理化检验-物理分册2018，Vol.54Issue(6)：457-462,6.DOI:10.11973/lhjy-wl201806015
某油井油管短节断裂原因分析
Cause Analysis on Fracture of Tubing Joint in an Oil Well
张辉1
作者信息
- 1. 中海油能源发展股份有限公司 工程技术分公司,天津 300452
- 折叠
摘要
Abstract
Fracture failure of a tubing joint occurred in an oil well after production for 11 months.Through the macroscopic and microscopic morphology observation,microstructure analysis,mechanical property test and chemical composition analysis to the fractured tubing joint,the fracture reasons were found out.The results show that the fracture of the tubing joint was mainly caused by multi cracks stress corrosion cracking on the inner wall of the tubing joint under the production conditions of the oil well.Then under the interaction of corrosion and mechanical loads,the cracks continuously extended and connected with each other,and when the cracks penetrated the wall thickness of the tubing joint,they showed corrosion fatigue cracking,which eventually led to the fracture failure of the tubing joint.Improper processing technology of the tubing joint increased the probability of fracture failure.关键词
油管短节/断裂/应力腐蚀开裂/腐蚀疲劳开裂/失效分析Key words
tubing joint/fracture/stress corrosion cracking/corrosion fatigue cracking/failure analysis分类
能源科技引用本文复制引用
张辉..某油井油管短节断裂原因分析[J].理化检验-物理分册,2018,54(6):457-462,6.
