在处理井下事故时，目前多采用正扣钻杆或反扣钻杆从井中倒出事故钻杆或油管。采用正扣钻杆处理时，操作者应有良好的素养，而且持续时间很长。采用反扣钻杆时，处理效果较好，但须在钻杆的运输、拆装方面投入巨额资金，还需要反扣方钻杆和水龙头，要在井口创造安全的工作... In dealing with downhole accidents, the use of positive buck drill or reverse buck drill pipe from the accident pouring accident drill pipe or tubing. The use of buckle stem processing, the operator should have good quality, but for a long time. When using reverse drill pipe, the treatment effect is better, but must invest huge amount of money in the transport, disassembly of the drill pipe, but also need to reverse the side of the drill pipe and faucet, to create a safe work at the wellhead ...