Relevant bibliographies by topics / Eccentric annulus

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Eccentric annulus'

Author: Grafiati
Published: 4 June 2021
Last updated: 2 February 2022

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Journal articles on the topic "Eccentric annulus"

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Haciislamoglu, M., and J. Langlinais. "Non-Newtonian Flow in Eccentric Annuli." Journal of Energy Resources Technology 112, no. 3 (1990): 163–69. http://dx.doi.org/10.1115/1.2905753.

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A common assumption for annular flow used in the petroleum industry is that the inner pipe is concentrically located inside the flow geometry; however, this is rarely the case, even in slightly deviated wells. Considering the increasing number of directional and horizontal wells, the flow behavior of drilling fluids and cement slurries in eccentric annuli is becoming particularly important. In this paper, the governing equation of laminar flow is numerically solved using a finite differences technique to obtain velocity and viscosity profiles of yield-power law fluids (including Bingham plasti
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Zhang, H., G. Li, S. Tian, Zh Li, and M. Wang. "Numerical simulation of velocity profile in eccentric annulus." "Proceedings" of "OilGasScientificResearchProjects" Institute, SOCAR, no. 3 (September 30, 2014): 13–21. http://dx.doi.org/10.5510/ogp20140300205.

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Haci, M., and U. Cartalos. "Fluid Flow in a Skewed Annulus." Journal of Energy Resources Technology 118, no. 2 (1996): 89–97. http://dx.doi.org/10.1115/1.2792710.

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A novel, realistic treatment of annular flow in an oil well is developed. The fluid flow in an annuuls with an inclined or S-shaped inner pipe is considered. The model covers laminar and turbulent flow regimes and the results are experimentally verified. The study predicts axial and angular velocities and frictional pressure losses. The frictional pressure losses are shown to be higher than in the corresponding concentric annulus when the inner pipe is severely S-shaped. However, for typical drilling well geometries, the frictional pressure losses are found to approach the eccentric annular pr
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Azouz, Idir, Siamack A. Shirazi, Ali Pilehvari, and J. J. Azar. "Numerical Simulation of Laminar Flow of Yield-Power-Law Fluids in Conduits of Arbitrary Cross-Section." Journal of Fluids Engineering 115, no. 4 (1993): 710–16. http://dx.doi.org/10.1115/1.2910203.

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A numerical model has been developed to simulate laminar flow of Power-law and Yield-Power law fluids in conduits of arbitrary cross-section. The model is based on general, nonorthogonal, boundary-fitted, curvilinear coordinates, and represents a new approach to the solution of annular flow problems. The use of an effective viscosity in the governing equation of the flow allows the study of the flow behavior of any fluid for which the shear stress is a function of shear rate only. The model has been developed primarily to simulate annular flow of fluids used in drilling and completion operatio
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El-Shaarawi, M. A. I., and E. M. A. Mokheimer. "Developing Free Convection in Open-Ended Vertical Eccentric Annuli With Isothermal Boundaries." Journal of Heat Transfer 121, no. 1 (1999): 63–72. http://dx.doi.org/10.1115/1.2825967.

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A model has been developed to numerically study the developing laminar free convection in vertical open-ended eccentric annuli with isothermal boundary conditions. For a fluid of Prandtl number 0.7 in an annulus of radius ratio 0.5, the developing velocity profiles in addition to the development of the pressure along the annulus are presented. The channel heights required to naturally induce different flow rates have also been obtained for three values of the dimensionless eccentricity, namely, 0.1, 0.5, and 0.7. Variations of the total heat absorbed by the fluid with the channel height are pr
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Zhang, Yuwen, and A. Faghri. "Analysis of Freezing in an Eccentric Annulus." Journal of Solar Energy Engineering 119, no. 3 (1997): 237–41. http://dx.doi.org/10.1115/1.2888025.

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Freezing in an eccentric annulus is investigated numerically by using a temperature transforming model. Since the effect of the heat conduction along the circular direction on the growth of the freezing layer is very small, an analytical solution by employing integral approximate method is proposed. The freezing rate obtained by the analytical solution agreed very well with that of the numerical solution, although the analytical solution is much simpler than the numerical solution. The effects of the eccentric annulus geometric structure on the freezing process is also investigated.
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Liu, Bao Jun, Cai Xia Fan, and Hong Du. "Causes Analysis of Eccentric Wear of Sucker Rod in Produced Fluid with Polymer." Advanced Materials Research 594-597 (November 2012): 2744–47. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.2744.

