1) drilling string broken off
钻具断落
2) drop off of bit
钻头断落
3) drill-string partial accident
钻具断裂
1.
But,recently,drill-string partial accidents occurred frequently,and the accidents had brought out more security problems and large amount economic losses.
但是在近年来的气体钻井实践中,钻具断裂愈发频繁,带来了巨大的经济损失和安全隐患。
4) drill tool breaking
断钻具
5) free fall
顿钻钻井法;顿钻钻具下击;自由下落
6) take a picture
照相;落井钻具顶部打模
补充资料：断落
1.截断而落下。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条