Author： Metin C. Omurlu Ozbayoglu M. E.
Publisher： Taylor & Francis Ltd
ISSN： 1091-6466
Source： Petroleum Science and Technology, Vol.27, Iss.15, 2009-10, pp. : 1771-1782
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Abstract
In this study, empirical friction factor correlations were developed for two-phase stratified- and intermittent-flow patterns through horizontal fully eccentric annuli. Two-phase flow hydraulics were investigated, and a flow pattern prediction model is proposed. The friction factor correlations were validated using experimental data collected at the multiphase flow loop METU-PETE-CTMFL. Two different geometrical configurations were used during experiments—that is, 0.1143 m inner diameter (ID) casing, 0.0571 m outer diameter (OD) drillpipe; and 0.0932 m ID casing, 0.0488 m OD drillpipe. The eccentric annuli has been represented by representative diameter dr. A new mixture Reynolds number based on liquid holdup is proposed for friction factor determination.
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