1) directionally drilled crossing
定向钻孔穿越
2) directional drilling crossing
定向钻穿越
1.
In pipeline directional drilling crossing of Ji-Ning branch line of West to East Gas Transportation Pipeline, the radiation crosslinked polyethylene heat shrinking strips are used in the field joints.
西气东输管道工程冀宁支线定向钻穿越,其补口采用辐射交联聚乙烯热收缩带,针对冬季施工气温低、补口带易出现皱褶的实际情况,根据施工经验,介绍了防止牺牲带起皱的施工控制要点。
2.
These technical innovations and construction practice provide new information for further application and development of the directional drilling crossing technique.
结合长岭—株洲成品油管道长沙湘江定向钻穿越工程实例,介绍了管道在湘江复杂地质条件下穿越的设计与施工,论述了穿越设计方案的优化选择、顶进钢套管穿越卵石层、导向孔在硬质花岗岩岩层内钻进与对接、双钻机两端同步扩孔工艺、海缆与管道同孔回拖施工及定向钻穿越泥浆工艺等的技术创新与实践,为定向钻穿越技术的应用和发展提供了新的实践资料。
3) directional drilling crossing method
定向钻穿越法
4) drilled crossing
钻孔穿越
5) non-open-cut directional drilling
非开挖定向钻穿越
1.
A mud purification and recovery device used for non-open-cut directional drilling;
非开挖定向钻穿越泥浆净化与回收装置的研制
6) horizontal directional drilling technologyo
水平定向钻穿越法
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