1.
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
2.
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
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.
Diamond core drilling equipment conventional system
GB/T16950-1997金刚石岩心钻探钻具设备
6.
Diamond core drilling equipment--Wire line system
GB/T16951-1997金刚石绳索取心钻探钻具设备
7.
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。
8.
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
9.
A shaft on which a working tool is mounted, as in a dental drill.
心轴用于安装工具的蕊棒，如牙钻蕊棒
10.
Development of core drill equipment for combined underwater drill rammer of rock built-in pile hole
嵌岩桩孔组合潜孔锤取心钻具的研制
11.
Mechanical Analysis and Design of Coring BHA in Long Horizontal Segment
水平段大段取心钻具力学分析与设计
12.
work the pipe free
活动钻具或管柱使之解卡
13.
combined taper pipe tap and core drill
扩孔钻和锥管丝锥复合刀具
14.
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
15.
adjustable jaws center workpiece in a lathe or center tool in a drill.
在车床或钻孔机中心工具内的可调整中心工件。
16.
Bottom-Hole Dynamic Coring Assembly Analysis Using the Finite Element Method and Deviation Control Research of Chinese Continental Scientific Drilling No.1 Well;
科钻一井井下动力取心钻具组合有限元分析与井斜控制研究
17.
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.
18.
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