Particle Settling in shear thinning non-Newtonian drilling fluids : Effect of oscillatory motion
When drilling fluids circulate through the well and during the solids control operations, they are exposed to vibrations and oscillations of different frequencies and amplitudes. The secondary flow structures in oscillatory motion influence the liquid shear rate and rheological characterization of d...
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Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
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Stavanger: Universitety of Stavanger
2020
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Online Access: | https://hdl.handle.net/11250/2672879 |
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Open Polar |
collection |
University of Stavanger: UiS Brage |
op_collection_id |
ftunivstavanger |
language |
English |
topic |
petroleumsteknologi petroleum engineering VDP::Teknologi: 500::Berg‑ og petroleumsfag: 510::Petroleumsteknologi: 512 |
spellingShingle |
petroleumsteknologi petroleum engineering VDP::Teknologi: 500::Berg‑ og petroleumsfag: 510::Petroleumsteknologi: 512 Amaratunga, Polwattage Don Malitha Maduranga Particle Settling in shear thinning non-Newtonian drilling fluids : Effect of oscillatory motion |
topic_facet |
petroleumsteknologi petroleum engineering VDP::Teknologi: 500::Berg‑ og petroleumsfag: 510::Petroleumsteknologi: 512 |
description |
When drilling fluids circulate through the well and during the solids control operations, they are exposed to vibrations and oscillations of different frequencies and amplitudes. The secondary flow structures in oscillatory motion influence the liquid shear rate and rheological characterization of drilling fluids. Hence, oscillations understandably influence the cuttings carrying capacity of the drilling fluids and the solids separation efficiency as well. The majority of pipe flow investigations available in the scientific literature are related to the steady flow. However, more attention should be paid to unsteady flows, since there are many industrial and biological applications in the fields of applied fluid mechanics. As an example, even local geometrical variations and gas kicks in oil-well drilling operations might cause flow instabilities and fluctuations along the pipe trajectory. The problem of shear rate change in time-periodic flows of viscoelastic fluids is relevant in particular for the oil industry, as acknowledged by the research, and also for physiological flows such as blood flow in veins and arteries and the flow of mucus driven by cilia oscillations; hence the interest of the proposed research. This thesis presents a collection of six experimental studies and one numerical study which aims to investigate the effect of zero-mean oscillatory flow on particle settling in shear thinning polymeric non-Newtonian fluids of interest in drilling and maintenance of petroleum wells. In most of the cases, a mixture of water-based polymeric solutions of Polyanionic Cellulose (PAC) and Carboxymethyl Cellulose (CMC) has been employed as the test fluids and in some cases, an individual type of polymer solution has been employed with the viscosifier, Xanthan gum (Xg). The rheological properties of the slightly viscoelastic test fluids have always been characterized in all the sub-studies based on the specific experimental conditions and it is shown that the test fluidsexhibit a shear thinning viscosity in the ... |
author2 |
Time, Rune Wiggo Rabenjafimanantsoa, Rabenjafimanantsoa Herimonja |
format |
Doctoral or Postdoctoral Thesis |
author |
Amaratunga, Polwattage Don Malitha Maduranga |
author_facet |
Amaratunga, Polwattage Don Malitha Maduranga |
author_sort |
Amaratunga, Polwattage Don Malitha Maduranga |
title |
Particle Settling in shear thinning non-Newtonian drilling fluids : Effect of oscillatory motion |
title_short |
Particle Settling in shear thinning non-Newtonian drilling fluids : Effect of oscillatory motion |
title_full |
Particle Settling in shear thinning non-Newtonian drilling fluids : Effect of oscillatory motion |
