A method is proposed to determine the bit footage when the drilling cost per meter reaches a minimum.
本文提出了一种按最低成本原则确定单只钻头进尺的实用方法。
Field tests also show that the self-resonating cavitation nozzle is highly effective in reducing bit wear, increasing drilling footage and drilling speed.
现场试验同样证实设计的自振空化射流喷嘴在保护钻头、减少钻头磨损及增加进尺、提高机械钻速方面有显著作用。
There is also a bit of footage from December Boys included.
从男孩包括的十二月起也有一点英尺。
There is also a bit of footage from December Boys included.
从男孩包括的十二月起也有一点英尺。
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