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川西南矿区某深井因纠斜划眼中钻具母扣胀大滑扣顿钻,经较长时间处理无效。为切除带公锥鱼头,矿区钻井科和科研所钻井工艺室共同设计了12 1/4″井眼用外割刀。它是一种由液压力控制进、退刀,既可切割井下钻杆,又能同时打捞被割部分
A deep well in the southwestern Sichuan Basin due to correction of oblique eye drill tooling buckle big buckle Dunhuang, after a long time to deal with invalid. In order to cut off the fish head with a cone, mine drilling section and scientific research institute drilling room jointly designed 12 1/4 "hole cutter .It is a kind of hydraulic pressure into the retraction knife, both cutting underground drilling Bar, while being salvaged by the cutting part