alexa Characterization Of Oil-water Two-phase Flow Based On Terahertz Time-domain Spectroscopy | 68861
ISSN:2157-7463

Journal of Petroleum & Environmental Biotechnology
Open Access

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3rd International Conference and Expo on Oil and Gas

Yan Song and Hong L Zhan
China University of Petroleum, China
ScientificTracks Abstracts: J Pet Environ Biotechnol
DOI: 10.4172/2157-7463-C1-034
Abstract
Understanding the dynamics behaviors of oil-water two-phase flow is crucial to important problems in the oil wells and pipelines. Because of the extremely high sensitivity of terahertz wave to hydrogen bonding, a new method to study oil-water two-phase flow is put forward using the terahertz time-domain spectroscopy (THz-TDS). By comparing the amplitudes of the maximum peak in THz-TDS, the ability of THz-TDS has been shown previously to discriminate the flow pattern for oil-water two-phase flow with low water content in rectangular pipe. For further study on oil-water two-phase flow, we conduct another experiment using diesel and tap water. The amplitude of THz-TDS of oil-water two-phase flow is corresponding to the flow pattern, the flow pattern and the critical flow rate can be distinguished by THz-TDS. When the oil-water mixture flow rates are high, the water phase is intensively impacted by the oil phase and W/O flow is found and the water content in the test part almost keeps unchanged in this situation resulting in the unchanged THz signal in the measurement. As the decrease of mixture flow rate, the droplets are mainly affected by gravity and the force associated with the motion reduces. For further decrease in the mixture flow velocities, the number of droplets reduces and the maximum drop size increases, the flow is gravity dominated and then the O and DW/O flow pattern is formed. In order to investigate the effect of the input mixture flow rate on the slip, simulations have been performed under selected mixture flow rates for the twophase flows with different input water fractions. The results reveal that the slip is mainly dominated by the mixing flow rate at low flow rates, whereas the effect decreases gradually with increasing flow rate.
Biography

Yan Song has her expertise in the evaluation and characterization of fluid (microfluidic) flow in the oil and gas field based on new optical method. Her research of oil-water two-phase flow based on terahertz time-domain spectroscopy makes supplement of flow pattern analysis in the oil and gas field.

Email: [email protected]

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