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粘弹性流体法向力作用下的抽油杆柱横向振动仿真

王树强 董世民 张洋 位中达

王树强, 董世民, 张洋, 位中达. 粘弹性流体法向力作用下的抽油杆柱横向振动仿真[J]. 工程力学, 2022, 39(11): 222-232. doi: 10.6052/j.issn.1000-4750.2021.06.0487
引用本文: 王树强, 董世民, 张洋, 位中达. 粘弹性流体法向力作用下的抽油杆柱横向振动仿真[J]. 工程力学, 2022, 39(11): 222-232. doi: 10.6052/j.issn.1000-4750.2021.06.0487
WANG Shu-qiang, DONG Shi-min, ZHANG Yang, WEI Zhong-da. TRANSVERSE VIBRATION SIMULATION OF SUCKER ROD STRINGS UNDER NORMAL DISTRIBUTED LOAD CAUSED BY VISCO-ELASTIC FLUID[J]. Engineering Mechanics, 2022, 39(11): 222-232. doi: 10.6052/j.issn.1000-4750.2021.06.0487
Citation: WANG Shu-qiang, DONG Shi-min, ZHANG Yang, WEI Zhong-da. TRANSVERSE VIBRATION SIMULATION OF SUCKER ROD STRINGS UNDER NORMAL DISTRIBUTED LOAD CAUSED BY VISCO-ELASTIC FLUID[J]. Engineering Mechanics, 2022, 39(11): 222-232. doi: 10.6052/j.issn.1000-4750.2021.06.0487

粘弹性流体法向力作用下的抽油杆柱横向振动仿真

doi: 10.6052/j.issn.1000-4750.2021.06.0487
基金项目: 国家自然科学基金项目(51974276)
详细信息
    作者简介:

    王树强(1993−),男,山东滨州人,博士生,主要从事抽油杆柱屈曲和力学研究(E-mail: wangshuqiang1993@163.com)

    张 洋(1997−),男,四川宜宾人,硕士生,主要从事石油机采仿真及抽油杆杆柱力学研究(E-mail: 1936025628@qq.com)

    位中达(1995−),男,河北辛集人,硕士生,主要从事聚合物驱抽油机井杆柱力学研究(E-mail: weizhongda3@163.com)

    通讯作者:

    董世民(1962−),男,吉林松原人,教授,博士,博导,主要从事机械采油系统动态仿真与运行优化的研究(E-mail: ysudshm@163.com)

  • 中图分类号: TE933

TRANSVERSE VIBRATION SIMULATION OF SUCKER ROD STRINGS UNDER NORMAL DISTRIBUTED LOAD CAUSED BY VISCO-ELASTIC FLUID

  • 摘要: 聚合物抽油机井抽油杆柱在粘弹性流体井筒内偏心运动时,抽油杆柱受到交变粘弹性流体法向力的作用。该文指出了交变粘弹性流体法向力是抽油杆柱横向振动的激励。考虑抽油杆柱所受粘弹性流体法向力与抽油杆柱横向振动位移的耦合关系,建立了受粘弹性流体法向力作用的抽油杆柱在油管内横向振动仿真的力学和数学模型。采用有限差分法和Newmark法实现了对抽油杆柱在油管内横向振动的仿真计算。分析了抽油杆柱在初始偏心和粘弹性流体法向力激励下的横向振动规律。仿真结果表明:抽油杆柱的任何初始偏心都会导致在全井范围内发生杆管碰撞现象;抽油杆柱下冲程杆管碰撞更为剧烈,且泵端附近碰撞力最大;由于粘弹性流体法向力的存在,杆柱与油管壁的接触碰撞更加频繁,加剧了杆管偏磨。所建立的粘弹性流体法向力作用下的抽油杆柱横向振动仿真模型对于聚驱井杆管偏磨分析、扶正器的优化配置具有指导作用。
  • 图  1  抽油杆柱横向振动力学模型

    Figure  1.  Mechanical model of SRS transverse vibration

    图  2  悬点位移和杆柱轴向力

    Figure  2.  Suspension displacement and rod string axial stress

    图  3  抽油杆柱偏心示意图

    Figure  3.  Eccentric schematic diagram of SRS

    4  整体偏心条件下杆柱横向位移变化曲线

    4.  Transverse displacement curves under overall eccentricity

    图  5  局部偏心条件下杆柱横向位移变化曲线

    Figure  5.  Transverse displacement curves under local eccentricity

    图  6  空间屈曲构型

    Figure  6.  Spatial buckling configuration

    图  7  碰撞力随井深和时间变化规律

    Figure  7.  The variation of impact force with well depth and time

    图  8  节点碰撞力随时间的变化规律

    Figure  8.  The variation of impact force with time of nodes

    图  9  杆柱节点横向位移仿真结果

    Figure  9.  Simulation results of rod nodes transversal displacement

    图  10  接箍节点横向位移仿真结果

    Figure  10.  Simulation results of coupling nodes transversal displacement

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出版历程
  • 收稿日期:  2021-06-28
  • 录用日期:  2021-11-05
  • 修回日期:  2021-10-28
  • 网络出版日期:  2021-11-05
  • 刊出日期:  2022-11-01

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