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After polymer flooding was put into effect in DaQing oilfield, eccentric wear of sucker rod and tubing has been so serious that it made the rods break. This is because production liquid produced from normal wells is pure viscous fluid while liquid produced from polymer flooding oil wells is viscoelastic fluid. The flow equation of viscoelastic fluid in eccentric annulus was established in cylinder coordinate system, and the velocity distribution was solved. Based on upper-convected Maxwell constitutive equation, the normal stress calculating model of viscoelastic fluid acting on sucker rods wa
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Jawad, Riayde Hussein. "Flow of cement slurry through an eccentric annulus." Journal of Petroleum Research and Studies 10, no. 1 (2020): 18–35. http://dx.doi.org/10.52716/jprs.v10i1.296.

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A step by step procedure has been developed to design cement hydraulic during cement jobto minimize non cemented channels or bad cement job by taking into consideration thenon-flow area throughout the eccentric annulus. Since cement slurry exhibit non-Newtonian rheological behavior, a good description of the slurry rheology is required inorder to estimate accurately the velocity profile across the annulus. To achieve this goal,six rheological models have been adopted: Power-law, Robertson-Stiff, Bingham, Casson,Modified Power-law, and Modified Robertson-Stiff Models. Using the last five rheolo
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Ingham, D. B., and N. Patel. "DEVELOPING COMBINED CONVECTION IN AN ECCENTRIC ANNULUS." Numerical Heat Transfer, Part A: Applications 29, no. 7 (1996): 707–24. http://dx.doi.org/10.1080/10407789608913815.

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Mekheimer, Kh S., Y. Abd elmaboud, and A. I. Abdellateef. "Peristaltic Transport through Eccentric Cylinders: Mathematical Model." Applied Bionics and Biomechanics 10, no. 1 (2013): 19–27. http://dx.doi.org/10.1155/2013/902097.

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This paper discusses the effect of peristaltic transport on the fluid flow in the gap between two eccentric tubes (eccentric-annulus flows). The inner tube is uniform, rigid, while the outer tube has a sinusoidal wave traveling down its wall. The flow analysis has been developed for low Reynolds number and long wave length approximation. The velocity and the pressure gradient have been obtained in terms of the dimensionless flow rateQ¯, timet, azimuthal coordinate θ and eccentricity parameter ϵ (the parameter that controls of the eccentricity of the inner tube position). The results show that
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Dissertations / Theses on the topic "Eccentric annulus"

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Seyidoglu, Tijen. "Generalized Couette Flow Of A Herschel-bulkley Fluid Through Eccentric Annulus-an Approximate Solution." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/2/12607087/index.pdf.

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ABSTRACT GENERALIZED COUETTE FLOW OF A HERSCHEL - BULKLEY FLUID THROUGH ECCENTRIC ANNULUS - AN APPROXIMATE SOLUTION Seyidoglu, Tijen M.S., Department of Chemical Engineering Supervisor: ismail Tosun Co-Supervisor: Ahmet N. Eraslan January 2006, 134 pages Generalized Couette flow of a Herschel-Bulkley fluid in an eccentric annulus is analyzed by approximating the flow geometry as a slit of variable height. Besides an imposed pressure gradient, one of the plates is considered non-stationary to take into account the axial and/or angular motion of the inner pipe in an eccentric annulus sys
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Omurlu, Cigdem. "Mathematical Modeling Of Horizontal Two-phase Flow Through Fully Eccentric Annuli." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607243/index.pdf.

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iv The primary objective of this study is to understand the mechanism, the hydraulics and the characteristics, of the two-phase flow in horizontal annuli. While achieving this goal, both theoretical and experimental works have been conducted extensively. The METU-PETE-CTMFL (Middle East Technical University, Petroleum and Natural Gas Engineering Department, Cuttings Transport and Multiphase Flow Laboratory) multiphase flow loop consists of 4.84 m long eccentric horizontal acrylic pipes having 0.1143m inner diameter (I.D) acrylic casing - 0.0571m outer diameter (O.D) drillpipe and 0.0932m I.D a
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Sim, Wood-Gun. "Study of unsteady annular flows between eccentric cylinders." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=70345.

