串并联管路条件下的油水两相流动综合模型
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摘要
油水两相混合流动是油田开发过程中常见的流动形式。然而,目前的研究主要局限于单一恒径管道内,缺乏对并联或串联管路等复杂管路内流体流动的研究。基于管路串并联理论、流型转变准则、双流体模型和均相流模型,建立了复杂管路油水两相流动的综合模型,结合实例对该模型进行了验证,与数值模拟结果进行了比较。研究结果表明,该模型对油水两相在复杂管路中的分流情况和压降均表现出了良好的预测性,在两相体积含水率分别为0%～100%条件下,模型预测的绝对平均百分误差最高为14. 4%,总体平均误差为9. 8%。
Oil-water two-phase flow in the complex pipeline,consisting of varying pipes and fittings in series/parallel,is commonly encountered in the petroleum industry. However,the study is mainly limited to single constant-radius pipe. A unified model of oil-water two-phase flow in the complex pipeline is developed based on the combination of pipe serial-parallel theory,flow pattern transformation criterion,two-fluid model and homogenous model. A case is present to verify the unified model and to compare with CFD results. The results show that the unified model has a good performance on predicting both the flow distributions and pressure drops of oil-water twophase flow in the complex pipeline. Compared with CFD results for water volumetric fractions ranging from 0% to 100%,the highest absolute percentage errors of the proposed model is 14. 4% and the average is 9. 8%.
Oil-water two-phase flow in the complex pipeline,consisting of varying pipes and fittings in series/parallel,is commonly encountered in the petroleum industry. However,the study is mainly limited to single constant-radius pipe. A unified model of oil-water two-phase flow in the complex pipeline is developed based on the combination of pipe serial-parallel theory,flow pattern transformation criterion,two-fluid model and homogenous model. A case is present to verify the unified model and to compare with CFD results. The results show that the unified model has a good performance on predicting both the flow distributions and pressure drops of oil-water twophase flow in the complex pipeline. Compared with CFD results for water volumetric fractions ranging from 0% to 100%,the highest absolute percentage errors of the proposed model is 14. 4% and the average is 9. 8%.
引文
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13 陈家琅,陈涛平.石油气液两相管流[M].北京:石油工业出版社,2010Chen Jialang,Chen Taoping. Gas-liquid two-phase pipe flow[M].Beijing:Petroleum Industry Press,2010
14 车得福,李会雄.多相流及其应用[M].西安:西安交通大学出版社,2007Che Defu,Li Huixiong. Multiphase flow and its application[M].Xi'an:Xi'an Jiaotong University Press,2007
2 徐翠.近水平小管径油水两相数值模拟研究[J].石油管材与仪器,2016,2(5):21-25Xu Cui. Numerical simulation research on nearly horizontal small diameter oil-water two phase[J]. Petroleum Tubular Goods&Instruments,2016,2(5):21-25
3 阳明君.水平井自动相选择控制阀控水完井技术研究[D].成都:西南石油大学,2017Yang Mingjun. Water control and completion technology research of automatic phase selection controller in the horizontal wellbore[D].Chengdu:Southwest Petroleum University,2017
4 赵麟,汪志明,曾泉树,等.多级限流AICD装置的结构设计及性能测试[J].科学技术与工程,2018,18(2):227-231Zhao Lin,Wang Zhiming,Zeng Quanshu,et al. A novel design and its performance test of new type AICD[J]. Science Technology and Engineering,2018,18(2):227-231
5 汪志明,肖京男,魏建光,等.水平井筒油水变质量分散流动压降研究[J].水动力学研究与进展(A辑),2011,26(3):284-288Wang Zhiming,Xiao Jingnan,Wei Jianguang,et al. Study on pressure drop of oil-water vary mass dispersed flow in horizontal wellbore[J]. Chinese Journal of Hydrodynamics(A),2011,26(3):284-288
6 王玮,宫敬.油水两相管流反相模型研究[J].石油学报,2008,29(1):139-142Wang Wei,Gong Jing. Improved phase inversion model during oilwater two phase fluid flow in pipeline[J]. Acta Petrol et Sinica,2008,29(1):139-142
7 张权.水平井筒油气水多相变质量流动实验与模型研究[D].北京:中国石油大学(北京),2013Zhang Quan. Experimental research and modeling of gas/oil/water multiphase variable mass flow rules in the horizontal wellbore[D].Beijing:China University of Petroleum(Beijing),2013
8 Kamila M G,Marcin P,Leon T. Study on oil-water two-phase upflow in vertical pipes[J]. Journal of Petroleum Science and Engineering,2014,117:28-36
9 高宏,汪志明,曹砚锋,等.油水两相管流反相模型研究[J].中国海上油气,2017,29(6):122-128Gao Hong,Wang Zhiming,Cao Yanfeng,et al. Research on the sand carrying capacity of heavy oil-water based on full-size simulation equipment[J]. China Offshore Oil and Gas,2017,29(6):122-128
10 Zhao L,Wang Z M,Zeng Q S. An experiment study on the structure optimization and performance analysis of a novel autonomous inflow control device design[C]//The International Conference on Computational&Engineering and Science. Portugal:Springer-Verlag,2017
11 Atmaca S,Sarica C,Zhang H Q,et al. Characterization of oil/water flows in inclined pipes[J]. SPE Projects,Facilities&Construction,2009,4(2):41-46
12 汪志明.复杂结构井完井优化理论及应用[M].北京:石油工业出版社,2010Wang Zhiming. The completion optimization theory and application of complex well[M]. Beijing:Petroleum Industry Press,2010
13 陈家琅,陈涛平.石油气液两相管流[M].北京:石油工业出版社,2010Chen Jialang,Chen Taoping. Gas-liquid two-phase pipe flow[M].Beijing:Petroleum Industry Press,2010
14 车得福,李会雄.多相流及其应用[M].西安:西安交通大学出版社,2007Che Defu,Li Huixiong. Multiphase flow and its application[M].Xi'an:Xi'an Jiaotong University Press,2007