欢迎来到天天文库
浏览记录
ID:36648502
大小:371.71 KB
页数:5页
时间:2019-05-13
《无隔水管泥浆回收钻井系统吸入模块密封胶芯非线性摩擦接触分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、2010年12月润滑与密封Dec.2010第35卷第12期LUBRICATIONENGINEERINGVo1.35No.12DOI:10.3969/j.issn.0254—0150.2010.12.012无隔水管泥浆回收钻井系统吸入模块密封胶芯非线性摩擦接触分析徐群陈国明周昌静殷志明(1.中国石油大学(华东)海洋油气装备与安全技术研究中心山东东营257061;2.中海油研究总院北京1003"Z7)摘要:建立无隔水管泥浆回收钻井系统密封胶芯及钻具二维轴对称有限元模型,使用非线性有限元方法计算密封胶芯与钻具间的接触压力大小,验证密封胶芯
2、在无隔水管泥浆回收钻井中的可行性。研究摩擦因数变化对接触压力的影响,分析密封胶芯Mises应力峰值和钻具与胶芯间的摩擦力分布规律。结果表明:摩擦因数与胶芯密封面和钻具间的接触压力成非线性关系,胶芯主密封段接触压力随摩擦因数增大而减小,而胶芯锥形密封段和凸鼻形密封段的接触压力随摩擦因数增大而增大;胶芯Mises应力随摩擦因数增大而变大,且胶芯与钻杆接头上端接触时Mises应力峰值最大,容易导致胶芯破坏;胶芯与钻具间的接触面积基本不随摩擦因数变化而变化,摩擦力随摩擦因数的增大近似成线性增加;胶芯与钻杆接头接触时,摩擦力较大且增长显著,说
3、明胶芯与接头接触时更容易发生磨损。关键词:密封胶芯;无隔水管泥浆回收钻井;接触压力;库伦摩擦中图分类号:TE951文献标识码:A文章编号:0254—0150(2010)12—053—5NonlinearFrictionalContactAnalysisofSealRubberinSuctionModuleofRiserlessMudRecoveryDrillingSystemXuOunChenGuomingZhouChangjingYinZhiming(1.CentreforOffshoreEngineeringandSafetyT
4、echnologyatChinaUniversityofPetroleum,DongyingShandong257061,China;2.CNOOCResearchInstitute,Beijing100027,China)Abstract:Two—dimensionalaxisymmetricfiniteelementmodelofsealrubberandpipewerecreatedforriserlessmuddrillingsystem.Basedonnonlinearfiniteelementanalysismethod
5、,thecontactpressurebetweensealrubberandpipewascalculatedandthefeasibilityofsealrubberappliedinriserlessmudrecoverydrillingsystemwasverified.TheinfluenceoffrictioncoeficientonthecontactpressurewasresearchedwhilethedistributionrulesoffrictionbetweensealrubberandpipeandMi
6、sesstresspeaksofsealrubberwereanalyzed.Theresultsshowthatfrictioncoeficientisinanonlinearrela-tionshipwiththecontactpressurebetweentherubbersealingsurfaceandthepipe,andthecontactpressureinthesealrub—ber,smainsealingsectiondecreaseswithfrictioncoeficientincreasing.while
7、thecontactpressureinsealrubbermscone.shapedsealingsectionandtheconvex-noseedsealingsectionincreaseswithfrictioncoeficientincreasing.Sealrubber’SMisesstressincreaseswiththefrictioncoeficientincreasing,andMisesstressgetsithighestpeakwhenthesealrubbercomesintocontactwitht
8、heupperendofdrillpipejoint,andthesealrubberiseasilyimpaired.Thecontactareabetweenthesealrubberandthedrillingtoolalmos
此文档下载收益归作者所有