董萌萌
DONG Mengmeng;

• 1:中煤科工集团西安研究院有限公司，陕西 西安 710077

摘要(Abstract)：

针对常规外平钻杆在施工大直径定向长钻孔易发生断裂、弯曲黏扣等问题，分析其失效原因，优选了钻杆材料，研制出φ73 mm高韧性高强度钻杆（High Toughness and High Strength Drilling Pipe，HHDP）。通过性能检测和现场试验：钻杆整体抗扭能力达到20 kN·m，抗弯能力达到2°/3 m，施工大直径定向长钻孔时，千米扩孔进尺钻具事故率约0.26次/km，约为其他同规格钻杆的18%。
According to the failure such as fracture, bending and thread gluing while drilling large diameter and directional long borehole using conventional drill rod, the paper designed a new drill rod named φ73 mm high toughness and high strength drilling pipe(HHDP) by analyzing the failure reason, optimizing joint structure and selecting materials. Performance testing and field testing results show that HHDP has antitorque capacity of 20 kN·m and flexural capacity of 2°/3 m, its accident rate is about 0.26 time/km while drilling large diameter and directional borehole, about 18% of the other drilling pipe under same drilling condition.

关键词(KeyWords)： 高韧性高强度钻杆;接头设计;大直径钻孔;定向长钻孔;寺河矿
HHDP;joint design;large diameter borehole;directional long borehole;Sihe coalmine

Abstract:

Keywords:

基金项目(Foundation): 中煤科工集团西安研究院有限公司技术创新基金项目（2013XAYCX014）

作者(Authors): 董萌萌
DONG Mengmeng;

DOI: 10.3969/j.issn.1001-1986.2017.02.027

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