Slug-tracking model for hilly terrain pipelines

Y. Taitel*, D. Barnea

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Slug flow is a very common occurrence in gas-liquid two-phase flow. Usually, it is an unfavorable flow pattern due to its unsteady nature, intermittency, and high-pressure drop. A hilly terrain pipeline consists of horizontal, uphill, and downhill sections. While slug flow is relatively well understood for any of the three configurations, there is a lack of understanding of how flow characteristics change when these configurations are interconnected, as in a hilly terrain pipeline. Almost all-previous slug flow studies assume a constant slug length once a slug is formed and developed into a stable slug. In reality, a slug can grow or shrink as it travels through a pipeline as a consequence of the hilly terrain configuration. In addition, slugs can be generated at low "elbows" and dissipate at top "elbows." An experimental study conducted by Zheng et al. and Zheng clearly demonstrates the effect of hilly terrain pipeline configuration on slug characteristics. In the present work slug behavior in low and top elbows is simulated and studied. The effect of compressibility is included.

Original languageEnglish
Pages (from-to)102-109
Number of pages8
JournalSPE Journal
Issue number1
StatePublished - Mar 2000


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