随着螺杆钻具的广泛使用,螺杆钻具失效时有发生。通过对近几年对螺杆钻具使用情况的跟踪、对失效情况的统计以及对失效螺杆的解剖分析得出了传动轴折断、旁通阀刺漏、定子脱胶、传动轴卡死、丝扣脱扣等几种常见失效形式,总结出了利用各种钻井参数的变化来判断螺杆在井下的工作状态,通过进一步推广判断和预防措施促进了螺杆钻具的正确使用,减少了螺杆钻具失效的发生,螺杆钻具的使用寿命逐年延长。 With the extensive use of screw drill, screw drill failure occurs from time to time. Through the tracking of screwdriver usage in recent years, the statistical analysis of the failure situation and the anatomical analysis of the failed screw have concluded that the drive shaft break, the bypass valve leakage, the stator degumming, the drive shaft stuck, the thread off Deduction and other common forms of failure, summed up the use of a variety of drilling parameters to determine the screw down in the working state, through the promotion of judgments and preventive measures to promote the correct use of screwdrivers to reduce the failure of screwdrivers Occurred, the life of screwdrivers extend year by year.