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连续的2(3/8)“钻柱能够使一部新的3000英尺钻机因为起下钻柱的速度可在100英尺/分左右并不为连接钻杆而停顿,故可减少起下钻时间。其它优点是:还有很好的移运性以及减少了对矿区准备工作的要求。
A continuous 2 (3/8) ”drill string enables a new 3000-ft drill to reduce drilling costs because the drill string can be pulled at a speed of about 100 ft / min without stopping the drill pipe The other advantages are: good transportability and reduced requirements for mine preparation.