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钻进硬及坚硬岩层是当前钻探生产上的三大关键之一。近来,各地正采取措施,大抓硬及坚硬岩层的钻进效率。这确实具有十分重大的意义:一方面,将能高速度地完成地质勘探任务;另一方面,还能及早地为国家提供建设所急需的金属和稀有金属等矿产资源。今年,硬及坚硬岩层占整个钻探工作量的40%左右,如果台月效率平均提高到250米以上的话,按四级中浅(孔
Drilling into hard and hard rock formations is one of the three key aspects of the current drilling production. Recently, various localities are taking measures to grasp the drilling efficiency of hard and hard rock formations. This is truly of great significance: on the one hand, the task of geological exploration will be completed at a high rate of speed; on the other hand, it will also be able to provide countries with much needed mineral resources such as metals and rare metals as soon as possible. This year, hard and hard rock layers account for about 40% of the total drilling workload. If the monthly efficiency is increased to more than 250 meters on average,