论文部分内容阅读
建立了一种深井整体钻柱动力学瞬态随机过程分析模型,通过给定井口悬吊位移模型、井底动态位移边界条件和扭矩、弯矩的动态激励以及下部钻具随机横向碰反力的引入,较好地模拟了整体钻柱的动力学响应,编制了从井眼轨迹描绘、形成计算用数据文件、动力学计算到结果描绘分析的整套软件,计算了下部钻具各节点(包括钻头)6个自由度和上部钻具各节点2个自由度上的位移与角位移、速度与角速度、加速度与角加速度、碰反力与碰反力矩以及内力与内力矩,其中包括钻头处的钻压、侧向力、各种振动频率的动态变化与平均值
A dynamic transient stochastic process analysis model of deep well overall drill string was established. By means of given displacement model of wellhead, the dynamic displacement boundary conditions of well bottom and dynamic excitation of torque and moment, as well as the random lateral collision force The dynamic response of the whole drill string is well simulated. The complete set of software which draws the trajectory of the borehole, forms the calculation data file, and calculates the kinematics to the result is analyzed. The calculation results of each drill bit ) 6 degrees of freedom and displacement and angular displacement, velocity and angular velocity, acceleration and angular acceleration, reaction force and reaction torque, as well as internal and internal moments on 2 degrees of freedom at each node of the upper tool, including the drill at the drill bit Pressure, lateral force, the dynamic changes and the average of various vibration frequencies