1) pre-drilling
钻前
1.
A new method predicting pre-drilling risk in lost circulation formation;
一种井漏层位钻前风险预测新方法
2) prediction before drilling
钻前预测
1.
Borehole stability prediction before drilling for formations under the second section in an exploration well;
探井二开以下地层井壁稳定性钻前预测方法
3) advance drilling
超前钻
1.
The programe of setting of steel casings with the mature and effective methods of advance drilling and throwing fills in the clay and the slabstone and the cement is taken.
50 m大直径钻孔灌注桩,由于存在深水、基岩倾斜、岩溶等因素,导致了复杂的成孔工艺,采用"钢护筒跟进"方案结合超前钻、抛填粘土、片石、水泥等较成熟且有效的方法进行施工,根据处理溶洞漏浆、塌孔、卡锤和埋锤的经验,总结了深水岩溶桩基的施工技术。
4) optimization before drilling
钻前优化
5) Pre-and Post-acetabular gland
前/后钻腺
补充资料：冻土钻(见取土钻)
冻土钻(见取土钻)
dongtuzuan冻土钻见取土钻
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