φ88.9mm×9.35mm G105钻杆内螺纹接头胀扣失效分析  

Failure Analysis on Tool Joint Expansion of φ88.9mm×9.35mm G105 Drill Pipe

作　　者：赵大伟[1] 赵国仙[1] 赵映辉[2] 薛艳[1] 

机构地区：[1]西安石油大学材料科学与工程学院,西安710065 [2]西安摩尔石油工程实验室,西安710065

出　　处：《石油矿场机械》2009年第6期56-60,共5页Oil Field Equipment

摘　　要：针对某油田钻井过程中所使用的φ88.9 mm×9.35 mm G105钻杆内螺纹接头胀大现象进行失效分析。结果表明:钻杆接头的各项性能指标均符合标准规定,失效的主要原因是上扣扭矩不足,钻杆接头在井下无节制旋紧,致使钻杆在井下的自上扣扭矩超过了钻杆接头的实际抗扭屈服强度。The φ88.9mm×9.35mm G105 drill pipe thread joints swell phenomenon used in drilling oil process were studied. The results showed that the performance of the drill pipe joints was in line with standard and the main reason was that the making up torque was inadequate. Drill pipe joints in underground unrestrained tightening-up caused the drill pipe joints to bear the excessive load more than their anti-torque yield strength.

关 键 词：钻杆 胀扣 内螺纹接头 预防措施 

分 类 号：TE921.2[石油与天然气工程—石油机械设备]