压缩式封隔器接触力学行为及坐封效果评价
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摘要
针对Y341-114型压缩式封隔器,采用Yeoh橡胶本构模型,在封隔器坐封和坐封后两种工况下,运用有限元分析方法对封隔器的非线性接触力学行为进行了模拟研究,分析了该封隔器坐封过程中施加的载荷与轴向压缩量的关系以及坐封后的强度、接触应力和摩擦力校核。结果表明:在封隔器坐封过程中,中胶筒首先与套管发生接触,其次是上胶筒,最后是下胶筒;封隔器坐封后胶筒的应力集中于胶筒的肩部,其中下肩部应力集中现象尤为明显;胶筒与套管之间的摩擦力、接触应力均能满足分层注水工艺设计要求,能够有效封隔15 MPa的层间压差。
Based on Yeoh rubber constitutive model,the non-linear contact mechanical behavior of compression packer Y341-114 in setting process and after setting was simulated using finite element analysis method.The relationship between the load applied during the setting process and the axial compression distance was analyzed,andthe strength,contact stress and friction of the packer after setting were checked.The results show that in the setting process of packer,the middle rubber cylinder first contacts with casing,followed by the upper rubber cylinder and the lower rubber cylinder;After the packer is seated,the stress of the rubber cylinder concentrates on the shoulder of it,especially on the lower shoulder;Friction and contact stress between rubber cylinder and casing can meet the design requirements of layered water injection process,and the packer can effectively seal the interlayer pressure difference of 15 MPa.
Based on Yeoh rubber constitutive model,the non-linear contact mechanical behavior of compression packer Y341-114 in setting process and after setting was simulated using finite element analysis method.The relationship between the load applied during the setting process and the axial compression distance was analyzed,andthe strength,contact stress and friction of the packer after setting were checked.The results show that in the setting process of packer,the middle rubber cylinder first contacts with casing,followed by the upper rubber cylinder and the lower rubber cylinder;After the packer is seated,the stress of the rubber cylinder concentrates on the shoulder of it,especially on the lower shoulder;Friction and contact stress between rubber cylinder and casing can meet the design requirements of layered water injection process,and the packer can effectively seal the interlayer pressure difference of 15 MPa.
引文
[1] ARRUDA E M,BOYCE M C.Constitutive models of rubber elasticity:a review[J].Rubber Chemistry and Technology,2000,73(3):504-523.
[2] 贾善坡,闫相祯,杨丽.封隔器胶筒大变形摩擦接触的有限元分析[J].润滑与密封,2005(4):71-74,83.
[3] Al-KHARUSI M S M,QAMAR S Z.Non-linear model for evaluation of elastomer seals subjected to differential pressure[J].Society of Petroleum Engineers,2011.
[4] 刘松,吴静,董晓明.压缩式封隔器胶筒结构改进及密封性能分析[J].石油矿场机械,2013,42(4):67-70.LIU Song,WU Jing,DONG Xiaoming.Structural improvement and sealing performance analysis of compressed packer rubber tube[J].Petroleum Mining Machinery,2013,42(4):67-70.
[5] 周晓君,段志明,王剑,等.基于Workbench分析封隔器胶筒密封性能[J].工业控制计算机,2013,26(11):111-113.ZHOU Xiaojun,DUAN Zhiming,WANG Jian,et al.Analysis of sealing capacitor sealing performance based on workbench[J].Industrial Control Computer,2013,26(11):111-113.
[6] 陈家照,黄闽翔,王学仁,等.几种典型的橡胶材料本构模型及其适用性[J].材料导报,2015,29(S1):118-120,124.
[7] 黄建龙,解广娟,刘正伟.基于Mooney-Rivlin模型和Yeoh模型的超弹性橡胶材料有限元分析[J].橡胶工业,2008,55(8):467-471.HUANG Jianlong,XIE Guangjuan,LIU Zhengwei.Finite element analysis of superelastic rubber material based on Mooney-Rivlin Model and Yeoh Model[J].Rubber Industry,2008,55(8):467-471.
