Method for monitoring three phrase fluid flow in tubulars

Details Method for monitoring three phrase fluid flow in tubulars Method for monitoring three phrase fluid flow in tubulars

1997-05-19

1999-07-27

Dombroske, George M.

Measuring and testing

Volume or rate of flow

Of selected fluid mixture component

G01F 174

Patent

active

059293420

ABSTRACT:
Multi-phase fluid flow in a pipeline or other flowline is monitored using a combination of flow type detectors. One set of detectors monitors the interfaces between fluid interfaces and the other monitors the presence of different fluid phases around the periphery of the flowline. The relative volumetric fluid flow rates can be measured by detecting changes in the phase interfaces between two sets of sensor rings using sensors spaced around the flowline with the fluid flow type being detected across the flowline with an annular capacitance detector. The sensor rings typically use ultrasonic transducers for detecting the phase interfaces while the capacitance device indicates the presence (or absence) of different phases around the periphery of the flowline. By combining the outputs of the different detectors, an indication of the flow phenomena in the flowline can be obtained. The flowrate in the line can be measured directly using a concentrically oriented set of hot wire anemometers or a concentrically oriented set of thermopiles spaced equally around the flowline in conjunction with the annular capacitance device.

REFERENCES:
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patent: 4751842 (1988-06-01), Ekrann et al.
patent: 5001936 (1991-03-01), Baumoel
patent: 5035147 (1991-07-01), Woodward
patent: 5226319 (1993-07-01), Sizuki
patent: 5228347 (1993-07-01), Lowell et al.
patent: 5551287 (1996-09-01), Maute et al.

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