Flow regime determination and flow measurement in multiphase flo

Details Flow regime determination and flow measurement in multiphase flo Flow regime determination and flow measurement in multiphase flo

1997-01-17

1998-01-13

Chilcot, Richard

Measuring and testing

Volume or rate of flow

Of selected fluid mixture component

7386142, G01F 174

Patent

active

057082111

ABSTRACT:
A predetermined multiphase flow anomaly, for example, a plug, a slug, or a pseudo-slug, in a pipeline may be identified by identifying an analysis pipe section containing a multiphase fluid flow, measuring a first differential pressure at a first pair of pressure measuring points positioned along the analysis pipe section, measuring a second differential pressure at a second pair of pressure measuring points positioned along the analysis pipe section, identifying a primary drop in the first differential pressure and a secondary drop in the second differential pressure, measuring a time delay between initiation of the primary pressure drop and initiation of the secondary pressure drop, and determining as a function of the time delay whether the primary pressure drop corresponds to a predetermined multiphase flow anomaly moving through the pipe analysis section.

REFERENCES:
patent: 4231262 (1980-11-01), Boll et al.
patent: 4391149 (1983-07-01), Herzl
patent: 4574643 (1986-03-01), Scott et al.
patent: 4576043 (1986-03-01), Nguyen
patent: 5591922 (1997-01-01), Sergeral
Robert Wilkens and W. Paul Jepson, "Studies of Multiphase Flow in High Pressure Horizontal and +5 Degree Inclined Pipelines", from Proceedings of the Sixth (1996) International Offshore and Polar Engineering Conference (1996), Los Angeles, CA, May 26-31, 1996, ISBN 1-880653-22-2 (Set); ISBN 1-880653-24-9 (vol. II), pp. 139 through 146.

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