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我队初时采用合金钻进,由于没有掌握其操作技术上的特点,以及粗制滥造,钻头镶焊磨制质量小佳,加之操作上不习惯,磨制钻头怕麻烦等,使之没有发挥合金钻进固有的忧越性,而被误认为效率不高,甚至在软岩层中也主张采用钻粒钻进,以致合金钻进的方法没有及早被推广使用.合金钻进效率高不高的问题,答案是钻进较软岩层肯定是高的.如我队507机使用合金钻进页岩小班效率6-7米,而使用铁砂钻进只有3-4米;503机用合金钻进8天进尺145米,平均日进尺16米;505机使用合金钻进,连续两天创造本队台日35米、台班15米的新纪录.每一个齿筒进程(0.3米)一般只需3-5分钟,最快时不到2分钟,最慢的也不到10分钟,正常情况下钻进页岩平均小时效率是2-3
Our team initially used alloy drilling, because they did not grasp the technical features of its operation, as well as the shoddy, drill small welding quality welding, combined with the operation is not used, grinding bit trouble, so that it did not play alloy drilling Inherent worry, and was mistaken for efficiency is not high, even in the soft rock layer also advocates the use of drilling, resulting alloy drilling method has not been promoted as early as possible. It is sure to be drilled into a soft rock layer is high, such as my team 507 machine alloy shale small class efficiency 6-7 meters, and the use of iron sand drilling only 3-4 meters; 503 machine with alloy drilling into 8 days 145 Meters, the average daily footage of 16 meters; 505 machines using alloy drilling, for two consecutive days to create our team station 35 meters, table 15 meters a new record of each denture cylinder process (0.3 meters) generally only 3-5 minutes , The fastest when less than 2 minutes, the slowest is less than 10 minutes, under normal circumstances, the average hourly rate of drilling shale is 2-3