This paper describes the surface test and field application of using explosive method to dispose PDC bit fishing accident.
介绍了大庆油田利用爆炸破碎后打捞的方法，处理PDC钻头落井事故的地面试验及现场施工情况。
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To facilitate the fishing or recovery operation, the backoff is usually accomplished by applying reverse torque and detonating an explosive charge inside a selected threaded connection.