中深斜孔绳索取心高强耐磨钻杆的研究与应用

Study and Application of High Wear-resistance Drilling Rod for Wire-line Coring in Medium-deep Inclined Hole

针对中深斜孔钻进中Φ60 mm绳索取心钻杆机械强度低、耐磨性能差、钻杆拧卸难等问题,采用对绳索取心钻杆整体调质处理的方式,大幅提高了绳索取心钻杆的机械强度;对绳索取心钻杆表面高频淬火,提高了钻杆表面的硬度和耐磨性;采用重型绳索取心带切口接手,初步解决了绳索取心钻杆拧卸问题。采用上述钻杆在中深斜孔钻进中取得了较好的效果。

Disadvantages of φ60mm wire-line coring drilling rod in medium-deep inclined hole drilling include： low mechanical strength, poor wear-resistance and inconvenient drilling rod disassembling. Quenching and tempering treatment was adopted to wire-line coring drilling rod, the mechanical strength was greatly improved; high-frequency quenching was made to the surface of drilling rod, the hardness and wear-resistance were increased ; and the difficulty of disassembling for wire-line coring drilling rod was preliminary solved by heavy wire-line coring joint with mill groove.