钻铤扭转振动状态的动态仿真模拟  

Dynamic Simulation of the Torsional Vibration Condition of Drill Collar

作　　者：包福贵 高凯 宋华 王雷 

机构地区：[1]中石油天然气管道局第二工程公司 [2]中石化胜利石油工程有限公司钻井工艺研究院 [3]中石油工程设计有限公司华北分公司

出　　处：《石油机械》2013年第7期7-10,共4页China Petroleum Machinery

基　　金：国家科技重大专项"大型油气田及煤层气开发"(2008ZX05038-004)的部分研究内容

摘　　要：为了解钻铤在井下工作时的扭转振动机理,对其扭转振动状态进行了动态仿真。在分析钻铤的工作情况及主要的失效方式后,建立了钻铤扭转振动的数值模型,模拟其与井壁之间的碰撞,对其工作时的扭转振动进行动态模拟和有限元分析,明确其振动、碰撞机理,寻求钻铤转速、井壁与钻铤之间的间隙和钻铤扭转振动之间的关系。分析结果表明,钻铤转速一定时,井壁间隙越大,其位移、速度和加速度的变化范围越大;井壁与钻铤间隙一定时,转速越小,其位移、速度和加速度变化范围越大。To understand the torsional vibration mechanism of drill collar in downhole operation, the dynamic simulation of its torsional vibration condition was conducted. After analysis of the operating condition and the main failure mode, the numerical model of the drill collar torsional vibration was established. The collision between drill collar and well wall was simulated. The dynamic simulation and finite element analysis of the torsional vibration of drill collar in operation were carried out. The mechanism of vibration and collision was clarified. The relation be- tween drill collar rotation speed, clearance between well wall and drill collar, and drill collar torsional vibration was sought. The analysis shows that, when the drill collar velocity is fixed, the larger the wall clearance, the larger the variation scope of the displacement, velocity and acceleration. When the wall clearance is fixed, the smaller the rotation speed, the even larger the variation scope of the displacement, velocity and acceleration.

关 键 词：钻铤 扭转振动 动态模拟 有限元分析 振动机理 

分 类 号：TE921[石油与天然气工程—石油机械设备]