1.
Design and Analysis on Finite Element of New Type DTH Hammer Drilling with Eccentric Simultaneous Casing
新型偏心跟管钻具的设计与有限元分析
2.
Theoretical Analysis and Experimental Research of Flow Field by DTH Hammer Drilling with Simultaneous Casing Tool of JSL-30 Drill Rig;
基于JSL-30型砾石钻机潜孔锤同心跟管钻具的流场理论分析及试验研究
3.
combined pipe tap and drill
管用钻孔攻丝复合刀具
4.
tools to tubing substitute
钻具连接油管的接头
5.
Pull out (or run in ) the string up to the shoe and hang it on the 5 inches pipe ram] .
起钻（或下钻）至套管鞋处，并把钻具悬挂在5”闸板防喷器上。
6.
Analysis and Optimization on Invalid Casing in Casing Drilling in Luanchuan Molybdenum Mine
栾川钼矿跟管钻进套管失效分析及优化设计
7.
work the pipe free
活动钻具或管柱使之解卡
8.
combined taper pipe tap and core drill
扩孔钻和锥管丝锥复合刀具
9.
Research on the Technology Issue of Down-the-hole Hammer Drilling with Casing for Complex Stratum
复杂地层潜孔锤跟管钻进工艺问题研究
10.
The generously designed drill rod clamping device can be opened up fully to enable the installation of drilling tools and drill casings exceeding 171/2" (444 mm) in diameter.
如图所示的钻杆夹持装置可安装最大直径为444毫米的钻具和套管.
11.
Study on the System of Object-oriented Drill Tools Management Based on ERP
基于ERP的面向对象钻井企业钻具管理信息系统研究
12.
Any of numerous hand tools for boring holes.
钻孔工具，手钻钻孔用的手持工具
13.
auger with valve
(钻浅井用) 带阀螺旋钻具
14.
A tool used for drilling.
钻头用于钻孔的工具
15.
Design of the Data Acquisition and Management System on the Downhole-motors Testing Table;
螺杆钻具实验台数据采集管理系统设计
16.
The Methods Research of Drill Stem Component Service Life Estimating and Management Program System Developing;
钻具疲劳寿命确定方法及其管理软件开发
17.
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
18.
Application of multi-casting drilling to engineering investigation of Gongzha landslides for Suwalong Hydropower Station
多级跟管钻进工艺在苏哇龙水电站贡扎滑坡体工程勘察中的应用