Current situation and development of bolt drilling equipment used in collieries
煤矿锚杆支护钻孔设备的现状及发展
This paper briefs the long borehole directional drilling technology, selection of typical equipment, process, measuring system and application in coalmines.
本文介绍深孔定向钻进技术的原理、典型的设备选择、工艺、测量系统以及该技术在煤矿工 程中的应用。
This paper introduces the oil price promotion to discover the ultra-depth water oil resources and development of the ultra-depth water drilling platform and ultra-depth drilling equipment, also introduces the main characteristics of the 5th and 6th generation drilling platform.
简述了全球油价变化对促进深水油藏发现及全球超深水钻井平台和超深井钻井设备的发展;第5、6代钻井平台(船)的主要特点;提出了对发展我国超深井钻井平台的建议。
Study on High Speed Drilling in Deep 38CrMoAl Steel Tube;
38CrMoAl料筒高速深孔钻进研究
Study on drill bit for large diameter core drilling of deep hole in hard rock
硬岩深孔大口径取芯钻进的钻头研究
Drilling 50 yards deep,
钻孔至50码深处，
CONSTRUCTION SCHEDULE ADVANCEMENT OF DRILLING PILE BY DEEP HOLE WATER PRESSURE BLASTING
采取深孔水压爆破提高钻孔桩施工进度
deepwater drilling
深水钻进、深海钻进
When drilling deep holes, the feed movement should be released from time to time.
在钻深孔的时候，有时必须放松进给运动。
and the search for oil has done more to improve deep drilling,
寻找石油对改进深孔钻探作的贡献很大，
guide twist drill
有导径的深孔麻花钻
Since the inception of this project in1998, three pre-pilot holes have been completed and the main hole has reached a depth of over3500 m.
从98年开始，已经完成3个预先导孔的钻探工作，主孔钻进深度已经超过3500米。
Determining the Maximum Depth Method for Complex Formation Pneumatic DTH Drilling with the Casing
复杂地层气动潜孔锤跟管钻进最大深度的确定方法
Application of Wireline Core Drilling in Coalfield Ultra Deep Boreholes
绳索取心钻进技术在煤田勘探超深孔施工中的应用
Design and Realization of the Monitoring System in Deep-Sea Drilling Machine
深海中深孔钻机监控系统设计与实现
A whiff of cigarette smoke struck his nostrils.
一缕香烟钻进他的鼻孔。
The Optimal Design About the Trajectory of Non dig Guided Boring
非开挖导向钻进钻孔轨迹的优化设计
Application of Bit Water Way in HDD
水平定向钻进扩孔钻头水口应用分析
The first choice is to dig our heads and oil drills deeper into the ground.
第1种选择就是用石油钻孔机钻至更深的地底。
Supporting the use of impact drilling electric drill. Drilling, hole spacing with hole depth should meet the design requirements.
（1）钻孔使用配套冲击电钻.钻孔时,孔洞间距与孔洞深度应满足设计要求.
high efficiency drilling system for small and deep hole
高效小直径深孔钻削系统