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Mathematical Problems in Engineering - Volume 2014 2014, Article ID 705323, 13 pages -

Research Article

School of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, China

Logging and Testing Services Company, Daqing Oilfield Limited Company, Daqing 163453, China

Daqing Oilfield Limited Company, Daqing 163412, China

Received 17 January 2014; Revised 30 March 2014; Accepted 8 April 2014; Published 29 April 2014

Academic Editor: Huaiqin Wu

Copyright © 2014 Yingwei Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Flow velocity measurement was an important research of oil-gas-water three-phase flow parameter measurements. In order to satisfy the increasing demands for flow detection technology, the paper presented a gas-liquid phase flow velocity measurement method which was based on energy demodulation algorithm combing with time delay estimation technology. First, a gas-liquid phase separation method of oil-gas-water three-phase flow based on energy demodulation algorithm and blind signal separation technology was proposed. The separation of oil-gas-water three-phase signals which were sampled by conductance sensor performed well, so the gas-phase signal and the liquid-phase signal were obtained. Second, we used the time delay estimation technology to get the delay time of gas-phase signals and liquid-phase signals, respectively, and the gas-phase velocity and the liquid-phase velocity were derived. At last, the experiment was performed at oil-gas-water three-phase flow loop, and the results indicated that the measurement errors met the need of velocity measurement. So it provided a feasible method for gas-liquid phase velocity measurement of the oil-gas-water three-phase flow.

Autor: Yingwei Li, Jing Gao, Xingbin Liu, and Ronghua Xie



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