| 1. | Servo - aligning sealer for polished rod at wellhead
抽油井口随动对中光杆密封器 |
| 2. | Field application of qbzc - 25 28 polish rod sealer
28光杆密封器的现场应用效果评价 |
| 3. | Design of the polished rod dropout braking system
抽油机光杆断脱抱死系统设计 |
| 4. | Development and application of polish rod vibration absorber
光杆减震器的研制与应用 |
| 5. | Effects of polished rod clamps on polished rod fatigue life
光杆卡对光杆疲劳寿命的影响 |
| 6. | Application of new type polished rod sealor
新型光杆密封器的应用 |
| 7. | Development and application of centralizing polished rod stuffing box
随动对中光杆密封器的研制与应用 |
| 8. | Diagnosis of the production system from the load borne by the polished rod
螺杆泵井光杆受力法工况诊断技术 |
| 9. | Development of auto - adjusting sealing device of polished rod used on heavy oil thermal recovery wellhead
稠油热采井口光杆自动调偏密封装置 |
| 10. | Development and application of blowout hookup for polish rod breaking and dropout in rod - pumped well of high pour - point oil field
高凝油油田抽油机井光杆断脱防喷装置的研制及应用 |
