellingShingle | Muhammad Ahsan Shah Fahad Muhammad Shoaib Butt Computational Fluid Dynamics Simulation and Analysis of Non-Newtonian Drilling Fluid Flow and Cuttings Transport in an Eccentric Annulus Mathematics non-Newtonian drilling fluid eccentric annulus cuttings transport drill pipe rotation computational fluid dynamics simulation |
| title | Computational Fluid Dynamics Simulation and Analysis of Non-Newtonian Drilling Fluid Flow and Cuttings Transport in an Eccentric Annulus |
| title_full | Computational Fluid Dynamics Simulation and Analysis of Non-Newtonian Drilling Fluid Flow and Cuttings Transport in an Eccentric Annulus |
| title_fullStr | Computational Fluid Dynamics Simulation and Analysis of Non-Newtonian Drilling Fluid Flow and Cuttings Transport in an Eccentric Annulus |
| title_full_unstemmed | Computational Fluid Dynamics Simulation and Analysis of Non-Newtonian Drilling Fluid Flow and Cuttings Transport in an Eccentric Annulus |
| title_short | Computational Fluid Dynamics Simulation and Analysis of Non-Newtonian Drilling Fluid Flow and Cuttings Transport in an Eccentric Annulus |
| title_sort | computational fluid dynamics simulation and analysis of non newtonian drilling fluid flow and cuttings transport in an eccentric annulus |
| topic | non-Newtonian drilling fluid eccentric annulus cuttings transport drill pipe rotation computational fluid dynamics simulation |
| url | https://www.mdpi.com/2227-7390/13/1/101 |
| work_keys_str_mv | AT muhammadahsan computationalfluiddynamicssimulationandanalysisofnonnewtoniandrillingfluidflowandcuttingstransportinaneccentricannulus AT shahfahad computationalfluiddynamicssimulationandanalysisofnonnewtoniandrillingfluidflowandcuttingstransportinaneccentricannulus AT muhammadshoaibbutt computationalfluiddynamicssimulationandanalysisofnonnewtoniandrillingfluidflowandcuttingstransportinaneccentricannulus |