Based on strata characteristics,designed 8? matrix bodied triple stepped PDC coring bit and steel bodied multiple stepped tungsten-carbide-tipped coal coring bit.
为满足设计要求,选择平顶山五环实业有限公司研制的大口径绳索取心器,并根据地层特点,设计了81/2胎体式三阶梯PDC复合片绳索取心钻头及钢体式多阶梯硬质合金取煤钻头。
The bottom hole flow physical model of a kind of PDC coring bits is established considering the effect of junk slot and teeth layout in this paper.
以一种现场常用的PDC取心钻头为原型,充分考虑排屑槽和切削齿对于井底流动的影响,建立了与实际相接近的PDC取心钻头井底流场的物理模型。
double taper bit
两层镶嵌刃取心钻头
Research on Bionic Coupling Diamond Coring Bits in Drilling Hard Rock
硬岩钻进用仿生耦合金刚石取心钻头研究
DEVELOPMENT AND APPLICATION OF THE TUNGSTEN CARBIDE WIRELINE CORE BITS
硬质合金绳索取心钻头的研制和应用
Finite Element Analysis of Cutting Load of Geological PDC Coring Bit
地质PDC取心钻头切削载荷有限元分析
On how to Make Rational Use of Impregnated Diamond Core Bit: A Brief Introduction of a New Series of Drilling Bits Manufactured by the Longyear Co.
如何用好孕镶金刚石取心钻头——长年公司新系列钻头简介
Researches and Applications of Compound Diamond Core Bit with Sintered Body
混合型金刚石烧结体取心钻头的研制及应用
Development and Application of Wire-line Coring Bit for Hard and Compact Rock Formation
坚硬致密岩层用绳索取心钻头的研制与应用
Study of PDC Coring Bit Main Parameters on Impact of Intensity
取心PDC钻头主要几何参数对其强度影响的研究
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
electrically driven rotary sidewall sampler
电动钻进式井壁取心器
Diamond core drilling equipment--Wire line system
GB/T16951-1997金刚石绳索取心钻探钻具设备
Improvement and Development of Core Drilling Method in Scientific Drilling
科学钻探取心钻进方法的改进和发展
so every so often a sample is obtained with a coring bit.
因此时常要用取芯钻头取样。
unit-type drill head
组合钻床钻头, 标准钻头
an annular drilling bit to allow core samples to be taken.
用来获取采样的一种环形钻头。
In a minute Jimmy's pet drill was biting smoothly into the steel door.
不一会儿，吉米心爱的钻头已顺利钻进了钢门。
In a minute Jimmy's pet drell was biting smoothly into the steel door.
不一会儿，吉来心爱的钻头已顺利钻进了钢门。
Selection of Core Drilling Method for WFSD-2 of Wenchuan Earthquake Scientific Drilling Project
汶川地震科学钻探二号孔取心钻进方法的选择