铰接式柔性钻具接触非线性耦合振动行为分析  

Study on Contact Nonlinear Coupling Vibration Characteristics of Articulated Flexible Drilling Tools

作　　者：罗敏[1] 莫亚虎 李巧珍[1] 徐亭亭[1] 林志强 LUO Min;MO Ya-hu;LI Qiao-zhen;XU Ting-ting;LIN Zhi-qiang(School of Mechanical Science and Engineering,Northeast Petroleum University)

机构地区：[1]东北石油大学机械科学与工程学院

出　　处：《化工机械》2024年第6期924-931,共8页Chemical Engineering & Machinery

基　　金：国家自然科学基金(批准号:51674088)资助的课题;东北石油大学人才引进科研启动经费(批准号:2019-KQ23)资助的课题;东北石油大学“国家基金”培育基金(批准号:2022GPL-11)资助的课题;大庆市指导性科技计划(批准号:zd-2023-33)资助的课题。

摘　　要：考虑柔性钻杆与导向筛管接触非线性以及井底岩石对钻头作用力的影响,建立了造斜段铰接式柔性钻具接触非线性耦合振动力学及有限元模型。采用模态分析法求出铰达到转动极限时外梁内可控铰接梁的前3阶固有频率,与解析解对比,最大误差仅为0.18%,验证了有限元模型和模态分析法的可行性。通过对铰接式柔性钻具进行耦合振动模态分析,得到了铰接式柔性钻具耦合振动模态频率及振型,并进行了动力响应分析。结果表明:正常钻进时柔性钻具不易引起共振;柔性钻杆容易发生横扭耦合振动,且越靠近钻头,横向振动越剧烈。Considering the nonlinear contact between the flexible drill pipe and the guiding screen tube and the effect of rock on the bit,both vibration mechanics and finite element model of the articulated flexible drilling tool were established.In order to verify the feasibility of the finite element model and modal analysis method,adopting the modal analysis method to determine the first three natural frequencies of the external and internal controllable hinged beams was implemented when the hinge reached the rotation limit.Comparing it with the analytical solution shows that,the maximum error is 0.18%only,this verifies the feasibility of both finite element models and modal analysis method.In addition,through the coupled vibration mode analysis of the articulated flexible drilling tool,the coupled vibration mode frequency and vibration mode of the articulated flexible drilling tool were obtained and their dynamic response was analyzed.The results show that,during the normal drilling operation,the flexible drilling tool doesn’t cause resonance easily,but transverse and torsional coupling vibration may occur to the flexible drill pipe,and the transverse vibration closer to the drill bit becomes more severely.

关 键 词：柔性钻具 接触非线性 模态分析法 固有频率 耦合振动 

分 类 号：TE921[石油与天然气工程—石油机械设备]