non-offset bit

Study of kinematics of offset single cone bit

偏心单牙轮钻头运动学研究

Dynamic model of roller bit with nine degrees of freedom;

九自由度牙轮钻头动力学模型研究

Computer simulation for the side-cutting of roller bits;

牙轮钻头侧向切削的计算机仿真

Model to determine rock drillability by roller bit;

牙轮钻头可钻性级值的确定方法

bridge of the bit

四牙轮钻头牙轮支架

cone type roller bearing rock bit

滚柱轴承锥形牙轮钻头

Blast hole tricone rock bits

GB/T13343-1992矿用三牙轮钻头

insert rock bit

镶硬合金齿牙轮钻头

Comparative analysis of drilling characteristics of dia- mond bits and roller bits

金刚石钻头与牙轮钻头钻井特点对比分析

Research on the simulation of the tooth slippage of the cone bit

牙轮钻头牙齿滑移量规律的仿真研究

AN APPLICATION OF ABRASIVE WATERJET INTO CUTTING OF CONE BIT

磨料水射流在切割牙轮钻头中的应用

Prediction and evaluation of systematic reliability of tricone bit

三牙轮钻头系统可靠性的预测与评估

The development and application of a new type rock bit with bearing liner structure;

镶套轴承结构牙轮钻头的开发与应用

The new-type mono-metal floating seal for roller bit

牙轮钻头用新型单金属浮动密封研究

Simulation model of drilling process of three-cone bit

三牙轮钻头破岩过程计算机仿真模型

Method of Calculating Three Cone Bit Diameter by Using Excel

用Excel实现三牙轮钻头直径计算的方法

Application of Roller Bit Combination Drilling Technology in Nappe Strata of Qingxi Oilfield

牙轮钻头复合钻进在青西推覆体地层的应用

The vertical Interaction Model of cone Bit Teeth-rock

牙轮钻头牙齿与岩石垂向互作用仿真模型

TEST STUDY OF A NEW TYPE NON-SEAL SLIDING BEARING CONE BIT

新型非密封滑动轴承牙轮钻头的试验研究

APPLICATION AND RESEACH-DEVELOPMENTOF WATER JET TECHNOLOGY IN ROCK BIT

水射流技术在牙轮钻头中的应用与研究进展

EXPERIMENTAL STUDY ON SELF EXCITED RESONANT PULSE JET NOZZLE FOR ROLLER BIT

牙轮钻头自激振荡脉冲喷嘴的实验研究

Boundary element method for stress analysis of tungsten carbide insert interface on cone bit

牙轮钻头镶齿结合面应力分析的边界元法