多因素影响下射孔段管柱振动力学分析  

Vibration mechanics analysis of a perforating string under the influence of multiple factors

作　　者：杨文武[1] 李浩 林勇 任四武 张智亮[1,4] 徐少俊 李富强 YANG Wenwu;LI Hao;LIN Yong;REN Siwu;ZHANG Zhiliang;XU Shaojun;LI Fuqiang(School of Mechanical and Electrical Engineering,Southwest Petroleum University,Chengdu 610500,China;Sichuan Baoshi Machinery Petroleum Drill Bit Co.,Ltd.,Chengdu 610052,China;Downhole Operation Company of CNPC Western Drilling Engineering Co.,Ltd.,Karamay 834000,China;School of Automation,Chengdu University of Information Technology,Chengdu 610200,China;Engineering Technology Research Institute of China Petroleum Western Drilling Engineering Co.,Ltd.,Urumqi 830011,China)

机构地区：[1]西南石油大学机电工程学院,成都610500 [2]四川宝石机械石油钻头有限责任公司,成都610052 [3]中国石油集团西部钻探工程有限公司井下作业公司,新疆克拉玛依834000 [4]成都信息工程大学自动化学院,成都610200 [5]中国石油集团西部钻探工程有限公司工程技术研究院,乌鲁木齐830011

出　　处：《振动与冲击》2024年第10期223-229,共7页Journal of Vibration and Shock

基　　金：国家重点基础研究发展计划项目(2012CB215004);国家科技重大专项课题(2011ZX05021-001);中国博士后科学基金资助项目(2019M663865)。

摘　　要：聚能射孔爆轰产生的冲击载荷作用于井下射孔段管柱系统,导致管柱发生屈曲断裂等事故。结合管柱自重、射孔液阻尼、地层围压和爆炸冲击载荷的影响,建立射孔冲击载荷下油管—射孔枪动力学模型,得到射孔段管柱纵向振动微分方程。应用有限元软件,对射孔段管柱进行显示动力学响应分析,并将模拟结果同理论数值解进行对比验证。结果显示,应力波由管柱底端向上传播,管柱等效应力和轴向位移均呈现周期性变化,且逐渐衰减。分析不同油管长度、外径、壁厚和单发装药量对管柱动态响应的影响。基于数值模拟结果,利用MATLAB软件进行多元非线性回归,拟合得到射孔段管柱应力峰值经验公式,并与现场试验数据进行对比,验证公式可靠性。As the impact load produced by the shaped charge perforating detonation acts on a downhole perforating string system,accidents may be caused such as tubing fracture and buckling.Considering the incorposated effects of self-weight,perforating fluid damping,stratigraphic confining pressure,and explosive impact load,a dynamic model for the tubing-perforating gun system under perforation impact load was established.The differential equation for the longitudinal vibration of the string in the perforation interval was derived.A finite element software was employed to conduct the dynamic response analysis in the perforated interval of the string.The simulated results were compared and validated against theoretical numerical solutions.The results reveal that stress waves propagate from the bottom of the string upward.Both the equivalent stress of the string and the axial displacement exhibit periodic changes and gradually attenuate.The effects of different tubing length,outer diameter,wall thickness,and single explosive quantity of the perforating gun on the dynamic response of the string were analysed.Based on the numerical simulation results,the empirical formula for the peak stress of the string in the perforated interval was fitted by multiple nonlinear regression using the MATLAB software.The results of the formula were then compared with the field test data to verify its reliability.

关 键 词：冲击载荷 射孔管柱 振动力学 动态响应 

分 类 号：TE932[石油与天然气工程—石油机械设备]