采出液黏度对井下旋流器分离性能影响
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摘要
基于计算流体动力学Fluent软件,运用雷诺应力模型(RSM)与群体平衡模型(PBM)耦合方法,研究采出液黏度对井下旋流器内速度场、体积分数场、粒度分布及油水分离效率的影响规律。结果表明:采出液黏度对井下旋流器内油相分布影响较大,随黏度的逐渐增大,旋流器溢流口油相体积分数逐渐减小,油滴粒径逐渐降低,分离效率也逐渐降低,当采出液黏度高于4.67mPa·s时,旋流器分离效率降至90%以下;黏度对旋流器内速度场影响较小,零轴速包络面及准自由涡与强制涡分界面基本不随黏度的变化而发生明显改变。该研究结果为井下旋流器的高效应用提供指导。
Based on the reynolds stress model(RSM)of the computational fluid dynamics(CFD)software fluent,the velocity field,distribution of particle size,concentration field and separation efficiency of the downhole hydrocyclone were analyzed by numerical simulation and experiment.Results show that viscosity of produced fluid had a great effect on the distribution of oil phase of downhole hydrocyclone,as the viscosity increased gradually,separation efficiency of cyclone decreased.When the viscosity is higher than 4.67 mPa·s,separation efficiency of cyclone is lower than 90%.The viscosity of fluid has no direct effect on the velocity profile,position of LZVV and interface of quasi-free vortex and quasi-forced vortex had no obvious move.The research can provide guidance for the efficient application of downhole hydrocyclone.
Based on the reynolds stress model(RSM)of the computational fluid dynamics(CFD)software fluent,the velocity field,distribution of particle size,concentration field and separation efficiency of the downhole hydrocyclone were analyzed by numerical simulation and experiment.Results show that viscosity of produced fluid had a great effect on the distribution of oil phase of downhole hydrocyclone,as the viscosity increased gradually,separation efficiency of cyclone decreased.When the viscosity is higher than 4.67 mPa·s,separation efficiency of cyclone is lower than 90%.The viscosity of fluid has no direct effect on the velocity profile,position of LZVV and interface of quasi-free vortex and quasi-forced vortex had no obvious move.The research can provide guidance for the efficient application of downhole hydrocyclone.
引文
[1]徐保蕊,蒋明虎,赵立新.采出液黏度对三相分离器性能的影响[J].机械工程学报,2017,53(8):175-182.Xu Baorui,Jiang Minghu,Zhao Lixin.Effect of production fluid viscosity on the performance of three phase separation hydrocyclone[J].School of Mechanical Science and Engineering,2017,53(8):175-182.
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[10]徐艳,张彦月,徐德奎,等.振动条件下旋流分离器内螺旋流的流固耦合研究[J].中国石油大学学报:自然科学版,2017,41(4):140-147.Xu Yan,Zhang Yanyue,Xu Dekui,et al.Study on fluid-structure interaction in hydrocyclone under vibration[J].Journal of China University of Petroleum:Edition of Natural Science,2017,41(4):140-147.
[11]Mokni I,Dhaouadi H,Bournot P,et al.Numerical investigation of the effect of the cylindrical heighton separation performances of uniflow hydrocyclone[J].Chemical Engineering Science,2015(122):500-513.
[12]蒋明虎.旋流分离技术研究及其应用[J].大庆石油学院学报,2010,34(5):101-105.Jiang Minghu.Research and application of hydrocyclonic separation technology[J].Journal of Daqing Petroleum Institute,2010,34(5):101-105.
[13]吴柏志,赵立新,蒋明虎,等.力旋流器内颗粒受力与运动分析[J].大庆石油学院学报,2005,29(6):64-66.Wu Baizhi,Zhao Lixin,Jiang Minghu,et al.Mechanics and kinematics analysis of the particles inside hydrocyclones[J].Journal of Daqing Petroleum Institute,2005,29(6):64-66.
