| 1. | Stability analysis of drill - string in directional drilling 定向井钻柱稳定性分析 |
| 2. | Oil recovery technique of rotary screw pump in directional - wells 定向井螺杆泵采油技术 |
| 3. | Method of bottom hole assembly design in directional wells 定向井下部钻具组合设计方法 |
| 4. | Wellpath design trajectory calculation for directional drilling 定向井轨道设计与轨迹计算 |
| 5. | Abutting technology for horizontal directional well of js6 and js 5水平定向井连通施工工艺 |
| 6. | High angle multi - target directional well drilling technology in long open hole 长裸眼大斜度多目标定向井钻井技术 |
| 7. | Extended - reach directional well 大位移定向井 |
| 8. | Tvd : true vertical depth 定向井的垂直深度 |
| 9. | Multi - target directional well 多目标定向井 |
| 10. | Application of horizontal directional well technology in a salt well in guangdong 水平定向井技术在广东某盐井中的应用 |