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金刚石、硬质合金小口径钻进过程中，有时由于地层复杂，钻具过度疲劳磨损，或因操作规范不当等原因，往往发生钻具折断、脱扣、跑管和其他事故，必须及时打捞，以免增加事故复杂程度，影响施工进度，甚至导致钻具和钻孔报废。所以，矢锥是现场不可缺少的打捞工具。在“鞍钢宪法”光辉旗帜指引下，为了适应地质勘探小口径钻进发展的需要，张家口探矿机械厂、地质科学院勘探所和有关野外队“三结合”，设计研制了一套小口径矢锥。经过性能检验和在北京、贵州、河南等地初步试用反映，符合目前小口径钻进的需要，现已投入生产。
Diamond and cemented carbide small diameter drilling process, sometimes due to complex strata, over fatigue and wear drill, or due to improper operation norms and other reasons, often occur drill breakage, tripping, running and other accidents, must be promptly salvaged, So as not to increase the accident complexity, affect the construction progress, and even lead to drilling and drilling scrapped. Therefore, the pitch cone is indispensable on-site fishing tools. Under the guidance of the glorious banner of Anshan Iron and Steel Corporation, in order to meet the needs of the development of small-caliber drilling in geological exploration, a set of small-diameter pyramids was designed and developed based on the “triple combination” of the exploration institute of Zhangjiakou and the exploration institute of the Academy of Geological Sciences. After the performance test and in Beijing, Guizhou, Henan and other places a preliminary trial of reflection, in line with the needs of the current small diameter drilling, has now been put into production.