A Mechanistic Model for Two-Phase Vertical Slug Flow in Pipes

[+] Author and Article Information
N. D. Sylvester

College of Engineering and Applied Sciences, The University of Tulsa, Tulsa, Okla. 74104

J. Energy Resour. Technol 109(4), 206-213 (Dec 01, 1987) (8 pages) doi:10.1115/1.3231348 History: Received January 20, 1987; Revised July 29, 1987; Online October 22, 2009


This paper presents the formulation of a mechanistic model for slug flow in vertical pipes. The equations required to determine holdup, the relevant velocities and pressure loss are presented. The model is fully deterministic and the pressure drop predictions of the model are compared to experimental field data for oil and gas and gas and water wells. For the 143 data points, the model shows an average percent difference of 4.83 percent, which is felt to be excellent.

Copyright © 1987 by ASME
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