title_fullStr |
Particle Settling in shear thinning non-Newtonian drilling fluids : Effect of oscillatory motion |
title_full_unstemmed |
Particle Settling in shear thinning non-Newtonian drilling fluids : Effect of oscillatory motion |
title_sort |
particle settling in shear thinning non-newtonian drilling fluids : effect of oscillatory motion |
publisher |
Stavanger: Universitety of Stavanger |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2672879 |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
PhD thesis UiS;537 Paper 1: Maduranga Amaratunga, Milad Khatibi, Nikita Potokin and RuneW.Time, (2018), “Predicting rheological properties of water-basedpolymer mixtures from their component properties – PolyanionicCellulose and Xanthan gum”, Annual Transactions of the NordicRheology Society, vol. 26, pp 31 - 39 (Not in Brage) Paper 2: Maduranga Amaratunga, Rune W. Time, (2018), “Visualization ofacoustic streaming using PIV in Newtonian and non-Newtonianliquids”, International Journal of Computational Methods andExperimental Measurements, Volume 6, Issue 4, pp 814 – 826 (Not in Brage) Paper 3: Maduranga Amaratunga, Roar Nybø, Rune W. Time, (2018), “PIVanalysis of dynamic velocity profiles in non-Newtonian drillingfluids exposed to oscillatory motion”, Proceedings of the ASME2018 - 37th International Conference on Ocean, Offshore and ArcticEngineering. Volume 8: Polar and Arctic Sciences and Technology;Petroleum Technology, held on 17th – 22nd June 2018, Madrid, Spain (Not in Brage) Paper 4: Maduranga Amaratunga, H. A. Rabenjafimanantsoa, Rune W.Time, (2019), “CFD Analysis of low-frequency oscillations in Newtonian and non-Newtonian fluids in a vertical pipe”. WIT Transactions on Engineering Sciences, 125, pp 37-48. (Not in Brage) Paper 5: Maduranga Amaratunga, H. A. Rabenjafimanantsoa, Rune W.Time, (2019), “Comparison of oscillatory flow conditions in Newtonian and non-Newtonian fluids using PIV and high-speed image analysis”. Flow Measurement and Instrumentation, 70:101628. Paper 6: Maduranga Amaratunga, H. A. Rabenjafimanantsoa, Rune W.Time, (2020), “Estimation of shear rate change in vertically oscillating non-Newtonian fluids: Predictions on particle settling”, Journal of Non-Newtonian Fluid Mechanics 277: 104236 Paper 7: Maduranga Amaratunga, H. A. Rabenjafimanantsoa, Rune W.Time, (2020), “Influence of low-frequency oscillatory motion on particle settling in Newtonian and shear thinning non-Newtonian fluids”. The paper has been accepted (on 11th August 2020) by the Journal of Petroleum Science and Engineering and currently the article is in press for online publication. Particle Settling in shear thinning non-Newtonian drilling fluids : Effect of oscillatory motion by P. D. Malitha Maduranga Amaratunga. Stavanger : University of Stavanger, 2020 (PhD thesis UiS, no. 537) urn:isbn:978-82-7644-944-0 urn:issn:1890-1387 https://hdl.handle.net/11250/2672879 |
op_rights |
© 2020 Maduranga Amaratunga |
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ftunivstavanger:oai:uis.brage.unit.no:11250/2672879 2023-06-11T04:07:52+02:00 Particle Settling in shear thinning non-Newtonian drilling fluids : Effect of oscillatory motion Amaratunga, Polwattage Don Malitha Maduranga Time, Rune Wiggo Rabenjafimanantsoa, Rabenjafimanantsoa Herimonja 2020-09 application/pdf https://hdl.handle.net/11250/2672879 eng eng Stavanger: Universitety of Stavanger PhD thesis UiS;537 Paper 1: Maduranga Amaratunga, Milad Khatibi, Nikita Potokin and RuneW.Time, (2018), “Predicting rheological properties of water-basedpolymer mixtures from their component properties – PolyanionicCellulose and Xanthan gum”, Annual Transactions of the NordicRheology Society, vol. 26, pp 31 - 39 (Not in Brage) Paper 2: Maduranga Amaratunga, Rune W. Time, (2018), “Visualization ofacoustic streaming using PIV in Newtonian and non-Newtonianliquids”, International Journal of Computational Methods andExperimental Measurements, Volume 6, Issue 4, pp 814 – 826 (Not in Brage) Paper 3: Maduranga Amaratunga, Roar Nybø, Rune