柔性胀闸式井下牵引器实验装置设计与仿真
发布时间：2018-07-25 15:57
【摘要】：随着石油井数量的增多,每年有不少的石油井面临着维修和石油管道检测的问题,需要将维修设备或者检测仪器送达到指定的位置。现有阶段井下仪器主要靠缆绳送进和连续油管送进,竖直井中主要靠缆绳送进,依靠仪器的自身重力将仪器下放到指定的位置,对于大位移井和水平井主要靠连续油管送进,依靠下放挠性管将仪器送达到指定的位置,但是这种方式需要的地面设施复杂,作业成本较高。本文在借鉴和吸收国内外已有井下牵引器技术的情况下,通过不同形式方案的对比分析,提出一种柔性胀闸式井下牵引器的设计方案。该方案采用模块化设计,分为扶正模块、胀闸模块、行走模块。胀闸模块采用柔性支臂的设计方案,柔性支臂能够充分与井壁进行接触,提供足够大的胀紧力,同时也能较好的适应井下复杂多变的环境。在此基础之上,对井下牵引器进行功能原理分析和工作流程的阐述,详细地设计井下牵引器实验装置的结构和实验装置的液压系统。使用SolidWorks软件对井下牵引器进行三维实体建模并完成装配。本文采用有限元分析的方法,运用SolidWorks里的Simulation对胀闸机构柔性臂进行仿真,根据仿真实验的结果,设计出较为合理的柔性臂尺寸。并对柔性臂的拉伸过程、胀紧过程和越障过程进行仿真,在Ansys软件里对胀闸机构柔性臂进行接触应力仿真。运用SolidWorks里的Simulation对扶正机构柔性臂的工作过程进行仿真,并对柔性臂在遇到凸起和缩径情况下越障能力仿真。使用Solidworks软件对胀闸机构和扶正机构的柔性支臂进行疲劳性分析,验证柔性支臂使用的可靠性。
[Abstract]:With the increase of the number of oil wells, many oil wells are faced with the problems of maintenance and pipeline inspection every year. In the present stage, the downhole instruments are mainly fed by cables and continuous tubing, the vertical wells are mainly fed by cables, and the instruments are lowered to a designated position by their own gravity. For extended reach wells and horizontal wells, they are mainly fed by continuous tubing. The instrument is delivered to the designated position by using the flexible tube, but the ground facilities are complicated and the operation cost is high in this way. Based on the reference and absorption of the existing downhole tractor technology at home and abroad and through the comparative analysis of different forms of schemes, this paper presents a design scheme of the flexible swell-type downhole tractor. This scheme adopts modular design, which is divided into leveling module, flatulence module and walking module. The expansion module adopts the design scheme of flexible support arm, which can fully contact the shaft wall, provide enough expansion and tight force, and adapt well to the complex and changeable environment. On this basis, the function principle and working flow of the downhole tractor are analyzed, and the structure of the experimental device and the hydraulic system of the experimental device are designed in detail. SolidWorks software is used to build 3D solid model and complete assembly of downhole tractor. In this paper, the finite element analysis method is used to simulate the flexible arm of the flatgate mechanism by using the Simulation in SolidWorks. According to the result of the simulation experiment, the reasonable size of the flexible arm is designed. The tensile process, expansion process and obstacle surmounting process of the flexible arm are simulated, and the contact stress of the flexible arm is simulated in Ansys software. The working process of the flexible arm of the centralizing mechanism is simulated by using the Simulation in SolidWorks, and the ability of the flexible arm to surmount obstacles is simulated under the circumstance of bumping and shrinking. The fatigue analysis of the flexible arm of the flatgate mechanism and the leveling mechanism is carried out with Solidworks software to verify the reliability of the flexible arm.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE931.2
本文编号：2144318
[Abstract]:With the increase of the number of oil wells, many oil wells are faced with the problems of maintenance and pipeline inspection every year. In the present stage, the downhole instruments are mainly fed by cables and continuous tubing, the vertical wells are mainly fed by cables, and the instruments are lowered to a designated position by their own gravity. For extended reach wells and horizontal wells, they are mainly fed by continuous tubing. The instrument is delivered to the designated position by using the flexible tube, but the ground facilities are complicated and the operation cost is high in this way. Based on the reference and absorption of the existing downhole tractor technology at home and abroad and through the comparative analysis of different forms of schemes, this paper presents a design scheme of the flexible swell-type downhole tractor. This scheme adopts modular design, which is divided into leveling module, flatulence module and walking module. The expansion module adopts the design scheme of flexible support arm, which can fully contact the shaft wall, provide enough expansion and tight force, and adapt well to the complex and changeable environment. On this basis, the function principle and working flow of the downhole tractor are analyzed, and the structure of the experimental device and the hydraulic system of the experimental device are designed in detail. SolidWorks software is used to build 3D solid model and complete assembly of downhole tractor. In this paper, the finite element analysis method is used to simulate the flexible arm of the flatgate mechanism by using the Simulation in SolidWorks. According to the result of the simulation experiment, the reasonable size of the flexible arm is designed. The tensile process, expansion process and obstacle surmounting process of the flexible arm are simulated, and the contact stress of the flexible arm is simulated in Ansys software. The working process of the flexible arm of the centralizing mechanism is simulated by using the Simulation in SolidWorks, and the ability of the flexible arm to surmount obstacles is simulated under the circumstance of bumping and shrinking. The fatigue analysis of the flexible arm of the flatgate mechanism and the leveling mechanism is carried out with Solidworks software to verify the reliability of the flexible arm.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE931.2
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，本文编号：2144318
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