Unified Model of Heat Transfer in Gas/Liquid Pipe Flow

Zhang, Hongquan; Wang, Qian; Sarica, Cem; Brill, J.P.

doi:10.2118/90459-pa

Cited by 15 publications

(11 citation statements)

References 12 publications

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“…No single correlation was found capable of predicting all flow conditions. Zhang et al [10] presented an analytical model for heat transfer in gas-liquid two phase flow based on energy balance equations and analysis of the temperature differences in the liquid film, gas core and slug body. The analytical calculations were validated by experiments of Manabe [11].…”

Section: Introductionmentioning

confidence: 99%

Local instantaneous heat transfer around a rising single Taylor bubble

Babin

Shemer

Barnea

2015

International Journal of Heat and Mass Transfer

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Section: Introductionmentioning

confidence: 99%

Local instantaneous heat transfer around a rising single Taylor bubble

Babin

Shemer

Barnea

2015

International Journal of Heat and Mass Transfer

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“…A sufficiently significant factor for heat exchange processes is the specific heat capacities of the liquid and mechanical particles. With an increase in the concentration of mechanical impurities, the heat capacity of the mixture becomes lower than that of water, since the heat capacity of feldspar particles is about 5 times less than the heat capacity of water [5,6].…”

Section: Main Bodymentioning

confidence: 99%

“…To calculate the viscosity and thermal conductivity coefficient Kofanov (1964) and Smith (1982) [5] recommend the following ratio: μm = μl(1+2,5φ + 7,17φ² + 16,2φ³ ),…”

Section: Main Bodymentioning

confidence: 99%

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Investigation of Heat Exchange Processes in the Oil Well

Bulchayev¹,

Халадов²,

Gairabekov³

et al. 2019

Proceedings of the International Symposium "Engineering and Earth Sciences: Applied and Fundamental Research" Dedicated to the

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In the practice of pumping oil wells, thermo-boric conditions occurring inside the well are important. The neglect(or omission) of heat exchange processes occurring in the well may lead to a decrease in the performance of pumping equipment, reduced turnaround time and accidental failures of downhole equipment. In this paper, on the basis of the obtained theoretical and experimental conclusions made by well-known experts in the field of hydromechanics and thermodynamics, the issues of heat exchange processes occurring inside an operating well are considered. The heat transfer for a mixture of water-feldspar particles with a turbulent mode of motion in the annular space is investigated. The combined effect of the particle size on the heat transfer coefficient, the hydraulic diameter of the annular space, the ratio of the hydraulic diameter to the average particle diameter, the concentration of particles in the mixture, the Prandtl and Reynolds numbers is experimentally shown. It has been established that omission of the influence of a mechanical impurity in determining the heat exchange coefficient may lead to its understating more than 2 times, and the temperature of the electric motorby 10 °C. The selection of the technological parameters of the operation of the ESP in such a way that the value of dp falls within the interval from 2 to 6 will help improve heat exchange and protect the electro motor from overheating.

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“…Zhang et al ( 2006 ) developed a unified model of multiphase heat transfer for different flow patterns of gas–liquid pipe flow at all inclinations – 90° to + 90° from the horizontal. The required local flow parameters were predicted by use of the unified hydrodynamic model for gas/liquid pipe flow developed by Zhang et al ( 2003a , b ).…”

Section: Introductionmentioning

confidence: 99%

A mechanistic model of heat transfer for gas–liquid flow in vertical wellbore annuli

Yin

Liu

2017

Pet. Sci.

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The most prominent aspect of multiphase flow is the variation in the physical distribution of the phases in the flow conduit known as the flow pattern. Several different flow patterns can exist under different flow conditions which have significant effects on liquid holdup, pressure gradient and heat transfer. Gas–liquid two-phase flow in an annulus can be found in a variety of practical situations. In high rate oil and gas production, it may be beneficial to flow fluids vertically through the annulus configuration between well tubing and casing. The flow patterns in annuli are different from pipe flow. There are both casing and tubing liquid films in slug flow and annular flow in the annulus. Multiphase heat transfer depends on the hydrodynamic behavior of the flow. There are very limited research results that can be found in the open literature for multiphase heat transfer in wellbore annuli. A mechanistic model of multiphase heat transfer is developed for different flow patterns of upward gas–liquid flow in vertical annuli. The required local flow parameters are predicted by use of the hydraulic model of steady-state multiphase flow in wellbore annuli recently developed by Yin et al. The modified heat-transfer model for single gas or liquid flow is verified by comparison with Manabe’s experimental results. For different flow patterns, it is compared with modified unified Zhang et al. model based on representative diameters.

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Unified Model of Heat Transfer in Gas/Liquid Pipe Flow

Cited by 15 publications

References 12 publications

Local instantaneous heat transfer around a rising single Taylor bubble

Local instantaneous heat transfer around a rising single Taylor bubble

Investigation of Heat Exchange Processes in the Oil Well

A mechanistic model of heat transfer for gas–liquid flow in vertical wellbore annuli

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