[14]刘书孟,董喜贵,刘鼎恒,等.黏度对三相分离旋流器性能影响的数值模拟[J].石油化工设备,2014,43(3):27-30.Liu Shumeng,Dong Xigui,Liu Dingheng,et al.Numerical simulation of viscosity on separation performance of Three-phase hydrocyclones[J].Petro-Chenmical Equipment,2014,43(3):27-30.
[15]Joseph A,Ajienka J A.A review of water shutoff treatment strategies in oil fields[C].SPE 136969,2010.
[16]高扬,刘合,张勇.采出液含砂对井下两级串联旋流器分离性能影响[J].东北石油大学学报,2018,42(1):112-120.Gao Yang,Liu He,Zhang Yong.Study on the effect of separation performance of downhole hydrocyclones in series with different sand content[J].Journal of Northeast Petroleum University,2018,42(1):112-120.
[17]Amini S,Mowla D,Golkar M,et al.Mathematical modelling of a hydrocyclone for the down-hole oil-water separation(DOWS)[J].Chemical Engineering Research and Design,2012,90:2186-2195.
[18]赵传伟,李增亮,许文艺,等.井下双级串联式水力旋流器的结构参数优化[J].化学工程,2014,42(6):48-53.Zhao Chuanwei,Li Zengliang,Xu Wenyi,et al.Numerical simulation and experiment of downhole two-stage tandem hydrocyclone[J].Chemical Engineering(China),2014,42(6):48-53.
[19]王羕.井下两级串联旋流分离技术研究[D].大庆:东北石油大学,2014.Wang Yang.Research of downhole two-stage in-series hydrocyclone separation technology[D].Daqing:Northeast Petroleum University,2014.
[20]宋鸽.井下油水分离管柱内空间结构优化[D].大庆:东北石油大学,2015.Song Ge.Structure optimization of tube space in downhole oil-water separation[D].Daqing:Northeast Petroleum University,2015.
[2]蒋明虎,邢雷,张勇.基于离散相运移轨迹的新型旋流入口结构设计[J].流体机械,2016,45(10):42-46.Jiang Minghu,Xing Lei,Zhang Yong.Design of the entrance structure based on discrete phase oil droplet in vortex field[J].Fluid Machinery,2016,45(10):42-46.
[3]徐保蕊,蒋明虎,赵立新,等.螺旋分离器水流动特性的CFD模拟与PIV试验[J].石油学报,2018,39(2):223-231.Xu Baorui,Jiang Minghu,Zhao Lixin,et al.CFD simulation and PIV test of water flow characteristics in helix separator[J].Acta Petrolei Sinica,2018,39(2):223-231.
[4]Zhao Lixin,Jiang Minghu,Xu Baorui,et al.Development of a new type high-efficient inner-cone hydrocyclone[J].Chemical Engineering Research and Design,2012,90(12):2129-2134.
[5]张勇,邢雷,蒋明虎,等.离散相粒径对旋流器分离性能的影响[J].东北石油大学学报,2018,42(2):109-116.Zhang Yong,Xing Lei,Jiang Minghu,et al.Influences of discrete phase particle size on hydrocyclone separation performance[J].Journal of Northeast Petroleum University,2018,42(2):109-116.
[6]栾希炜,曹会哲.油田采出水一级处理工艺的研究[J].给水排水,2001,27(3):52-54.Luan Xiwei,Cao Huizhe.Study on the first-level treatment process of oilfield production[J].Water Supply and Drainage,2001,27(3):52-54.
[7]王家禄,沈平平,陈永忠,等.三元复合驱提高原油采收率的三维物理模拟研究[J].石油学报,2005,26(5):65-70.Wang Jialu,Shen Pingping,Chen Yongzhong,et al.3-D physical modeling of enhanced oil recovery by alkali-surfactant-polymer flooding[J].Acta Petrolei Sinica,2005,26(5):65-70.