[8] 王尊策,管翠翠,温后珍,等.Y341-114型注水封隔器胶筒与套管摩擦力试验研究[J].石油矿场机械,2012,41(7):66-69.WANG Zunce,GUAN Cuicui,WEN Houzhen,et al.Experimental study on friction between Y341-114 water injection packer and casing[J].Petroleum Field Machinery,2012,41(7):66-69.
[9] 王云学,许仁波,孟奇龙,等.压缩式封隔器胶筒接触力学行为有限元分析[J].武汉科技大学学报,2017,40(1):61-64.WANG Yunxue,XU Renbo,MENG Qilong,et al.Finite element analysis of contact mechanical behavior of compressed packer rubber tube[J].Journal of Wuhan University of Science and Technology,2017,40(1):61-64.
[10] 王祥立.长胶筒封隔器的研制与应用研究[D].北京:中国石油大学(北京),2009.
[11] RICHARD G Budynas.Advanced Strength and Applied Stress Analysis[M].2nd ed.北京:清华大学出版社,2001.
[12] 北京兆迪科技.ANSYS WORKBENCH 14.0结构分析快速入门:进阶与精通(2DVD)[M].北京:电子工业出版社,2014.
[2] 贾善坡,闫相祯,杨丽.封隔器胶筒大变形摩擦接触的有限元分析[J].润滑与密封,2005(4):71-74,83.
[3] Al-KHARUSI M S M,QAMAR S Z.Non-linear model for evaluation of elastomer seals subjected to differential pressure[J].Society of Petroleum Engineers,2011.
[4] 刘松,吴静,董晓明.压缩式封隔器胶筒结构改进及密封性能分析[J].石油矿场机械,2013,42(4):67-70.LIU Song,WU Jing,DONG Xiaoming.Structural improvement and sealing performance analysis of compressed packer rubber tube[J].Petroleum Mining Machinery,2013,42(4):67-70.
[5] 周晓君,段志明,王剑,等.基于Workbench分析封隔器胶筒密封性能[J].工业控制计算机,2013,26(11):111-113.ZHOU Xiaojun,DUAN Zhiming,WANG Jian,et al.Analysis of sealing capacitor sealing performance based on workbench[J].Industrial Control Computer,2013,26(11):111-113.
[6] 陈家照,黄闽翔,王学仁,等.几种典型的橡胶材料本构模型及其适用性[J].材料导报,2015,29(S1):118-120,124.
[7] 黄建龙,解广娟,刘正伟.基于Mooney-Rivlin模型和Yeoh模型的超弹性橡胶材料有限元分析[J].橡胶工业,2008,55(8):467-471.HUANG Jianlong,XIE Guangjuan,LIU Zhengwei.Finite element analysis of superelastic rubber material based on Mooney-Rivlin Model and Yeoh Model[J].Rubber Industry,2008,55(8):467-471.
[8] 王尊策,管翠翠,温后珍,等.Y341-114型注水封隔器胶筒与套管摩擦力试验研究[J].石油矿场机械,2012,41(7):66-69.WANG Zunce,GUAN Cuicui,WEN Houzhen,et al.Experimental study on friction between Y341-114 water injection packer and casing[J].Petroleum Field Machinery,2012,41(7):66-69.
[9] 王云学,许仁波,孟奇龙,等.压缩式封隔器胶筒接触力学行为有限元分析[J].武汉科技大学学报,2017,40(1):61-64.WANG Yunxue,XU Renbo,MENG Qilong,et al.Finite element analysis of contact mechanical behavior of compressed packer rubber tube[J].Journal of Wuhan University of Science and Technology,2017,40(1):61-64.
[10] 王祥立.长胶筒封隔器的研制与应用研究[D].北京:中国石油大学(北京),2009.
[11] RICHARD G Budynas.Advanced Strength and Applied Stress Analysis[M].2nd ed.北京:清华大学出版社,2001.
[12] 北京兆迪科技.ANSYS WORKBENCH 14.0结构分析快速入门:进阶与精通(2DVD)[M].北京:电子工业出版社,2014.