大屯煤电公司地质勘探队王洪文同志,几年来研制和革新了处理钻孔内复杂事故的特效打捞工具,经实践证明,工艺技术比较先进,效果好。如“投球安全接手,当遇卡、埋、夹钻事故时,提、拉、顶无效,就可将粗径钻具以上的钻具反上来,不必动用反丝管子。“水压割管器”用于孔内割断>φ89mm的各种套管。“偏斜弹簧割管钻头”用于孔内发生丝锥断在钻 Comrade Wang Hongwen, a geological exploration team of Datun Coal & Electricity Company, has developed and renovated special effects salvage tools for handling complex accidents in drilling holes in recent years. The practice has proved that the technology is relatively advanced and the effect is good. Such as “throwing the ball to take over safely, when encountering cards, burying and drilling accidents, the lifting, pulling, top invalid, you can turn over the drilling tools of large diameter drill, do not have to use the reverse pipe.” Hydraulic pipe cutter “Various sleeves for hole cut-in> φ89mm.” Skewed spring tube drill "for tapping off in the hole