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Sensors 2016, 16(10), 1703; doi:10.3390/s16101703

Novel Downhole Electromagnetic Flowmeter for Oil-Water Two-Phase Flow in High-Water-Cut Oil-Producing Wells

1
Harbin Institute of Technology, School of Electrical Engineering and Automation, Harbin 150001, China
2
Daqing Oilfield Limited Company, Daqing 163412, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Andreas Hütten
Received: 3 April 2016 / Revised: 24 August 2016 / Accepted: 10 October 2016 / Published: 14 October 2016
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [3420 KB, uploaded 14 October 2016]   |  

Abstract

First, the measuring principle, the weight function, and the magnetic field of the novel downhole inserted electromagnetic flowmeter (EMF) are described. Second, the basic design of the EMF is described. Third, the dynamic experiments of two EMFs in oil-water two-phase flow are carried out. The experimental errors are analyzed in detail. The experimental results show that the maximum absolute value of the full-scale errors is better than 5%, the total flowrate is 5–60 m3/d, and the water-cut is higher than 60%. The maximum absolute value of the full-scale errors is better than 7%, the total flowrate is 2–60 m3/d, and the water-cut is higher than 70%. Finally, onsite experiments in high-water-cut oil-producing wells are conducted, and the possible reasons for the errors in the onsite experiments are analyzed. It is found that the EMF can provide an effective technology for measuring downhole oil-water two-phase flow. View Full-Text
Keywords: electromagnetic flowmeter; weight function; magnetic field; oil-water two-phase flow; flowrate measurement; oil-producing well; onsite experiments electromagnetic flowmeter; weight function; magnetic field; oil-water two-phase flow; flowrate measurement; oil-producing well; onsite experiments
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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. (CC BY 4.0).

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MDPI and ACS Style

Wang, Y.; Li, H.; Liu, X.; Zhang, Y.; Xie, R.; Huang, C.; Hu, J.; Deng, G. Novel Downhole Electromagnetic Flowmeter for Oil-Water Two-Phase Flow in High-Water-Cut Oil-Producing Wells. Sensors 2016, 16, 1703.

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