Investigation of two-phase flow pattern, liquid holdup and pressure drop in viscous oil–gas flow

•Experimental investigation of two-phase pipe flow of dense gas and viscous oil.•Measurement of liquid holdup using narrow-beam and broad-beam gamma densitometers.•Detailed visual observations with the aid of high-speed video captures.•Comparisons of measured data to a model for stratified and slug...

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Bibliographic Details
Published in:International journal of multiphase flow 2014-12, Vol.67, p.37-51
Main Authors: Khaledi, Hatef A., Smith, Ivar Eskerud, Unander, Tor Erling, Nossen, Jan
Format: Article
Language:English
Subjects:
Exact sciences and technology
Flow characteristics
Flow pattern
Flows in ducts, channels, nozzles, and conduits
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Gas–oil flow
Holdup
Liquids
Multiphase and particle-laden flows
Multiphase flow
Natural gas
Nonhomogeneous flows
Physics
Pipe
Point model
Pressure drop
Sulfur hexafluoride
Two-phase flow
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Summary:•Experimental investigation of two-phase pipe flow of dense gas and viscous oil.•Measurement of liquid holdup using narrow-beam and broad-beam gamma densitometers.•Detailed visual observations with the aid of high-speed video captures.•Comparisons of measured data to a model for stratified and slug flow. An experimental investigation was carried out on viscous oil–gas flow characteristics in a 69mm internal diameter pipe. Two-phase flow patterns were determined from holdup time-traces and videos of the flow field in a transparent section of the pipe, in which synthetic commercial oils (32 and 100cP) and sulfur hexafluoride gas (SF6) were fed at oil superficial velocities from 0.04 to 3m/s and gas superficial velocities from 0.0075 to 3m/s.
ISSN:0301-9322
1879-3533
DOI:10.1016/j.ijmultiphaseflow.2014.07.006