针对进口定向钻进装备配套钻具在使用过程中出现的问题,结合我国煤矿具体地质赋存特点和定向钻进技术要求,通过对定向钻进配套钻具工作条件分析、材料优选、结构优化和性能检测,确定了中心通缆钻杆的螺纹结构和信号传递装置结构,研制成功了高强度73 mm中心通缆钻杆及其配套钻具,并制定了钻杆的性能检测标准。现场工业性试验期间,利用73 mm中心通缆钻杆实现了煤矿井下近水平定向钻进钻孔深度1 212 m,钻进过程中信号传递实时、高效、可靠,可满足煤矿井下随钻测量千米孔深定向钻进的使用要求。

According to the problems occurred in the operation process of the dilling tools matched with the imported directional dilling equipment, in combination with the certain geological deposition features of the coal mine in China and the directional drilling technical requirements, with the analysis on the working conditions f or the drilling tools matched with the directional dilling, the material optimized selection, structure optimization and the performances detection, the thread structure of t he cable central passing mode dilling pipe with large inner hole and the signal transmission device structure were set up. The high strength inner diameter 73 mm cable central passing mode drilling pipe and the matched drilling tools were successfully researched and developed.The standard of the drilling pipe detection was set up.Duri ng the industrial trial period, the inner diameter 73 mm cable central passing mode drilling pipe was applied to realize the 1 212 m depth borehole drilled with the horizo ntal directional drilling in underground mine.The real-time, high efficient and reliable signal transmission in the drilling process could fully meet the application requirem ents of the 1 000 m directional drilling with the drilling measuring system.

国家科技重大专项资助项目(2011ZX05041-001)；