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A new numerical method has been developed to evaluate the fluid-dynamic forces acting on a cylinder immersed in flowing or quiescent fluid for eccentric configurations, in connection with the flow-induced-vibration problem. The fluid-dynamic forces, generated by translational motion in quiescent fluid or by a flexural motion in axial(laminar) flow, have been formulated based on a spectral collocation method. This numerical method is capable of taking fully into account unsteady viscous effects and of predicting viscous forces rigorously rather than approximately, in contrast with existing theo
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DUTRA, EDUARDO STEIN SOARES. "DISPLACEMENT OF NON-NEWTONIAN LIQUIDS IN ECCENTRIC ANNULI." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=6947@1.

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PETRÓLEO BRASILEIRO S. A.<br>Após a perfuração de poços de petróleo, a lama utilizada na remoção de cascalho, lubrificação e resfriamento da broca deve ser removida e substituída por uma mistura de cimento. Essa substituição se dá pelo deslocamento de um fluido por outro no espaço anular entre a formação rochosa e a coluna de completação ou revestimento. A mistura de cimento tem a função de garantir a estabilidade estrutural do poço evitando danos ambientais e prejuízos econômicos. Para melhores resultados do processo de cimentação, utilizam-se fluidos intermediários, também chamados de
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Wang, Hengliang. "Numerical study of turbulent flow in eccentric annular pipe." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/6349.

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An eccentric annular duct is a prototype element in many applications, for example in close-packed tubular heat exchangers and coolant channels of nuclear reactors. From a fundamental viewpoint, turbulent flow in eccentric annular ducts is an ideal model for investigating inhomogeneous turbulence. It is also a convenient model to study the laminar and turbulent interface and may serve as a test case for turbulence modelling of flows with partly turbulent regimes. Based on the approach of direct numerical simulation, numerical investigations of turbulent flow in eccentric annular pipes are carr
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Suryanarayanan, Arun. "Experimental measurement and analysis of wall pressure distribution for a 50% eccentric whirling annular seal." Texas A&M University, 2003. http://hdl.handle.net/1969.1/1205.

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In any rotating machinery, the geometry of the seal influences the extent of systemleakage. The path taken by the flow in the clearance volume is dependent on the seal and rotor profile. The clearance between a new "seal-rotor" combination is uniform except for small variations during manufacturing and assembly. With time this annular cross section undergoes further physical changes causing non-uniform flow in the annular volume. This azimuthally varying leakage through the seal-rotor annulus creates unbalanced forces on the rotor causing it to whirl. It is essential to identify the reasons fo
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Cusano, Domenic. "Experimental measurement of phase averaged wall-pressure distributions for a 25% eccentric whirling annular seal." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/3955.

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Instantaneous wall-pressure data were recorded for a 25% eccentric whirling annular seal for rotor speeds of 1800RPM and 3600RPM, axial Reynolds numbers of 24000 and 12000, and whirl ratios of 0.1-1.0 following the procedure set forth by Winslow (1994), Robic (1999) and Suryanarayanan (2003). Overall, the phase averaged wall-pressure distributions were consistent with previous results. The “switch” in the pressure distribution measured by Suryanarayanan (2003) and Robic (1999) from pressure to suction between the seal entrance and exit occurs at and above a whirl ratio of 0.7 for 1800RPM and
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GOMES, FREDERICO CARVALHO. "ASYMPTOTIC MODEL FOR DISPLACEMENT OF LIQUIDS IN ANNULAR WITH VARIABLE ECCENTRIC." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2009. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=14546@1.

