高温车载不压井修井机防喷检测系统研究

发布时间：2018-04-12 16:22

本文选题：带压作业 + 接箍检测　；参考：《沈阳工业大学》2015年硕士论文

【摘要】：针对稠油、超稠油油藏的开采，辽河油田进行了关于蒸汽驱高温不压井作业技术的研究。不压井作业需要对油井进行保压密封，其中环形防喷器以胶芯“抱紧”油管的方式密封油套管之间的环形空间，但是由于管柱与接箍的外径不同，当接箍上提到达防喷器的位置时如果接箍强行通过环形防喷器会对胶芯造成刮伤，从而缩短胶芯的使用寿命，甚至使环形防喷器丧失密封功能。对此本文设计采用两个环形防喷器通过交替打开与关闭的方式让过接箍，这样既保证胶芯不被损坏，又保证了井口的密封。于是，对油管接箍的检测成为不压井作业的关键环节。本文采用电磁感应原理实现了对油管接箍的检测，并以电流交流传感器、数据采集卡和上位机组成硬件系统，以VB为工具编制软件控制系统共同组建了接箍检测的自动控制系统。首先，，对接箍检测原理的理论进行了分析，确定了接箍检测方案的可靠性。其次，通过电磁场有限元分析软件对接箍检测装置进行仿真，获得了检测装置的各个物理参数对检测效果的影响规律，包括检测线圈所用骨架的高度、内径以及绕制检测线圈的铜线的线径、匝数。避免了因盲目绕制检测线圈造成的资源浪费。根据仿真结果并结合不压井作业的实际工况选择了恰当的参数，按照选定参数绕制检测线圈并进行了模拟试验，试验的数据表明有限元仿真结论是可信的、接箍检测方案可行。最后，详细论述了接箍检测的监测系统，采用交流电压传感器、数据采集卡、上位机组成信号检测与控制系统，数据采集卡采集传感器的模拟量输出信号，然后进行A/D转换后传送给上位机，通过分析采集信号的变化规律，本文采用算术平均滤波法和基于信号点之间斜率的信号处理方法，最大限度的排除了干扰因素对检测效果的影响，并使用Visual Basic语言结合研华ActiveDAQ Pro控件编制上位机应用程序，实现了对油管接箍的实时监测与自动控制。
[Abstract]:In view of the production of heavy oil and super heavy oil reservoir, Liaohe Oilfield has carried out research on steam drive technology of high temperature and non-killing well.It is necessary to seal the oil well by holding the pressure of the oil well, in which the annular blowout preventer seals the annular space between the oil casing by the way of the rubber core "clasp" tubing, but the diameter of the pipe string is different from that of the hoop.When the hoop is lifted up to the position of the BOP, if the coupling is forced through the ring BOP, it will cause scrape to the rubber core, thus shorten the service life of the rubber core, and even make the ring BOP lose the sealing function.In this paper, two annular blowout preventers are designed to make the hoop through alternate opening and closing, which not only ensures that the rubber core is not damaged, but also ensures the sealing of the wellhead.Therefore, the detection of tubing hoop becomes the key link of no-well-killing operation.In this paper, the principle of electromagnetic induction is used to realize the detection of tubing hoop, and the hardware system is composed of current AC sensor, data acquisition card and upper computer.An automatic control system for hoop detection is established by using VB as a tool to compile the software control system.Firstly, the theory of the coupling detection principle is analyzed, and the reliability of the joint detection scheme is determined.Secondly, through the simulation of the testing device with the finite element analysis software of electromagnetic field, the influence of the physical parameters of the detecting device on the detection effect is obtained, including the height of the skeleton used in the detection coil.Inner diameter and the number of turns of copper wire winding the test coil.The waste of resources caused by blind winding detection coil is avoided.According to the simulation results and combined with the actual working conditions of the non-well killing operation, the appropriate parameters are selected, and the test coil is wound according to the selected parameters and the simulation experiment is carried out. The experimental data show that the finite element simulation results are credible and the hoop detection scheme is feasible.Then it is transmitted to the host computer after A- / D conversion. By analyzing the changing rule of the collected signal, the arithmetic average filter method and the signal processing method based on the slope between the signal points are adopted in this paper.The influence of interference factors on the detection effect is eliminated to the maximum extent, and the upper computer application program is programmed by Visual Basic language combined with ActiveDAQ Pro control, which realizes the real-time monitoring and automatic control of tubing coupling.
【学位授予单位】：沈阳工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE935

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