深井鉆探旋轉(zhuǎn)尾管懸掛器軸承密封性能研究
發(fā)布時(shí)間：2018-12-30 14:54
【摘要】：在超深井、復(fù)雜井鉆探過程中,旋轉(zhuǎn)尾管固井可以提高固井質(zhì)量,節(jié)約大量成本,保護(hù)油氣層和自然環(huán)境,因此該工藝得到了廣泛應(yīng)用。旋轉(zhuǎn)尾管懸掛器軸承需要在井下高溫、高壓、泥漿中工作,工況條件十分惡劣,如果軸承密封不嚴(yán),泥漿及其它雜物進(jìn)入軸承會加速其磨損。軸承作為重要部件其密封性能的好壞將對旋轉(zhuǎn)尾管懸掛器的順利使用產(chǎn)生直接影響。為此,本文對旋轉(zhuǎn)尾管懸掛器軸承的密封結(jié)構(gòu)設(shè)計(jì)及性能進(jìn)行了分析與研究。論文首先基于旋轉(zhuǎn)尾管懸掛器軸承密封的設(shè)計(jì)條件,提出了軸承的密封結(jié)構(gòu)、材料選擇、安裝方式等方案。軸承密封結(jié)構(gòu)中唇形橡膠密封圈的材料性質(zhì)為超彈性體,結(jié)合超彈性體本構(gòu)非線性理論,分析中考慮了幾何非線性、材料非線性和接觸非線性。進(jìn)而確定了表征橡膠材料的參數(shù)模型,建立了二維軸對稱有限元分析模型,確立了接觸類型、邊界條件以及加載方式等。其次運(yùn)用大型非線性有限元軟件ABAQUS,研究了預(yù)緊狀態(tài)下,不同初始過盈量對軸承密封圈Von Mises應(yīng)力以及與擋圈接觸面間接觸應(yīng)力的影響;分析了工作壓力的變化對軸承密封圈應(yīng)力、應(yīng)變的影響。結(jié)果表明,不同狀態(tài)下,軸承密封圈與擋圈接觸面間的最大接觸應(yīng)力始終大于工作壓力,保證了旋轉(zhuǎn)尾管懸掛器軸承的密封性。然后采用順序耦合熱應(yīng)力方法,分析了溫度載荷、不同初始過盈量對軸承密封圈Von Mises應(yīng)力和接觸應(yīng)力的變化影響;結(jié)果表明,溫度變化并不影響軸承密封圈密封性能要求。最后分析了橡膠密封圈的主要失效形式及影響因素,將摩擦系數(shù)作為重點(diǎn)考慮因素進(jìn)行了分析。為提高旋轉(zhuǎn)尾管懸掛器軸承密封的使用壽命提供一定的參考。本文采用非線性有限元法對軸承唇形橡膠密封圈進(jìn)行了仿真分析,減少了實(shí)驗(yàn)成本、縮短研發(fā)周期,為旋轉(zhuǎn)尾管懸掛器軸承密封結(jié)構(gòu)的設(shè)計(jì)優(yōu)化以及密封性能研究奠定了基礎(chǔ)。
[Abstract]:In the drilling process of ultra-deep and complex wells, the rotary tail tube consolidation well can improve cementing quality, save a lot of cost, protect oil and gas reservoir and natural environment, so this technology has been widely used. The rotary tail tube suspension bearing needs to work in the underground high temperature, high pressure and mud, the working condition is very bad, if the bearing seal is not strict, the mud and other sundries entering the bearing will accelerate its wear and tear. As an important component, the sealing performance of bearings will have a direct impact on the smooth use of rotary tail tube suspenders. In this paper, the seal structure design and performance of rotary tail-tube suspension bearings are analyzed and studied. Firstly, based on the design conditions of the bearing seal of the rotary tail tube suspension, the sealing structure, material selection and installation method of the bearing are put forward. The material properties of the lip rubber seal ring in the seal structure of bearing are super elastomer. Combined with the constitutive nonlinear theory of super elastomer, geometric nonlinearity, material nonlinearity and contact nonlinearity are considered in the analysis. Then the parameter model of rubber material was determined, the two-dimensional axisymmetric finite element analysis model was established, and the contact type, boundary condition and loading mode were established. Secondly, the influence of different initial interference on the Von Mises stress of bearing seal ring and the contact stress between the contact surface of bearing seal ring and the ring is studied by using the large-scale nonlinear finite element software ABAQUS,. The influence of the working pressure on the stress and strain of the bearing seal ring is analyzed. The results show that the maximum contact stress between the bearing seal ring and the baffle contact surface is always greater than the working pressure in different states, which ensures the sealing performance of the rotary tail tube suspension bearing. Then, the influence of temperature load and initial interference on the Von Mises stress and contact stress of bearing seal ring is analyzed by using sequential coupled thermal stress method, and the results show that the temperature change does not affect the sealing performance of bearing seal ring. Finally, the main failure forms and influencing factors of rubber sealing ring are analyzed, and the friction coefficient is considered as the key factor. It provides a certain reference for improving the service life of the bearing seal of the rotary tail tube suspension. In this paper, the nonlinear finite element method is used to simulate and analyze the bearing lip rubber seal ring, which reduces the experimental cost and shortens the research and development period. It lays a foundation for the design optimization of the bearing seal structure and the study of the sealing performance of the rotary tail tube suspension bearing.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE927