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FUNDAÇÃO DE APOIO À PESQUISA DO ESTADO DO RIO DE JANEIRO<br>Uma das etapas do processo de perfuração de um poço de petróleo é a cimenta ção, ela prove o isolamento das zonas e a sustentação do revestimento. Durante o processo de cimentação é necessário a substituição da lama de perfuração pela pasta de cimento. Para evitar a mistura entre esses fluidos é normalmente utilizado um fluido espaçador. Dessa forma é comum que sejam bombeados 3 ou mais fluidos através do anular excêntrico formado pela parede da rocha e o revestimento. A análise completa do escoamento no espaço anular que ocorre duran
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ALMEIDA, INAE RODRIGUES DE. "NON NEWTONIAN FLOW IN ECCENTRIC ANNULAR SPACE WITH ROTATING INNER CYLINDER." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=22824@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>O presente trabalho apresenta um modelo simplificado baseado na teoria de lubrificação e conceito de viscosidade equivalente para estudar o escoamento dos fluidos de perfuração através de um espaço anular excêntrico com rotação da coluna de perfuração. Em razão do comportamento não Newtoniano destes fluidos, é significativa a influência da rotação da coluna na perda de carga, já que a viscosidade dos fluidos varia com a taxa de deformação imposta. Uma completa análise deste problema requer uma solução tridimensional da equação de conservaçã
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PILLUTLA, JAYANTHI. "LAMINAR NON-NEWTONIAN FLOWS IN ECCENTRIC ANNULI WITH INNER CYLINDER ROTATION." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin998070950.

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Book chapters on the topic "Eccentric annulus"

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Nikitin, N. V., S. I. Chernyshenko, and H. L. Wang. "Turbulent flow and heat transfer in eccentric annulus." In Springer Proceedings in Physics. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03085-7_144.

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Escudier, M. P., and I. W. Gouldson. "Effects of Centrebody Rotation on Laminar Flow Through an Eccentric Annulus." In Developments in Laser Techniques and Fluid Mechanics. Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60911-4_19.

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Horimek, A., and N. Ait Messaoudene. "Laminar Flow for a Newtonian Thermodependent Fluid in an Eccentric Horizontal Annulus." In CFD Techniques and Energy Applications. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-70950-5_7.

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Brito, Adriana, Nelson MacQuhae, Francisco García, Nelson Fernández, and José Colmenares. "Mechanistic Model for Eccentric Annular Gas-Liquid Flow in Horizontal Pipelines." In Computational and Experimental Fluid Mechanics with Applications to Physics, Engineering and the Environment. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-00191-3_29.

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Narwariya, Manoj, Premanand Singh Chauhan, Avadesh Kumar Sharma, and Yogendra Singh Yadav. "Dynamic Analysis of Isotropic Annular Plate with Eccentric Hole Using Finite Element Method." In Lecture Notes in Mechanical Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8704-7_89.

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Hao, Xiaohong, Xinming Yang, and Cheng Peng. "Flow and Heat Transfer Between Rotating Sphere and Eccentric Coaxial Spherical Annuli Heat Sink." In Lecture Notes in Electrical Engineering. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9441-7_64.

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Umadevi, B., P. A. Dinesh, and C. V. Vinay. "The Analytical Study of Velocity Slip on Two-Phase Flow in an Eccentric Annular Region." In Advances in Applied Mechanical Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1201-8_26.

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Chin, Wilson C. "Eccentric, Nonrotating, Annular Flow." In Computational Rheology for Pipeline and Annular Flow. Elsevier, 2001. http://dx.doi.org/10.1016/b978-088415320-7/50002-6.

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Szabo, Peter, and Ole Hassager. "Flow of viscoplastic fluids in eccentric annular geometries." In Theoretical and Applied Rheology. Elsevier, 1992. http://dx.doi.org/10.1016/b978-0-444-89007-8.50078-2.

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Chin, Wilson C. "Steady, Two-Dimensional, Non-Newtonian, Single-Phase, Eccentric Annular Flow." In Managed Pressure Drilling. Elsevier, 2012. http://dx.doi.org/10.1016/b978-0-12-385124-6.00004-6.

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Conference papers on the topic "Eccentric annulus"

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Patel, N., and Derek B. Ingham. "STEADY MIXED CONVECTION IN AN ECCENTRIC ANNULUS." In International Heat Transfer Conference 10. Begellhouse, 1994. http://dx.doi.org/10.1615/ihtc10.3380.

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Ogugbue, Chinenye C., and Subhash N. Shah. "Friction Pressure Correlations for Oilfield Polymeric Solutions in Eccentric Annulus." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-80044.

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Polymer fluids are utilized extensively in the petroleum industry for viscosity enhancement and friction pressure reduction during turbulent flow. Selection of the appropriate correlation for the desired fluid and flow regime is very important for the accurate determination of frictional pressure losses. A range of correlations has been published for predicting frictional losses under annular flow conditions. All these correlations are based on certain assumptions, which limit their application under different operating conditions. This paper presents the results of an experimental study carri
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Ravi, Krishna, and Terry Hemphill. "Pipe Rotation and Hole Cleaning in Eccentric Annulus." In IADC/SPE Drilling Conference. Society of Petroleum Engineers, 2006. http://dx.doi.org/10.2118/99150-ms.

