大庆油田断裂油管失效分析  

Failure Analysis of Fractured Tubing in Daqing Oil Fields

作　　者：孟庆武[1,2] 徐景生[1,2] 王宙 李振钢[1,2] 庚秀梅 

机构地区：[1]大庆石油学院石油机械系 [2]大庆石油管理局油田设计院

出　　处：《大庆石油学院学报》1998年第1期85-86,共2页Journal of Daqing Petroleum Institute

基　　金：中国石油天然气总公司"九五"科技攻关项目

摘　　要：对大庆油田某断裂油管进行了失效分析，认为该油管断裂属于疲劳断裂失效。油管螺纹齿底的原始加工刀痕是造成裂纹萌生的主要原因，萌生的裂纹在油管承受的拉－拉脉动载菏作用下发生疲劳扩展，最后导致油管断裂失效。Through failure analysis of a fractured tubing in Daqing oil fields, we have concluded that it is a fatigue fracture of the tubing, and what led to the cracks in the bottom of the tubing threads is the original cutting marks. The cracks expended due to the load on the tubing and led to the fracture in the tubing.

关 键 词：失效分析 断裂 油管 油田 大庆油田 

分 类 号：TE931.207[石油与天然气工程—石油机械设备]