During the process of trenchless construction,it is often inconvenient due to the bit water way matching the pump output inappropriate.
在实际非开挖施工过程中,由于扩孔钻头水眼大小与泵量不能够很好地匹配,给正常施工带来很大的不便。
Application of reaming while drilling tools in Shengli Oilfield;
胜利油田随钻扩眼工具及其应用
Aiming at safe and high effective borehole enlargement issue of deep well,ultra-deep well and high pressure oil/gas well in drilling operation,actual force behaviors of drilling string assembly reaming while drilling in downhole are researched,by using tri-axial finite element approach twisting vibration of reaming drill string while drilling is simulated.
针对深井、超深井、高压油气井等钻井作业中安全高效的扩眼问题,研究随钻扩眼钻具组合在井下的实际受力情况,对随钻扩眼钻进钻柱扭转振动进行了三维有限元模拟,提出了研究扩眼器的质量偏心、钻机顶部支撑等因素对扭转振动作用的力学分析模型,并讨论了随钻扩眼钻具组合的扭转振动频率和动力学强度等力学问题。
Calculating Method and Effect on ROP of Ratio for WOB of RWD Tools
随钻扩眼工具钻压分配比的计算方法及对钻速的影响
Study on Structure of Reaming While Drilling Tools and Design of Suitable Bottom-Hole Assembly;
随钻扩眼工具结构及与之相匹配的钻具组合设计方法研究
three point neat-bit reamer
三点式近钻头扩眼器
dazzling sunlight [diamonds]
耀眼的阳光 [钻石]
counterbore with guide
有导柱的平底扩充孔钻
To form, shape, taper, or enlarge(a hole) with or as if with a reamer.
扩，整用扩孔钻或仿佛是用扩张钻去造出、成形出、整出或扩大（某个孔）
The Extend Function of Z3040 Radial Drilling Machine--the Drilling-Milling Body
Z3040型摇臂钻床扩展功能——钻铣机构
Application of Bit Water Way in HDD
水平定向钻进扩孔钻头水口应用分析
multisensor MWD system
多传感器随钻测量系统
surface hole drilling
钻下表层套管的井眼
strip-borer drill
露天矿水平炮眼钻机
The hole is drilled, the charge is set up.
孔眼钻好了，炸药安上了。
An awl with a beveled tip, used to make holes in wood for brads or screws.
锥钻，打眼钉钻头倾斜的钻子，用于在木头上钻孔以钉角钉或螺钉
A tapered, serrated tool used to shape or enlarge a hole.
手钻用来钻孔，或扩大孔的尖细带齿的工具
Please pick up the 171/2" bit and 36" hole opener to the floor.
请将这个171/2"钻头和36"扩大器吊上钻台。
Design and Improvement of Back Reamer in Directional Drilling Non-excavation Pipe Laying Construction
导向钻进非开挖铺管施工扩回钻头的设计改进
Vibration Signal Applied to Analyze Reaming Performances of Raise Boring Machine
采用振动信号分析反井钻机扩孔钻进工况
As the bit drills down, pipe is added length after length .
随着钻头往下钻，管子一段一段地加接上去。