理化检验-物理分册Issue(3)：192-196,5.DOI:10.11973/lhjy-wl201603012
某油管短节断裂原因分析
Causes Analysis on Fracture of the Tubing Joint
摘要
Abstract
During the process of pulling the oil pipes in one well,it was found that the tubing joint (ϕ88.90 mm×6.45 mm)in lower end of tubing hanger had fractured.The fracture reasons of the tubing joint were analyzed by means of macrographic examination, chemical composition analysis, mechanical property test, microstructure analysis,macro and micro fracture analysis.The results show that the fracture type of the tubing joint was overload fracture.The fracture reason was that the designed tensile margin of external thread of the tubing joint was relatively low.Meanwhile,the eccentricity existed in the thread processing of the tubing joint,leading to a certain decline of the bearing capacity of the tubing joint.关键词
油管短节/过载断裂/拉伸余量/偏心Key words
tubing joint/overload fracture/tensile margin/eccentricity分类
矿业与冶金引用本文复制引用
寇菊荣,高文平,王温栋..某油管短节断裂原因分析[J].理化检验-物理分册,2016,(3):192-196,5.基金项目
国家自然科学基金资助项目(51271146) （51271146）
