石油测井仪机械臂液压驱动系统可靠性设计及试验研究

发布时间：2018-05-19 01:41

本文选题：液压驱动系统 + 测井仪　；参考：《哈尔滨工业大学》2012年硕士论文

【摘要】：油田勘探和开采过程中，测井是识别和评价油气藏和解决一系列地质问题的重要手段。它能直接把所获得的信息和数据提供给石油地质和工程技术人员。测井过程中使用的测井仪器的性能的稳定是保证测井信息和数据正确性和有效性的前提条件。测井仪工作中需要贴靠井壁进行地层参数的测量，而机械臂的驱动系统是决定这类测井仪器性能稳定性的关键部件，同时也是制约测井深度的重要难点所在。由于国外对中国出售测井设备严格限制，国内现有的测井仪驱动设备深井下的耐高温高压能力差且功能单一，自主研发能够在深井下工作的高可靠性的测井仪驱动系统就显得尤为重要。本文首先针对处于高温、高压、震动冲击和泥浆的恶劣环境中工作的液压系统设计的耐环境、低泄漏、微型化的设计难点进行分析研究，并设计了带有压力平衡装置和碟簧补偿的闭式液压系统。使用AMESim仿真软件进行了液压系统仿真分析，证明了这种液压系统设计的可行性。然后，以可靠性设计思想为指导，，对液压驱动系统进行了可靠性预测、分析，得到了系统的薄弱环节，明确了设计重点，指导液压系统结构设计。对液压系统中的集成块组件、液压缸和平衡活塞等关键部件进行了结构设计，并分析了环境温度产生的热应力对系统结构的影响。最后，制定了研制早期阶段的可靠性试验方案，进行了环境应力试验和可靠性研制试验。以一种“设计-试验-改进-试验”的过程，逐步发现设计缺陷并对其改进，提高了系统可靠性。地面模拟加载试验证明了试验样机达到了试验阶段的技术指标和可靠性要求，为下一步的井下试验打下基础。
[Abstract]:Well logging is an important means to identify and evaluate oil and gas reservoirs and to solve a series of geological problems in the process of oil field exploration and production. It provides information and data directly to petroleum geology and engineers. The stability of logging tools used in logging is a prerequisite to ensure the correctness and validity of logging information and data. In the work of logging tool, it is necessary to measure the formation parameters by sticking to the well wall, and the driving system of the manipulator is the key component to determine the performance stability of this kind of logging tool, and it is also an important difficulty to restrict the logging depth. Due to the strict restrictions on the sale of logging equipment in China abroad, the domestic logging tool drive equipment has poor resistance to high temperature and high pressure under deep wells and has a single function. It is very important to develop independently the high reliability driving system of logging tool which can work under the deep well. In this paper, first of all, the design difficulties of hydraulic system design, such as environmental resistance, low leakage and miniaturization, which work in harsh environments of high temperature, high pressure, vibration shock and mud, are analyzed and studied. A closed hydraulic system with pressure balancing device and disc spring compensation is designed. The AMESim simulation software is used to simulate and analyze the hydraulic system, and the feasibility of the hydraulic system design is proved. Then, under the guidance of reliability design idea, the reliability of hydraulic drive system is predicted and analyzed, the weak link of the system is obtained, the key points of design are defined, and the structure design of hydraulic system is guided. The key components of hydraulic system, such as integrated block assembly, hydraulic cylinder and balanced piston, are designed, and the influence of thermal stress caused by ambient temperature on the system structure is analyzed. Finally, the reliability test scheme in the early stage of development is established, and the environmental stress test and reliability development test are carried out. In the process of "design-experiment-improvement-test", the design defects are found and improved step by step, and the reliability of the system is improved. The surface simulated loading test proves that the test prototype meets the technical specifications and reliability requirements of the test stage, which lays the foundation for the next downhole test.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TE937;TH137

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