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绳索取心钻进是广泛应用在矿产地质勘查中的一种方法,指在钻进过程中,当岩心充满岩心管后,不需提钻取岩心,而是以钻杆为通道,借助于绳索和专用打捞工具,把钻进过程中储存于内岩心管中的岩心提升到孔外的一种取心钻进方法。在矿产勘查的金刚石岩心钻进过程中,升降机具工序约占全部生产时间的30%～40%,使用绳索取心钻进工艺可以很大程度的增加纯钻进时间,提高钻进效率。本文结合临沂市沂南县矿产勘测工程钻孔实践,将小口径绳索取心钻进工艺与普通钻探工艺进行对比来阐明其先进、高效的特点。
Cord coring drilling is widely used in geological exploration of a method that refers to the drilling process, when the core is filled with core pipe, without drilling to take core, but to drill pipe as the channel, with the help of rope And special salvage tools, a kind of coring drilling method to lift the core stored in the inner core pipe outside the hole during drilling. During the drilling process of the diamond core of mineral exploration, the lifter process accounts for about 30% ~ 40% of the total production time. Using the rope coring drilling process can greatly increase the pure drilling time and improve the drilling efficiency. In this paper, Yinan County, Linyi City, mineral exploration project drilling practice, the small diameter wire coring drilling technology compared with the ordinary drilling process to clarify its advanced and efficient features.