【摘要】：隨著石油井數(shù)量的增多,每年有不少的石油井面臨著維修和石油管道檢測的問題,需要將維修設(shè)備或者檢測儀器送達到指定的位置。現(xiàn)有階段井下儀器主要靠纜繩送進和連續(xù)油管送進,豎直井中主要靠纜繩送進,依靠儀器的自身重力將儀器下放到指定的位置,對于大位移井和水平井主要靠連續(xù)油管送進,依靠下放撓性管將儀器送達到指定的位置,但是這種方式需要的地面設(shè)施復(fù)雜,作業(yè)成本較高。本文在借鑒和吸收國內(nèi)外已有井下牽引器技術(shù)的情況下,通過不同形式方案的對比分析,提出一種柔性脹閘式井下牽引器的設(shè)計方案。該方案采用模塊化設(shè)計,分為扶正模塊、脹閘模塊、行走模塊。脹閘模塊采用柔性支臂的設(shè)計方案,柔性支臂能夠充分與井壁進行接觸,提供足夠大的脹緊力,同時也能較好的適應(yīng)井下復(fù)雜多變的環(huán)境。在此基礎(chǔ)之上,對井下牽引器進行功能原理分析和工作流程的闡述,詳細地設(shè)計井下牽引器實驗裝置的結(jié)構(gòu)和實驗裝置的液壓系統(tǒng)。使用SolidWorks軟件對井下牽引器進行三維實體建模并完成裝配。本文采用有限元分析的方法,運用SolidWorks里的Simulation對脹閘機構(gòu)柔性臂進行仿真,根據(jù)仿真實驗的結(jié)果,設(shè)計出較為合理的柔性臂尺寸。并對柔性臂的拉伸過程、脹緊過程和越障過程進行仿真,在Ansys軟件里對脹閘機構(gòu)柔性臂進行接觸應(yīng)力仿真。運用SolidWorks里的Simulation對扶正機構(gòu)柔性臂的工作過程進行仿真,并對柔性臂在遇到凸起和縮徑情況下越障能力仿真。使用Solidworks軟件對脹閘機構(gòu)和扶正機構(gòu)的柔性支臂進行疲勞性分析,驗證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.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE931.2

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本文編號：2144318