钻具脱落事故是最严重的和钻探工作中最常见的事故。在大多数情况下,这种事故是由于钻机人员违反操作规程以及没有检查钻具和提升机械疲劳度和微裂的仪器而引起的。钻进深井和超深井时钻杆柱受到140-190大气压的冲洗液的压力。利用180-200大 Drilling off accidents are the most serious and the most common accidents in drilling. In most cases, such accidents are caused by rig crew members who violate operating procedures and equipment that does not inspect the drill rig and elevate mechanical fatigue and microcracks. The drill string is subjected to a pressure of 140-190 atmospheres of flushing fluid when drilling deep and ultra-deep wells. Use 180-200 large