1991年12月23日,辽河油田锦州采油厂作业大队作业一队在锦34排292井下油管柱作业过程中发生滑扣,油管扣紧不上,也回转不出来。班长决定不用这根油管,在指挥上提油管时造成崩扣,形成“单吊环”。在此危险情况下,班长叫其他人躲开,由作业机手配合,自己抱着油管离开井 December 23, 1991, Liaohe Oilfield Jinzhou Production Plant Operations Brigade team in Jin 34 row 292 downhole tubing string occurs during the operation, tubing can not be fastened, it does not turn back. The squad leader decided not to use this pipe, which caused the collapse of the pipe when it was put on command, forming a “single lifting ring.” In this dangerous situation, the squad leader called other people to escape, by the operating hand with their own tubing leaving the well