气井出砂对涡流工具携液能力的影响
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摘要
为分析气井出砂对涡流工具携液能力的影响情况,针对气井井底积液以及井筒中存在固体杂质的问题,提出了一种气井中涡流工具携液携砂的三相流模型。通过对气井含砂与不含砂的情况进行模拟,分析了不同条件下涡流工具的携液作用,得到了气井出砂对液相流动规律、体积分数、速度分布的影响情况。结果表明:出砂量为10%的情况下,气井含砂有利于气井携液。气井含砂使运动阻力增加,液相的运动速度减小,轴向速度分布不规律,紊流程度增强,从而使运动更加复杂,气井对液体的携带作用增强;气井含砂使液相的运动速度减小且分布不规律。研究结果对进一步完善涡流工具的排水采气机理、提升气井的携液携砂效果具有参考价值。
In order to analyze the effect of gas-well sand production on the liquid carrying capacity of the vortex tool,aiming at the problem of simultaneous sand production and water discharge in gas wells,a three-phase flow model of eddy current tool carrying liquid and sand is proposed.By simulating the sand and sand-free conditions of gas wells,and by analyzing the liquidcarrying of swirl tool under different conditions,the influence of gas-well sand production on liquid phase flow pattern,volume fraction and velocity distribution is obtained.It is concluded that the sand content of the gas well is beneficial to the liquid well carrying liquid in the case of 10%sand production,gas-well sand causes motion resistance increasing,movement speed decreasing of the liquid phase,causing irregular axial velocity distribution,and increased turbulence,thereby making the movement more complicated,and enhancing the carrying effect of the gas-well on the liquid.The sand content of the gas-well reduces the movement speed of the liquid phase and the distribution is irregular.The research result provides reference for further development of the theory of swirl tool drainage gas recovery and the carrying effect of gas-well on liquid and sand.
In order to analyze the effect of gas-well sand production on the liquid carrying capacity of the vortex tool,aiming at the problem of simultaneous sand production and water discharge in gas wells,a three-phase flow model of eddy current tool carrying liquid and sand is proposed.By simulating the sand and sand-free conditions of gas wells,and by analyzing the liquidcarrying of swirl tool under different conditions,the influence of gas-well sand production on liquid phase flow pattern,volume fraction and velocity distribution is obtained.It is concluded that the sand content of the gas well is beneficial to the liquid well carrying liquid in the case of 10%sand production,gas-well sand causes motion resistance increasing,movement speed decreasing of the liquid phase,causing irregular axial velocity distribution,and increased turbulence,thereby making the movement more complicated,and enhancing the carrying effect of the gas-well on the liquid.The sand content of the gas-well reduces the movement speed of the liquid phase and the distribution is irregular.The research result provides reference for further development of the theory of swirl tool drainage gas recovery and the carrying effect of gas-well on liquid and sand.
引文
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[16]康健.组合式排水采气工具在采气过程中的数值模拟研究[D].大庆:东北石油大学,2016.KANG Jian.The Numerical Simulation Study of Combined Water Drainage Gas Recovery Tools in Gas Production Processes[D].Daqing:Northeast Petroleum University,2016.
[2]常永峰,李凯,常森,等.射流涡流排水采气装置携水数值模拟研究[J].石油机械,2017,45(11):50-55.CHANG Yongfeng,LI Kai,CHANG Sen,et al.Numerical simulation of water carrying on jet vortex drainage gas recovery device[J].China Petroleum Machinery,2017,45(11):50-55.
[3]许剑,赵哲军,朱江.数模与物模相结合研究涡流工具携液机理[J].中外能源,2016,21(7):55-58.XU Jian,ZHAO Zhejun.Numerical simulation and physical modeling on liquid carrying mechanism of vortex tool[J].Sino-global Energy,2016,21(7):55-58.
[4]陈德春,韩昊.气井涡流工具作用效果分析与临界携液流量实验研究[J].天然气地球科学,2015,26(11):2137-2141.CHEN Dechun,HAN Hao.An experimental study on the effect of the vortex tool and its influence on critical velocit[J].Natural Gas Geoscience,2015,26(11):2137-2141.
[5]李洪波.气砂两相流在天然气开采过程中的理论及实验研究[D].成都:四川大学,2004.LI Hongbo.Theoretical and Experimental Study on Gas Sand Two-phase in Natural Gas Exploitation[D].Chengdu:Sichuan University,2004.
[6]杨旭东,李丽,张军,等.井下涡流工具排水采气机理研究[J].石油机械,2015,43(5):81-86.YANG Xudong,LI Li,ZHANG Jun.Mechanism study of downhole vortex tool for water drainage during gas production[J].China Petroleum Machinery,2015,43(5):81-86.
[7]徐建宁,邵乐,梁慧荣,等.基于正交试验的涡流排水采气影响因素分析[J].石油矿场机械,2014,43(11):52-56.XU Jianning,SHAO Le,LIANG Huirong,et al.Based on orthogonal experiment analysis of factors affecting ortex drainage gas[J].Oil field Equipment,2014,43(11):52-56.
[8]高晖,郭烈锦,张西民.螺旋管内气液固三相流颗粒相分布规律[J].工程热物理学报,2004,25(1):69-72.GAO Hui,GUO Liejin,ZHANG Ximin.Particle phase distribution in gas-liquid-solid three-phase through helically coiled tube[J].Journal of Engineering Thermophysics,2004,25(1):69-72.
[9]赵玉新.FLUENT技术基础及应用实例[M].北京:清华大学出版社,2010.
[10] SURENDRA M,FALCONE G C.Investigation of Swirl Flows Applied to the Oil and Gas Industry[R].[S.l.]:SPE115938,2008.
[11]张少峰,孙姣.气液固循环流化床颗粒分布板实验研究[J].化学工程,2006,34(3):20-23.ZHANG Shaofeng,SUN Jiao.Experimental study on particle distributor in gas-liquid-solid circulating fluidized bed[J].Chemical Engineering,2006,34(3):20-23.
[12]任垒,贾然,曹正安,等.井下涡流工具排液效果影响因素研究进展[J].机械研究与应用,2015,28(3):49-51.REN Base,JIA Ran,CAO Zhengan,et al.Research status and outlook of vortex tool for liquid discharge in gas well[J].Mechanical Research and Application,2015,28(3):49-51.
[13]张春,金大权,王晋,等.苏里格气田井下涡流排水采气工艺研究[J].天然气技术与经济,2012,6(5):45-48.ZHANG Chun,JIN Daquan,WANG Jin,et al.Drainage gas recovery by downhole eddy current used Sulige gasfield[J].Natural Gas Technology and Economy,2012,6(5):45-48.
[14]周际永,伊向艺,卢渊.国内外排水采气工艺综述[J].太原理工大学学报,2005,36(sup1):44-45.
[15]熊健,李凌峰,张涛.气井临界携液流量的计算方法[J].天然气与石油,2011,29(4):54-56.XIONG Jian,LI Lingfeng,ZHANG Tao.Calculation of critical liquid carrying flow rate in gas well[J].Natural Gas and Oil,2011,29(4):54-56.
[16]康健.组合式排水采气工具在采气过程中的数值模拟研究[D].大庆:东北石油大学,2016.KANG Jian.The Numerical Simulation Study of Combined Water Drainage Gas Recovery Tools in Gas Production Processes[D].Daqing:Northeast Petroleum University,2016.