连续油管作业双向震击器结构研究与仿真分析

发布时间：2018-01-23 20:54

本文关键词： 连续油管震击器结构研究力学分析有限元仿真　出处：《西南石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：连续油管作业双向震击器是连续油管作业中常用的解卡工具,受连续油管作业环境的限制,其整体尺寸比常规震击器小,其关键部位结构的合理性直接影响震击器的使用寿命。连续油管作业双向震击器在现场使用过程中常出现冲击管断裂、扭矩传递机构花键齿过度磨损或齿面压溃以及阀体磨损导致的阻尼机构密封失效等问题,严重影响了震击器解卡效率。因此,本文对连续油管作业双向震击器的关键部件进行了结构研究与仿真分析,建立了一种仿真分析方法并提出合理的改进方案,旨在提高连续油管作业双向震击器解卡效率,延长工具使用寿命。本文具体研究内容如下:(1)对不同类型震击器的结构进行分析,结合连续油管工作环境的特点,确定本文研究对象;对震击器在平衡状态工况及震击工况下的工作受力进行分析;基于液压式震击器在各工况下的受力情况对其进行失效分析,并针对各种失效形式提出改进措施;(2)对扭矩传递机构关键部位进行性能仿真模拟,研究花键齿参数对扭矩传递机构承载能力的影响规律。建立不同齿数的花键副有限元模型,研究花键齿数对扭矩传递机构承载能力的影响规律。(3)建立震击器冲击部位结构有限元仿真模型,计算工具疲劳寿命,对冲击管与花键心轴几何过渡区及花键心轴与下接头几何过渡区提出改进方案,并通过有限元仿真验证后得到最优方案。(4)利用ISIGHT与ABAQUS结合的自动仿真流程对阻尼机构其进行仿真试验设计和区间线性优化,研究阀体与液缸配合面的最佳斜度。并通过理论计算-仿真验证-误差分析-近似模型-仿真验证的流程计算最佳过盈量取值范围。
[Abstract]:The continuous tubing two-way shock hammer is a commonly used tool for unblocking in the continuous tubing operation. Due to the restriction of the continuous tubing operation environment, its overall size is smaller than that of the conventional shock hammer. The rationality of the structure of the key position directly affects the service life of the vibrator. The fracture of the shock pipe is often found in the field operation of the continuous tubing two-way shock hammer. The excessive wear of spline teeth of torque transfer mechanism or tooth surface crushing and the sealing failure of damping mechanism caused by the wear of valve body have seriously affected the efficiency of releasing card of shock hammer. In this paper, the structural research and simulation analysis of the key components of the continuous tubing two-way shock hammer are carried out, a simulation analysis method is established and a reasonable improvement scheme is put forward. The purpose of this paper is to improve the efficiency of removing cards and prolong the service life of continuous tubing two-way hammer. The specific contents of this paper are as follows: 1) the structure of different types of vibrators is analyzed. According to the characteristics of continuous tubing working environment, the research object of this paper is determined. The working force of the vibrator under the equilibrium condition and the shock condition is analyzed. Based on the failure analysis of hydraulic shock hammer under various working conditions, the improvement measures are put forward for various failure forms. 2) simulating the key parts of torque transfer mechanism, studying the influence of spline tooth parameters on the load capacity of torque transfer mechanism, and establishing the finite element model of spline pair with different tooth number. The influence of spline tooth number on the bearing capacity of torque transfer mechanism is studied. (3) the finite element simulation model of the impact part of the shock hammer is established, and the fatigue life of the tool is calculated. An improved scheme is proposed for the geometric transition region between the impingement tube and the spline axis and the geometric transition region between the spline shaft and the lower joint. The optimal scheme is obtained by finite element simulation. (4) the damping mechanism is designed by simulation experiment and interval linear optimization using the automatic simulation flow of ISIGHT and ABAQUS. The optimum slope of the valve body and cylinder is studied, and the optimal interference range is calculated by theoretical calculation, simulation verification, error analysis, approximate model and simulation verification.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE937

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