| 1. | Determinationof impact force of drill pump valve in closing
钻井泵泵阀关闭时冲击力的测定 |
| 2. | A new type of mud pump valve without impact
一种新型无冲击钻井泵阀 |
| 3. | Design of a new type drilling pump valve
新型钻井泵泵阀的设计计算 |
| 4. | The research for the fault diagnose method of oil drilling pump
钻井泵故障诊断方法的探索与实践 |
| 5. | The pump stroke sensor is installed near the rotary shaft of mud pump
泵冲传感器装在钻井泵转轴附近。 |
| 6. | The application of wavelet to fault diagnosis of drilling pump valve
小波分析在钻井泵阀故障诊断中的应用 |
| 7. | Application of wavelet de - noise to leaking fault diagnosis for drilling pump valve
小波消噪用于钻井泵阀泄露故障诊断 |
| 8. | Testing method of the impacting force of drilling pump valve in the course of valve closing
钻井泵阀冲击力的应变测试方法 |
| 9. | Deep bore well pump
深钻井泵 |
| 10. | The fault tree analysis of drilling pump valve and manufacture of new type of drilling pump valve
钻井泵泵阀的故障树分析及新型泵阀的研制 |
