The casing section mill with the dip soldered pressure adjusting rod was used in 22 wells, and every window cutting operation were carried out once.

• 现场对比应用表明 ,原使用调质钢调压杆进行套管开窗作业 ,约有 2 7 8%25的井需重复作业 ,采用浸焊调压杆进行 2 2口井的开窗作业 ,均一次开窗成功 ,取得了良好的效益。