An experiment was performed to study air∕water slug frequency in a horizontal clear pipe by means of visual inspection and differential pressure measurement in the range of 01s. Results showed that a simplified model for slug pressure drop allowed the differential pressure data to compare favorably with visual observations for slug frequency. It was concluded that this technique gives a proper estimation of slug frequency, given only basic flow information. It is recommended that this technique be used when constrained to differential pressure or used to analyze existing differential pressure data.

1.
Andreussi
,
P.
,
Bendiksen
,
K. H.
, and
Nydal
,
O. J.
, 1993, “
Void Distribution in Slug Flow
,”
Int. J. Multiphase Flow
0301-9322,
19
, pp.
817
828
.
2.
Wilkens
,
R.
, and
Jepson
,
W. P.
, 1996, “
Studies of Multiphase Flow in High Pressure Horizontal and +5 Degree Inclined Pipelines
,”
Proceedings of the Sixth International Offshore and Polar Engineering Conference, (ISOPE-96)
, Vol.
2
, pp.
139
145
.
3.
Wilkens
,
R. J.
, 1997, “
Prediction of the Flow Regime Transitions in High Pressure, Large Diameter, Inclined Multiphase Pipelines
,” Ph.D. thesis, Ohio University, Athens, OH.
4.
Jepson
,
W. P.
,
Wilkens
,
R. J.
, and
Maley
,
J. J.
, 1998, “
Flow Regime Determination and Flow Measurement in Multiphase Flow Pipelines
,” U.S. Patent No. 5,708,211.
5.
Scott
,
S. L.
,
Shoham
,
O.
, and
Brill
,
J. P.
, 1989, “
Prediction of Slug Length in Horizontal, Large-Diameter Pipes
,”
SPE Prod. Eng.
0885-9221,
4
, pp.
335
340
.
6.
Hewitt
,
G. F.
, 1978,
Measurement of Two Phase Flow Parameters
,
Academic
,
New York
.
7.
Glassmeyer
,
S. R.
, 2003, “
Suppressing Intermittent Flow Patterns and Reducing Pressure Loss in Two-Phase Horizontal Pipe Flow Using Surfactants
,” MS thesis, University of Dayton, OH.
8.
Taitel
,
Y.
, and
Dukler
,
A. E.
, 1976, “
A Model for Predicting Flow Regime Transitions in Horizontal and Near Horizontal Gas-Liquid Flow
,”
AIChE J.
0001-1541,
22
, pp.
47
55
.
9.
Dukler
,
A. E.
, and
Hubbard
,
M. G.
, 1975, “
A Model for Gas-Liquid Slug Flow in Horizontal and Near Horizontal Tubes
,”
Ind. Eng. Chem. Fundam.
0196-4313,
14
, pp.
337
347
.
10.
Jepson
,
W. P.
, 1989, “
Modelling the Transition to Slug Flow in Horizontal Conduit
,”
Can. J. Chem. Eng.
0008-4034,
67
, pp.
731
740
.
11.
Gregory
,
G. A.
, and
Scott
,
D. S.
, 1969, “
Correlation of Liquid Slug Velocity and Frequency in Horizontal Cocurrent Gas-Liquid Slug Flow
,”
AIChE J.
0001-1541,
15
, pp.
933
935
.
12.
Bendiksen
,
K. H.
, 1984, “
An Experimental Investigation of the Motion of Long Bubbles in Inclined Tubes
,”
Int. J. Multiphase Flow
0301-9322,
10
, pp.
467
483
.
13.
Woods
,
B. D.
, 1998, “
Slug Formation and Frequency of Slugging in Gas-Liquid Flows
,” Ph.D. thesis, University of Illinois, Urbana, IL.
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