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Research Papers: Petroleum Engineering

A Model for Temperature Prediction for Two-Phase Oil/Water Stratified Flow

[+] Author and Article Information
Wei Shang

School of Science and Technology,
Cape Breton University,
1250 Grand Lake Road,
Sydney, NS, B1P 6L2, Canada

Cem Sarica

McDougall School of Petroleum Engineering,
University of Tulsa,
2450 East Marshall,
Tulsa, OK 74110

Contributed by the Petroleum Division of ASME for publication in the Journal of Energy Resources Technology. Manuscript received June 24, 2011; final manuscript received March 2, 2013; published online May 30, 2013. Assoc. Editor: Mansour Zenouzi.

J. Energy Resour. Technol 135(3), 032906 (May 30, 2013) (7 pages) Paper No: JERT-11-1065; doi: 10.1115/1.4023931 History: Received June 24, 2011; Revised March 02, 2013

In this paper a mathematical model was developed to predict temperature profiles for two-phase oil-water stratified flows. Based on the energy balance of a control volume, analytical solutions were derived for the prediction of temperature profiles for two-phase oil/water stratified flow pattern in pipe flows. The model has been verified with a single-phase heat transfer model, which is available in most heat transfer textbooks. Two typical cases were simulated for extreme operating conditions with water cuts of 0% and 100%, respectively. This analytical model was also validated against experimental data. The test was conducted on a multiphase facility with accurate flow control devices and effective thermal treating units. The water cut was set at 50% for this test. The simulation results and experimental data agree within the experimental uncertainty. The closure relationships can be conveniently applied to a two-phase oil/water paraffin deposition model, which is dependent on the heat transfer process. The model was also used to predict the temperature profiles for two-phase oil and water flows with different water cuts.

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Figures

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Fig. 1

Schematic illustration of oil/water stratified flow in a pipe

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Fig. 3

Multiphase test facility

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Fig. 4

Schematic illustration of the test section for two-phase oil/water flow

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Fig. 5

Comparison of the predicted temperatures and measured data for two-phase oil and water stratified flow

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Fig. 2

Schematic illustration of a control volume for oil/water flow

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Fig. 6

Cross sectional view of wax deposition: (a) photo taken from test section and (b) schematic illustration of wax deposit around pipe

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Fig. 7

Nondimensional temperature profiles for oil and water flow with different water cuts: (a) 0%, (b) 20%, (c) 50%, (d) 80%, (e) 85%, and (f) 100%

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