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07170 Effect of Oil Type on Phase Wetting Transition and Corrosion in Oil-Water Flow

Picture for 07170 Effect of Oil Type on Phase Wetting Transition and Corrosion in Oil-Water Flow
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Product Number: 51300-07170-SG
ISBN: 07170 2007 CP
Author: X. Tang, F. Ayello, C. Li, S. Nesic, J. Cai, C. Ivan, T. Cruz, and J. N. Al-Khamis
Publication Date: 2007
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This paper describes an experimental study of water wetting in large diameter horizontal oil-water two-phase flows. Four types of oil, one model oil and three crude oils, have been used in conjunction with a 1 wt% NaCl brine as working fluids. Flow pattern visualization, wall conductance probes, corrosion monitoring and wall fluid sampling were successfully applied in this investigation. Based on the overlapping information from these four techniques, three types of phase wetting regimes (stable water wetting, intermittent wetting and stable oil wetting) were observed. Comprehensive phase wetting maps were constructed where and the boundaries between these water wetting regimes are identified. It was found that the oil type has a significant effect on the transition from stable oil wetting to intermittent wetting and that much of the influence can be ascribed to the physical properties of the oil: density, viscosity and surface/interfacial tension. No corrosion was detected in the stable oil wetting regime, while the corrosion rate in the full water wetting regime was typically twice that observed for the intermittent wetting.
This paper describes an experimental study of water wetting in large diameter horizontal oil-water two-phase flows. Four types of oil, one model oil and three crude oils, have been used in conjunction with a 1 wt% NaCl brine as working fluids. Flow pattern visualization, wall conductance probes, corrosion monitoring and wall fluid sampling were successfully applied in this investigation. Based on the overlapping information from these four techniques, three types of phase wetting regimes (stable water wetting, intermittent wetting and stable oil wetting) were observed. Comprehensive phase wetting maps were constructed where and the boundaries between these water wetting regimes are identified. It was found that the oil type has a significant effect on the transition from stable oil wetting to intermittent wetting and that much of the influence can be ascribed to the physical properties of the oil: density, viscosity and surface/interfacial tension. No corrosion was detected in the stable oil wetting regime, while the corrosion rate in the full water wetting regime was typically twice that observed for the intermittent wetting.
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