Evaluation of frictional pressure drop correlations for air-water and air-oil two-phase flow in pipeline-riser system  

作　　者：Nai-Liang Li Bin Chen 

机构地区：[1]School of Low-carbon Energy and Power Engineering,China University of Mining and Technology,Xuzhou,221116,Jiangsu,China [2]State Key Laboratory of Multiphase Flow in Power Engineering,Xi’an Jiaotong University,Xi’an,710049,Shaanxi,China

出　　处：《Petroleum Science》2024年第2期1305-1319,共15页石油科学（英文版）

基　　金：the support of the Opening Fund of State Key Laboratory of Multiphase Flow in Power Engineering(SKLMF-KF-2102)。

摘　　要：Accurate prediction of the frictional pressure drop is important for the design and operation of subsea oil and gas transporting system considering the length of the pipeline. The applicability of the correlations to pipeline-riser flow needs evaluation since the flow condition in pipeline-riser is quite different from the original data where they were derived from. In the present study, a comprehensive evaluation of 24prevailing correlation in predicting frictional pressure drop is carried out based on experimentally measured data of air-water and air-oil two-phase flows in pipeline-riser. Experiments are performed in a system having different configuration of pipeline-riser with the inclination of the downcomer varied from-2°to-5°to investigated the effect of the elbow on the frictional pressure drop in the riser. The inlet gas velocity ranges from 0.03 to 6.2 m/s, and liquid velocity varies from 0.02 to 1.3 m/s. A total of885 experimental data points including 782 on air-water flows and 103 on air-oil flows are obtained and used to access the prediction ability of the correlations. Comparison of the predicted results with the measured data indicate that a majority of the investigated correlations under-predict the pressure drop on severe slugging. The result of this study highlights the requirement of new method considering the effect of pipe layout on the frictional pressure drop.

关 键 词：Frictional pressure drop Pipeline-riser Gas-liquid two-phase flow Severe slugging CORRELATION 

分 类 号：TE973[石油与天然气工程—石油机械设备]