井眼直径对膨胀波纹管膨胀性能的影响  

Influence of Hole Size on Expansion Performance of Expansion Bellows

作　　者：朱冰冰[1] 段庆全[1] 李虎[1] 张会会[1] 

机构地区：[1]中国石油大学机械与储运工程学院,北京102249

出　　处：《焊管》2017年第11期33-36,共4页Welded Pipe and Tube

基　　金：中国石油化工股份有限公司石油工程技术研究院研究项目"大尺寸膨胀波纹管力学特性分析"(项目编号10010099-15FW1907-0012)

摘　　要：为了保障膨胀波纹管在石油钻井中的应用,针对Φ215.9 mm波纹管现场试验过程中水力膨胀需求,采用有限元弹塑性分析的方法,建立波纹管膨胀模型,开展波纹管在直井中膨胀情况的仿真模拟。通过对所建模型的分析,对不同井眼直径可膨胀波纹管的波峰、波谷、长轴及不圆度随压力的变化关系进行研究,结果表明:随压力的增加,波纹管的不圆度逐渐减小,且井眼直径越大,不圆度越小;随井眼直径的增加,波峰、波谷、长轴的直径均增大。In order to ensure the application of expansion bellows in petroleum drilling, aiming at hydraulic expansion demand of Ф 215.9 mm bellows in field tests, bellows simulation in vertical well was established by elastopIastic finite element analysis. By modeling analysis , changes with pressure of wave crest, wave trough, macroaxis and out-of-roundness in different hole size were researched. The results showed that the out-of-roundness decreased with the increase of pressure and hole size, and diameters of wave crest, wave trough and macroaxis increased with the increase of hole size.

关 键 词：波纹管 膨胀 井眼直径 有限元分析 

分 类 号：TE928[石油与天然气工程—石油机械设备]