Holdup estimation in core flow using image processing

In this work holdup is estimated through image processing and compared with the value calculated indirectly by the correlation presented by Rodriguez et al. in [1]. The tests were performed in the multiphase-flow test facilities of the Research Centre (CENPES) of PETROBRAS, Brazil. Flow images were obtained with a high-speed video camera at 1000 fps in a 2 7/8-inch and 300 meter deep pilot-scale well, conveying a mixture of heavy crude oil (2000 mPa.s and 95 0 kg/m3 at 35 °C) and water at several combinations of the individual flow rates. In total, four tests were carried out with 100 images each.