[8]卢祥国,王风兰,包亚臣.聚合物驱后三元复合驱油效果评价[J].油田化学,2000,17(2):159-163.Lu Xiangguo,Wang Fenglan,Bao Yachen.A study on solubility and equilibrium dissolution constant of methane in ASP flooding solution[J].Oilfield Chemistry,2000,17(2):159-163.
[9]李士奎,朱焱,赵永胜,等.大庆油田三元复合驱试验效果评价研究[J].石油学报,2005,26(3):56-59.Li Shikui,Zhu Yan,Zhao Yongsheng,et al.Evaluation of pilot results of alkali-surfactant-polymer flooding in Daqing oilfield[J].Acta Petrolei Sinica,2005,26(3):56-59.
[10]徐艳,张彦月,徐德奎,等.振动条件下旋流分离器内螺旋流的流固耦合研究[J].中国石油大学学报:自然科学版,2017,41(4):140-147.Xu Yan,Zhang Yanyue,Xu Dekui,et al.Study on fluid-structure interaction in hydrocyclone under vibration[J].Journal of China University of Petroleum:Edition of Natural Science,2017,41(4):140-147.
[11]Mokni I,Dhaouadi H,Bournot P,et al.Numerical investigation of the effect of the cylindrical heighton separation performances of uniflow hydrocyclone[J].Chemical Engineering Science,2015(122):500-513.
[12]蒋明虎.旋流分离技术研究及其应用[J].大庆石油学院学报,2010,34(5):101-105.Jiang Minghu.Research and application of hydrocyclonic separation technology[J].Journal of Daqing Petroleum Institute,2010,34(5):101-105.
[13]吴柏志,赵立新,蒋明虎,等.力旋流器内颗粒受力与运动分析[J].大庆石油学院学报,2005,29(6):64-66.Wu Baizhi,Zhao Lixin,Jiang Minghu,et al.Mechanics and kinematics analysis of the particles inside hydrocyclones[J].Journal of Daqing Petroleum Institute,2005,29(6):64-66.
[14]刘书孟,董喜贵,刘鼎恒,等.黏度对三相分离旋流器性能影响的数值模拟[J].石油化工设备,2014,43(3):27-30.Liu Shumeng,Dong Xigui,Liu Dingheng,et al.Numerical simulation of viscosity on separation performance of Three-phase hydrocyclones[J].Petro-Chenmical Equipment,2014,43(3):27-30.
[15]Joseph A,Ajienka J A.A review of water shutoff treatment strategies in oil fields[C].SPE 136969,2010.
[16]高扬,刘合,张勇.采出液含砂对井下两级串联旋流器分离性能影响[J].东北石油大学学报,2018,42(1):112-120.Gao Yang,Liu He,Zhang Yong.Study on the effect of separation performance of downhole hydrocyclones in series with different sand content[J].Journal of Northeast Petroleum University,2018,42(1):112-120.
[17]Amini S,Mowla D,Golkar M,et al.Mathematical modelling of a hydrocyclone for the down-hole oil-water separation(DOWS)[J].Chemical Engineering Research and Design,2012,90:2186-2195.
[18]赵传伟,李增亮,许文艺,等.井下双级串联式水力旋流器的结构参数优化[J].化学工程,2014,42(6):48-53.Zhao Chuanwei,Li Zengliang,Xu Wenyi,et al.Numerical simulation and experiment of downhole two-stage tandem hydrocyclone[J].Chemical Engineering(China),2014,42(6):48-53.
[19]王羕.井下两级串联旋流分离技术研究[D].大庆:东北石油大学,2014.Wang Yang.Research of downhole two-stage in-series hydrocyclone separation technology[D].Daqing:Northeast Petroleum University,2014.
[20]宋鸽.井下油水分离管柱内空间结构优化[D].大庆:东北石油大学,2015.Song Ge.Structure optimization of tube space in downhole oil-water separation[D].Daqing:Northeast Petroleum University,2015.