论文部分内容阅读
一多头井故类型与发生原因1.升降钻具跑管挤夹,由于蘑菇头、钻杆丝扣磨损、松动或在升降钻具时没扭紧,造成脱扣跑管,或处理钻杆折断事故,提钻到最后几根,用转盘扭叉卸钻杆,开车过猛,而提引器未关上,垫叉坐跳起,造成钻杆和蘑菇头一齐跑下井内.2.钻进中钻杆折断或丝扣不好而滑扣,没察觉到,关车不及时,上部钻杆继续回转无阻力,使部分甩脱,甚至从机上钻杆全部甩脱下去.
A long head of the accident and the type of reason 1. Drilling and running pipe clamp squeeze, due to the mushroom head, drill threaded wear, loose or lifting the tool did not tighten, resulting in tripping pipe, or processing drill pipe Broke the accident, the last few to mention the last drill, with the turntable twist fork unloading drill pipe, driving too fast, and the indexer is not closed, pad fork to sit up, resulting in the drill pipe and mushroom head together run down the well. In the drill pipe broken or threaded buckle is not good, did not notice, turn off the car in time, the upper part of the drill pipe continued to rotate without resistance, so that part of the rejection, or even from the machine off all the drill pipe.