Experimental studies on pipeline transportation of high internal phase emulsions using water-lubricated core-annular flow method

High internal phase emulsions (HIPEs) are highly viscous complex fluids and cannot be easily transported through pipelines. In the present work, we report experimental studies on transportation of HIPEs using water-lubricated core-annular flow (CAF) in a horizontal pipe. We explore two sets of w/o HIPEs having different mass fractions of continuous phase (6.5 and 15 wt%, respectively). The rheology of HIPEs is carefully characterized, and both...