Model ZDQ Hydroscillator
Model ZDQ hydroscillator improves the effectiveness of bit pressure transmission and frictional resistance between BHA (the pit bottom assembly like drill bit, centering guide, extra-heavy drill rod ( drilling tools) except for ordinary drilling rod in drilling process by the longitudinal vibration generated by itself, especially to improve the drilling pressure transmission with a screw, reduce the frictional resistance, cut down the ordinary drilling sticking accidents, increase the dynamic drilling pressure and improve drilling efficiency in directional drilling process.
Specifications
| Model | ZDQ86 | ZDQ121 | ZDQ172 | ZDQ203 |
| Size mm(in) | 86(3-3/4) | 121(4-3/4) | 172(6-3/4) | 203(8) |
| Length m | 7.6 | 7.6 | 7.9 | 8.5 |
| Max. Tensile T | 80 | 160 | 290 | 430 |
| Max. Temperature ℃ | 160 | 160 | 160 | 160 |
| Operating Pressure Differential (psi) | 400-650 | 450-650 | 500-700 | 550-700 |
| Connection | 2-7/8" REG | NC38 | NC50 | 6-5/8" REG |
| Displacement Scope l/s | 6-10 | 9-15 | 25-35 | 35-55 |
| Pressure excited frequency Hz | 19-25 | 18-19 | 16-17 | 16 |
| Recommended Use Life h | 120 | 150 | 200 | 300 |