本文選題：滾子修形 + 修形理論改進　； 參考：《中國地質大學(北京)》2015年碩士論文

【摘要】：近幾十年我國油氣勘探開發(fā)事業(yè)蓬勃發(fā)展,油氣井大量開采,同時各種復雜井況也相繼出現。固井是油氣井開采過程中一個十分重要的環(huán)節(jié),固井質量的好壞,直接影響著這口井能否順利進行生產。目前國內外廣泛采用旋轉尾管固井工藝,但旋轉尾管固井工具中的懸掛器軸承卻是易損部件,目前使用的軸承壽命低于20h,嚴重影響著固井效率和固井質量。導致這種情況主要原因之一是固井時超重負載使懸掛軸承滾子產生了嚴重的邊緣效應,進而使?jié)L子過早破碎、軸承失效。針對此問題,本文采用滾子修形的方案對滾子的受力效果進行改善,進而提高軸承和整個旋轉尾管懸掛器的使用壽命。具體的工作內容和結論如下:1對懸掛器軸承滾子在受載荷時破碎失效機理進行了分析,過高的“邊緣效應”是失效的主要原因,可以通過滾子修形的方法加以改善。2改進了經典滾子修形理論:提出了圓柱滾子修形理論應用在本文圓錐滾子修形的轉換方法;確定了截交、切交、全凸母線修形的最佳凸度求解方案、提高了修形效率和準確率;結合圓錐滾子的幾何特征,對經典Lundberg對數曲線進行改進,使其成為了連續(xù)的修形曲線。4利用改進母線修形理論對懸掛器軸承進行修形建模,并利用有限元法對改進后的滾子進行了分析比較,最佳修形母線是改進對數母線,其最大接觸應力相對于修形前降低了33.71%,最大等效應力降低了48.73%。4提出采用樣本插值擬合法對深穴修形滾子進行結構參數優(yōu)化,確定了懸掛器軸承滾子的最佳修形空心度和修形深度,得到了符合本文工況的最優(yōu)修形方案,最大接觸應力降低了27.80%,最大等效應力降低了37.00%。并將其與改進對數母線修形方案做了綜合評價,企業(yè)可結合實際選用優(yōu)化方案。5通過Solidworks二次開發(fā)實現了基于改進修形理論的參數驅動滾子自動建模功能,編制了友好的人機界面,簡化了計算,提高建模效率,方便后續(xù)使用。通過本文對旋轉尾管懸掛器軸承滾子修形理論的研究,改進了滾子受力效果,在一定程度上提高了軸承的使用壽命,進而提高了旋轉尾管懸掛器的使用性能。
[Abstract]:In recent decades, the exploration and development of oil and gas in China has developed vigorously, and a large number of oil and gas wells have been exploited, at the same time, a variety of complex well conditions have emerged.Cementing is a very important link in the process of oil and gas production. The quality of cementing directly affects the smooth production of this well.At present, the rotary tailpipe cementing technology is widely used at home and abroad, but the suspension bearing in the rotary tailpipe cementing tool is a vulnerable component. At present, the life of the bearings used is less than 20 h, which seriously affects the cementing efficiency and cementing quality.One of the main reasons for this is that the overloaded load during cementing causes a serious edge effect on the suspended bearing roller, which causes the roller to break prematurely and the bearing to fail.In order to solve this problem, the force effect of roller is improved by the scheme of roller modification, and the service life of bearing and the whole rotary tail tube suspension is improved.The concrete work contents and conclusions are as follows: (1) the failure mechanism of the suspension bearing roller is analyzed when it is loaded, and the "edge effect" is the main reason for the failure.The classical roller modification theory can be improved by the method of roller modification. 2. The conversion method of cylindrical roller modification theory applied in this paper is put forward, and the intersecting and intersecting are determined.The method of solving the optimal convexity of full convex busbar improves the efficiency and accuracy of the modification, and improves the classical Lundberg logarithmic curve by combining the geometric characteristics of the cone roller.It has become a continuous modification curve .4 the improved busbar modification theory is used to model the suspension bearing and the improved roller is analyzed and compared by using the finite element method. The best modification bus is the improved logarithmic bus.The maximum contact stress is reduced by 33.71 and the maximum equivalent stress is reduced by 48.73.4 the method of sample interpolation fitting is proposed to optimize the structural parameters of the deep hole modified roller.The optimum modification degree and depth of suspension bearing roller are determined. The optimum modification scheme is obtained according to the working conditions of this paper. The maximum contact stress is reduced by 27.80 and the maximum equivalent stress is reduced by 37.00 parts.It is evaluated comprehensively with the modified logarithmic busbar modification scheme. The enterprise can select the optimized scheme 5 through Solidworks secondary development to realize the automatic modeling function of the parameter driven roller based on the improved modification theory.A friendly man-machine interface is developed, which simplifies calculation, improves modeling efficiency and facilitates subsequent use.Through the research on the theory of roller modification of the rotary tail tube suspension bearing, the force effect of the roller has been improved, the service life of the bearing has been improved to a certain extent, and the performance of the rotary tail tube suspension has been improved.
【學位授予單位】：中國地質大學(北京)
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE925.2

【參考文獻】

相關期刊論文 前10條

1 陳家慶 ,毛紅兵 ,張寶生;無預載荷空心圓柱滾子軸承的理論研究[J];軸承;2002年06期

2 張秀娟;魏延剛;;基于BP神經網絡和有限元分析的深穴圓柱滾子的優(yōu)化設計[J];軸承;2007年06期

3 張洪偉;陳家慶;張向東;;空心圓柱滾子軸承接觸力學數值仿真[J];軸承;2011年08期

4 魏敏;圓柱滾子工作表面廓型對其接觸疲勞壽命的影響[J];軸承;1996年05期

5 劉永;;用VB對SolidWorks進行二次開發(fā)的方法[J];湖北汽車工業(yè)學院學報;2009年02期

6 劉明群;李金生;;Solidworks中構建曲線的兩種方法[J];機電產品開發(fā)與創(chuàng)新;2007年06期

7 翁世席;王艷;李建輝;;圓錐滾子軸承凸度程序構建[J];哈爾濱軸承;2014年02期

8 吳柳根;滕照正;侯婷;唐明;;國內尾管固井完井技術現狀[J];石油礦場機械;2013年10期

9 馬林虎;尾管固井的幾點經驗[J];石油鉆采工藝;1990年01期

10 徐衛(wèi)波;;低速重載滾動軸承壽命計算方法的研究[J];浙江冶金;2006年03期

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