| 1. | Stability analysis of drill - string in directional drilling
定向井钻柱稳定性分析 |
| 2. | Simulation method on directional drilling - hole course
定向钻孔轨迹的模拟方法 |
| 3. | The international market for directional drilling equipment
水平定向钻进设备的国际市场 |
| 4. | 8th annual horizontal directional drilling survey in usa
第8次美国水平定向钻进市场调查 |
| 5. | Wellpath design trajectory calculation for directional drilling
定向井轨道设计与轨迹计算 |
| 6. | Design to hydraulic system for micro directional drilling machine
微型定向钻液压系统的设计 |
| 7. | Application of matlab to directional drilling crossing engineering
在定向钻穿越优化设计中的应用 |
| 8. | Comprehensive gas drainage method with long directional drilling hole
定向长钻孔综合抽放瓦斯方法 |
| 9. | Review simply on application of horizontal directional drilling of non - excavation
浅谈非开挖水平导向钻的应用 |
| 10. | Application of horizontal directional drill to laying of underground pipeline
水平导向钻机在地下管道铺设中的应用 |
