钻铤窄间隙熔化极脉冲气体保护自动焊工艺  

Drill collar narrow gap consumable electrode impuise automatic gas-shielded welding

作　　者：韩天英[1] 沈伯卿[1] 胡记生[1] 李玉民[1] 张琦[1] 王进军[1] 王金志[1] 苏振峰[2] 

机构地区：[1]中原石油勘探局钻井管具工程处 [2]中原石油勘探局钻井二公司

出　　处：《石油机械》2004年第8期22-24,84,共3页China Petroleum Machinery

摘　　要：为了修复因长度短于 8m而报废的石油钻井用钻铤 ,研究开发了钻铤窄间隙熔化极脉冲气体保护自动焊工艺。研究中针对钻铤这种小直径厚壁管的特点研制了焊接控制设备、专用焊枪 ,设计焊接坡口 ,精选保护气体 ,确定焊接工艺 ,优选焊接工艺参数。室内试验和现场应用表明 ,采用该工艺焊接钻铤焊区的综合力学性能得到了较大改善 ,其中部分性能指标达到了摩擦焊钻杆的技术要求 ,焊接的钻铤可在井深 370 0m以内、井斜In order to repair the drill collar abandened owing to being shorter than 8 m,a narrow gas consumable electrode impulse automatic gas-shielded welding technology is developed.According to the characteristics of drill collars,welding control device and special welding gun are designed,welding groove and shielding gas and welding technology ale determined,and welding technological parameters are optimized.Indoor test and field use show that,the weld zone has good mechanical properties,some of which reach the indexes of friction weld.The drill collar welded by this technology can be used in holes nOt deeper than 3 700m with a deviation angle of smaller than 30°

关 键 词：焊工 自动焊 钻铤 气体保护 焊接控制 焊枪 摩擦焊 石油钻井 现场应用 井斜 

分 类 号：TE921.2[石油与天然气工程—石油机械设备] TE28