New Revised Correlation to Predict Pressure Drop for Oil-Gas Two-Phase Flow Through Horizontal Pipe

An experimental investigation on oil-gas two-phase flow<br>through a straight horizontal plexiglas pipe within 40mm inner<br>diameter was conducted. The superficial velocity ranges of oil<br>and air were 0.05-0.612m/s and 0.024-50.64m/s, respectively.<br>The atmospheric temperature condition was maintained<br>throughout the experiments.The frictional pressure drop<br>multiplier of two-phase flow was expressed using the<br>Lockhart-Martinelli parameter correlation in accordance with<br>typical flow pattern, but the modification factor C in the<br>correlations was defined afresh according to flow conditions.<br>New predict correlations for pressure gradient in accordance<br>with typical flow patterns were proposed and the mechanisms<br>of pressure drop production were analyzed for each flow<br>patterns. The proposed models give a good agreement with the<br>experimental data.