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Mahfouz, F. M., R. M. Rizk-allah, Haroon Imtiaz, and Bin Liu. "BUOYANCY DRIVEN FLOW WITHIN UNIFORMLY HEATED ECCENTRIC ANNULUS." In International Heat Transfer Conference 16. Begellhouse, 2018. http://dx.doi.org/10.1615/ihtc16.cov.021477.

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Yang, Xingbo, Guanghui Su, Wenxi Tian, Jiayun Wang, and Suizheng Qiu. "Numerical Study on Flow and Heat Transfer in Concentric and Eccentric Annuli." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29341.

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The narrow annular channel has been widely studied for its relatively larger heat transfer surface and structural compatibility. In this study, numerical studies have been performed on the 3D forced flow and heat transfer of water in concentric and eccentric annuli by using CFX codes. The gaps of concentric annuli range from 1.0mm to 4.0mm with the interval of 0.5mm. The eccentricity ratioes in eccentric annuli are 0.2, 0.3, 0.5 and 0.7. The radius ratioes of the eccentric annulus include 0.33, 0.5 and 0.66. The calculated results are compared with some experimental data and they agree well. T
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Sorgun, Mehmet, Jerome J. Schubert, Ismail Aydin, and M. Evren Ozbayoglu. "Modeling of Newtonian Fluids in Annular Geometries With Inner Pipe Rotation." In ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-31176.

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Flow in annular geometries, i.e., flow through the gap between two cylindrical pipes, occurs in many different engineering professions, such as petroleum engineering, chemical engineering, mechanical engineering, food engineering, etc. Analysis of the flow characteristics through annular geometries is more challenging when compared with circular pipes, not only due to the uneven stress distribution on the walls but also due to secondary flows and tangential velocity components, especially when the inner pipe is rotated. In this paper, a mathematical model for predicting flow characteristics of
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Mahfouz, F. M., and H. Imtiaz. "Free convection within an eccentric annulus filled with Micropolar fluid." In 2012 International Bhurban Conference on Applied Sciences and Technology (IBCAST). IEEE, 2012. http://dx.doi.org/10.1109/ibcast.2012.6177570.

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Ytrehus, Jan David, Bjørnar Lund, Ali Taghipour, Shreyansh Divyankar, and Arild Saasen. "Experimental Investigation of Wellbore Fluid Displacement in Concentric and Eccentric Annulus." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-62028.

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One of the most critical operations during well construction is the cementing procedure. Due to the curing nature of the cement slurry there will be only one opportunity to cement the well properly. Although one for top hole cases can fill cement in from the top in a remedial operation, this possibility cannot fully compensate for a non-optimal initial cement job. Furthermore, it cannot be applied to other well sections. In those sections, complex squeeze cementing operations may be necessary. Consequences of improper annular cement can be leakage during production phase and extensive costs wh
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Huque, Mohammad Mojammel, Syed Imtiaz, Stephen Butt, Sohrab Zendehboudi, and Mohammad Azizur Rahman. "Experimental Study of Drill Cuttings Transport in Horizontal Well With Newtonian Fluid." In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-18751.

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Abstract Transport of cuttings is crucial in a horizontal drilling operation. Effective removal of cuttings is necessary for efficient drilling. An experimental investigation has been carried out to analyze the flow behaviour of solid cuttings in different drilling environments with visualization techniques. This study investigates the cuttings transport mechanism in a horizontal annulus section. A 6.16 m long and 4.5″ × 2.5″ annulus section was used to model the real-time drilling behaviour with different flow rates, drill pipe rotations and eccentric positions. Water as a Newtonian fluid was
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Chakravarthy, S. S., W. Tian, D. Gynther, and W. K. S. Chiu. "OVERALL RADIATIVE ABSORPTION OF AN ECCENTRIC CYLINDRICAL ANNULUS WITH FRESNEL SURFACES." In Annals of the Assembly for International Heat Transfer Conference 13. Begell House Inc., 2006. http://dx.doi.org/10.1615/ihtc13.p11.120.

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