本文編號：2395730
[Abstract]:In the drilling process of ultra-deep and complex wells, the rotary tail tube consolidation well can improve cementing quality, save a lot of cost, protect oil and gas reservoir and natural environment, so this technology has been widely used. The rotary tail tube suspension bearing needs to work in the underground high temperature, high pressure and mud, the working condition is very bad, if the bearing seal is not strict, the mud and other sundries entering the bearing will accelerate its wear and tear. As an important component, the sealing performance of bearings will have a direct impact on the smooth use of rotary tail tube suspenders. In this paper, the seal structure design and performance of rotary tail-tube suspension bearings are analyzed and studied. Firstly, based on the design conditions of the bearing seal of the rotary tail tube suspension, the sealing structure, material selection and installation method of the bearing are put forward. The material properties of the lip rubber seal ring in the seal structure of bearing are super elastomer. Combined with the constitutive nonlinear theory of super elastomer, geometric nonlinearity, material nonlinearity and contact nonlinearity are considered in the analysis. Then the parameter model of rubber material was determined, the two-dimensional axisymmetric finite element analysis model was established, and the contact type, boundary condition and loading mode were established. Secondly, the influence of different initial interference on the Von Mises stress of bearing seal ring and the contact stress between the contact surface of bearing seal ring and the ring is studied by using the large-scale nonlinear finite element software ABAQUS,. The influence of the working pressure on the stress and strain of the bearing seal ring is analyzed. The results show that the maximum contact stress between the bearing seal ring and the baffle contact surface is always greater than the working pressure in different states, which ensures the sealing performance of the rotary tail tube suspension bearing. Then, the influence of temperature load and initial interference on the Von Mises stress and contact stress of bearing seal ring is analyzed by using sequential coupled thermal stress method, and the results show that the temperature change does not affect the sealing performance of bearing seal ring. Finally, the main failure forms and influencing factors of rubber sealing ring are analyzed, and the friction coefficient is considered as the key factor. It provides a certain reference for improving the service life of the bearing seal of the rotary tail tube suspension. In this paper, the nonlinear finite element method is used to simulate and analyze the bearing lip rubber seal ring, which reduces the experimental cost and shortens the research and development period. It lays a foundation for the design optimization of the bearing seal structure and the study of the sealing performance of the rotary tail tube suspension bearing.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE927
【參考文獻(xiàn)】
相關(guān)期刊論文 前3條
1 盧黎明;O形密封圈的壓縮率對其密封性能的影響[J];華東交通大學(xué)學(xué)報(bào);2003年02期
2 穆志韜,邢耀國;密封結(jié)構(gòu)中超彈性接觸問題的有限元分析方法[J];航空計(jì)算技術(shù);2003年04期
3 解廷X;崔宏偉;;露井聯(lián)采條件下井工礦對露天礦邊坡影響的范圍[J];露天采礦技術(shù);2013年11期
，本文編號：2395730
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