W. Time, (2018), “PIVanalysis of dynamic velocity profiles in non-Newtonian drillingfluids exposed to oscillatory motion”, Proceedings of the ASME2018 - 37th International Conference on Ocean, Offshore and ArcticEngineering. Volume 8: Polar and Arctic Sciences and Technology;Petroleum Technology, held on 17th – 22nd June 2018, Madrid, Spain (Not in Brage) Paper 4: Maduranga Amaratunga, H. A. Rabenjafimanantsoa, Rune W.Time, (2019), “CFD Analysis of low-frequency oscillations in Newtonian and non-Newtonian fluids in a vertical pipe”. WIT Transactions on Engineering Sciences, 125, pp 37-48. (Not in Brage) Paper 5: Maduranga Amaratunga, H. A. Rabenjafimanantsoa, Rune W.Time, (2019), “Comparison of oscillatory flow conditions in Newtonian and non-Newtonian fluids using PIV and high-speed image analysis”. Flow Measurement and Instrumentation, 70:101628. Paper 6: Maduranga Amaratunga, H. A. Rabenjafimanantsoa, Rune W.Time, (2020), “Estimation of shear rate change in vertically oscillating non-Newtonian fluids: Predictions on particle settling”, Journal of Non-Newtonian Fluid Mechanics 277: 104236 Paper 7: Maduranga Amaratunga, H. A. Rabenjafimanantsoa, Rune W.Time, (2020), “Influence of low-frequency oscillatory motion on particle settling in Newtonian and shear thinning non-Newtonian fluids”. The paper has been accepted (on 11th August 2020) by the Journal of Petroleum Science and Engineering and currently the article is in press for online publication. Particle Settling in shear thinning non-Newtonian drilling fluids : Effect of oscillatory motion by P. D. Malitha Maduranga Amaratunga. Stavanger : University of Stavanger, 2020 (PhD thesis UiS, no. 537) urn:isbn:978-82-7644-944-0 urn:issn:1890-1387 https://hdl.handle.net/11250/2672879 © 2020 Maduranga Amaratunga petroleumsteknologi petroleum engineering VDP::Teknologi: 500::Berg‑ og petroleumsfag: 510::Petroleumsteknologi: 512 Doctoral thesis 2020 ftunivstavanger 2023-05-29T16:02:01Z When drilling fluids circulate through the well and during the solids control operations, they are exposed to vibrations and oscillations of different frequencies and amplitudes. The secondary flow structures in oscillatory motion influence the liquid shear rate and rheological characterization of drilling fluids. Hence, oscillations understandably influence the cuttings carrying capacity of the drilling fluids and the solids separation efficiency as well. The majority of pipe flow investigations available in the scientific literature are related to the steady flow. However, more attention should be paid to unsteady flows, since there are many industrial and biological applications in the fields of applied fluid mechanics. As an example, even local geometrical variations and gas kicks in oil-well drilling operations might cause flow instabilities and fluctuations along the pipe trajectory. The problem of shear rate change in time-periodic flows of viscoelastic fluids is relevant in particular for the oil industry, as acknowledged by the research, and also for physiological flows such as blood flow in veins and arteries and the flow of mucus driven by cilia oscillations; hence the interest of the proposed research. This thesis presents a collection of six experimental studies and one numerical study which aims to investigate the effect of zero-mean oscillatory flow on particle settling in shear thinning polymeric non-Newtonian fluids of interest in drilling and maintenance of petroleum wells. In most of the cases, a mixture of water-based polymeric solutions of Polyanionic Cellulose (PAC) and Carboxymethyl Cellulose (CMC) has been employed as the test fluids and in some cases, an individual type of polymer solution has been employed with the viscosifier, Xanthan gum (Xg). The rheological properties of the slightly viscoelastic test fluids have always been characterized in all the sub-studies based on the specific experimental conditions and it is shown that the test fluidsexhibit a shear thinning viscosity in the ... Doctoral or Postdoctoral Thesis Arctic University of Stavanger: UiS Brage |