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针对华北油田使用G105钻杆经常发生本体刺穿的问题,分析了钻杆刺穿原因及对策,并介绍了DPI缓蚀剂室内实验及现场应用情况。该缓蚀剂对钻井液中CO_2、O_2的腐蚀具有很好的抑制作用。有效地控制了钻杆本体刺穿事故的发生。
In view of the problem of piercing the body by using G105 drill pipe in Huabei Oilfield, the causes and countermeasures of piercing of drill pipe are analyzed. The indoor experiment and field application of DPI corrosion inhibitor are introduced. The corrosion inhibitor on the drilling fluid CO_2, O_2 corrosion has a good inhibitory effect. Effective control of the drill rod piercing accident occurred.