1.
An analysis of the failure of the while-drilling bumper sub and damper and its solution
随钻震击器及减震器失效分析与解决方案
2.
pressure balanced drilling bumpersub
压力平衡式钻井震击器
3.
diamod-enhanced hammer bit
金刚石镶齿震击钻头
4.
multisensor MWD system
多传感器随钻测量系统
5.
oil-sealed jar safety joint
油封式震击器安全接头
6.
fishingcoring jar
打捞和取心用震击器
7.
Numerical Simulation on SWD Seismic Wave Propagation and Data Processing
随钻地震波场传播与数据处理方法的数值实验
8.
Dynamic load analysis of the drill collar during jarring operations by the FEM
震击作用时钻铤上动载荷的有限元分析
9.
Circuit Design to Get The Attitude of Drilling Machine Based on MEMS Sensors
基于MEMS器件的随钻测量单元电路设计
10.
Downhole drill hammers and drills
GB/T13344-1992潜孔冲击器和钻头
11.
By using this jar together with Model YJQ jar accelerator, more remarkable effect can be obtained.
这种震击器与YJQ型震击加速器一同使用，可获得更显著的效果。
12.
a steel drill with a star-shaped point that is used for making holes in stones or masonry; it is operated by hitting the end with a hammer while rotating it between blows.
用于石器或石匠术钻孔的有星形钻头的钢钻；通过锤子的敲击来工作，两次敲击之间旋转。
13.
Improvement and Application of Hydraulic Jar for High Pressure and Super Deep Wells
高压、超深井液压震击器的改进及应用
14.
Research on Compensation of Sensors and Signal Processing Technology in MWD;
随钻测斜仪中传感器补偿及信号处理技术研究
15.
Design of Data Acquisition Controller in MWD Testing System
随钻测量仪测试系统数据采集控制器设计
16.
Low-power Design of LWD Sensor
随钻测井系统井下传感器的低功耗设计
17.
The design of control circuit for wireless MWD pulser
MWD无线随钻测量仪脉冲发生器控制电路的设计
18.
Research on the Working Life of Key Accessory of Oil Drilling Impacting Machine;
石油钻井冲击器关键零部件工作寿命的研究