深水测试管柱冲击荷载下的动力学行为研究

发布时间：2018-02-25 01:12

本文关键词： 冲击荷载测试管柱隔水管串振动减振器优化设计　出处：《西南石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：海洋深水测试管柱系统是深水测试的重要设备之一,其安全问题直接关系到试油、采油过程的成功与否。在海洋深水测试过程中,管柱系统受到的冲击荷载主要来自于以下两个工况：射孔工况和隔水管脱开工况。两种工况产生的冲击荷载都会使管柱系统发生沿管柱轴线方向的振动,并对管柱系统上方仪器、设备等产生冲击。因此,为了确保在此冲击荷载作用下,管柱系统与海洋环境或测试仪器、设备等不产生共振及管柱系统、钻井平台的张拉设备、测试设备等不发生破坏,这就催生出很多管柱系统动力学行为研究方面的问题。如：新型减振器的设计、管柱系统在冲击荷载下的动力响应、管柱系统模型的建立等,亟待探讨和解决。本文针对射孔模式及脱开模式下深水测试管串的安全问题,采用微元法分别建立了考虑管柱自重、管柱实际长度、流体摩阻影响的射孔管柱-减振器动力学模型及考虑海洋环境影响的实际隔水管串纵向振动动力学模型,给出了相应的初始条件、边界条件以及模型的差分格式,编制了相应的计算程序,开发了相应的仿真软件；并以南海某实际测试管串的设计为例,分别开展了射孔冲击荷载作用下射孔管柱的动力学行为研究及脱开模式下隔水管串的动力学行为研究,这对提高井下管柱系统的安全性能具有重要的理论和实际意义。
[Abstract]:Marine deep-water test string system is one of the most important equipment in deep-water testing, and its safety is directly related to the success of oil testing and oil recovery. The impact loads on the string system are mainly from the following two working conditions: perforation and riser detaching. The shock loads generated under both conditions will cause the string system to vibrate along the axis of the string. Therefore, in order to ensure that under this impact load, the string system and the marine environment or test instruments, equipment and so on do not produce resonance and string system, the tension equipment of drilling platform, There are many problems in the study of the dynamic behavior of the string system, such as the design of the new damper, the dynamic response of the string system under impact load, the establishment of the string system model, etc. It needs to be discussed and solved urgently. Aiming at the safety problem of deep water test string in perforation mode and decoupling mode, the actual length of pipe string and self-weight of pipe string are established by means of micro-element method. The dynamic model of perforation string and shock absorber affected by fluid friction and the dynamic model of longitudinal vibration of actual riser string considering the influence of marine environment are given. The corresponding initial conditions, boundary conditions and the difference scheme of the model are given. The corresponding calculation program and simulation software are developed, and the design of a real test tube string in the South China Sea is taken as an example. The dynamic behavior of perforated string under perforation impact load and the dynamic behavior of riser string under detaching mode are studied respectively. It is of great theoretical and practical significance to improve the safety performance of downhole string system.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE953

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