Abstract
This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper IPTC 19769, “Modeling Liquid Holdups in Pseudoslugs,” by Yilin Fan, SPE, Colorado School of Mines; Eissa Al-Safran, SPE, Kuwait University; and Eduardo Pereyra, SPE, The University of Tulsa, et al., prepared for the 2020 International Petroleum Technology Conference, Dhahran, Saudi Arabia, 13-15 January. The paper has not been peer reviewed. Copyright 2020 International Petroleum Technology Conference. Reproduced by permission. Pseudoslug flow does not comply with the basic characteristics of conventional unit-cell slug flow. The liquid in the pseudoslug body is insufficient to reach the upper part of the pipe wall, resulting in only a large wave with entrained gas bubbles at the bottom part of the pseudoslug body. The pseudoslug body can be divided into two regions, liquid film (wave) with entrained gas bubbles at the bottom and gas core with entrained liquid droplets. The complete paper develops a plausible physical model of the experimentally observed pseudoslug liquid-holdup phenomenon and models physical and hydrodynamic behavior using a dimensional regression modeling approach.
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