摘要
140V钢级油层套管在进行全井筒试压时管体爆裂,采用宏观形貌分析、几何尺寸测量、力学试验、金相检测、扫描电镜及能谱分析等方法,分析了该套管管体爆裂原因。结果表明:该失效套管显微组织、几何尺寸、力学性能及抗内压强度等均符合标准要求,其管体爆裂模式为韧性断裂,爆裂的主要原因是管体内部压力超过了管体自身承压强度,导致发生过载断裂。
The 140 V steel grade production casing pipe bursted during the wellbore pressure test.The causes of the casing pipe burst were analyzed by macromorphology analysis,geometry measurement,mechanical test,metallographic examination,scanning electron microscopy and energy spectrum analysis and so on.The results show that the microstructure,geometric size,mechanical properties and internal pressure strength of the failed casing met the requirements of the standard.The burst mode of the pipe was ductile fracture.The main reason for the burst was that the internal pressure of the pipe exceeded its own pressure bearing capacity,resulting in the overload fracture.
作者
赵金兰
仝珂
李虹
郭军
刘剑雄
刘青
ZHAO Jinlan;TONG Ke;LI Hong;GUO Jun;LIU Jianxiong;LIU Qing(CNPC Tubular Goods Research Institute,Xi'an 710077,China;Safety,Environment,and Technology Supervision Research Institute of Petrochina Southwest Oil&.Gasfield Company,Chengdu 610096,China;PetroChina Southwest Oil and Gasfield Company,Chengdu 610017,China)
出处
《机械工程材料》
CAS
CSCD
北大核心
2022年第11期97-101,110,共6页
Materials For Mechanical Engineering
关键词
套管
塑性断裂
爆裂
失效分析
casing
plastic fracture
burst
failure analysis
