Investigation on Method of Water Holdup Prediction   for Oil-Ｗater Flow in Vertical Pipes
Li Mingzhong^１,Wang Weiyang^２,Chen Tingkuan^２,XueJianquan^１
(1.Department of  Petroleum, Petroleum University(East China),Dongying 257062,China;2. School of Energy and Power Engineering,Xi'anJiaotong University)

Abstract: Oilcen-water two-phase flows in vertical pipes were investigated theoretically and experimentally.The drift flux model was improved to analyze the experimental data. A few key parameters were determined with curve-fitting method ,and a new model was obtained based on the experimental data. It was found that the slippage between water phase and oil phase was influenced by water cut and the flow rate of oil-water mixture, and the influence was more serious under lower water cut and lower flow rate. The proposed model was validated by our data and the others ,and shows that the performance of new model was better than others published in the literature.
Keywords: oil-water flow;water holdup;predicting model