| Customization: | Available |
|---|---|
| After-sales Service: | Support |
| Warranty: | Support |
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QJZ mechanical drilling jar is fully mechanically operated and is an integrated unit that provides both up and down jarring operation. As part of the drill stem, it is used to free drill string components from sticking incidents and increase drilling efficiency by providing instantaneous jarring action without delay. The mechanical drilling jar relies on a trip and friction sleeve to activate jarring action. The jar is designed to trigger the jarring action when a sufficient amount of force (jar trip load) is applied to the jar in either up or down direction.
There is another set of internal spring sleeve located at the top of the slips. Down Jarring is achieved by lowering(pushing) the drill string until it reaches the jar trip load. The jar trip load will cause the internal spring unit to deform, allowing the trip sleeve to engage the friction sleeve. When this happens, the mandrel is suddenly freed to release the jarring force. To reset the jar, remove the downward load by pulling the drill string.
| Model | QJZ95 |
QJZ108 |
QJZ121 |
QJZ159 |
QJZ165 |
QJZ178 |
QJZ203 |
QJZ229 |
| Product Code | 1603000 |
1605000 |
1608000 |
1610000 |
1611000 |
1613000 |
1615000 |
1616000 |
| O.D. (mm) | 95 | 108 | 121 | 159 | 165 | 178 | 203 | 229 |
| I.D. (mm) | 28 | 38 | 51 | 57 | 57 | 57 | 71.4 | 76.2 |
| Total Length (mm) | 6000 | 6000 | 6000 | 6970 | 6970 | 6468 | 7310 | 7820 |
| Upper Stroke (mm) | 200 | 200 | 200 | 142 | 142 | 149 | 145 | 203 |
| Lower Stroke (mm) | 200 | 200 | 200 | 172 | 172 | 168 | 178 | 203 |
| Max.Up Jarring Force (kN) | 200 | 300 | 430 | 620 | 620 | 700 | 800 | 800 |
| Max.Down Jarring Force (kN) | 100 | 150 | 300 | 360 | 360 | 420 | 450 | 450 |
| Max.Tension Load (kN) | 600 | 800 | 1400 | 2200 | 2200 | 2200 | 2500 | 3000 |
| Max.Work Torque (kN.m) | 4 | 8 | 10 | 15 | 15 | 15 | 20 | 25 |
| Connection | NC26 | NC31 | NC38 | NC46 | NC50 | NC50 | 6 5/8 Reg | 7 5/8 Reg |
| Flexion Connection Length (mm) | 3398 |
3370 |
3347 |
3456 |
3456 |
3476 |
3048 |
2580 |
| Pumping Area (cm2) | 33 | 44 | 50 | 100 | 100 | 133 | 176 | 193 |
| Weight (kg) | 360 | 432 | 573 | 1150 | 1240 | 1350 | 1780 | 2375 |
All the packing will be suitable for export packing. All precautions will be taken to protect the cases from damage during overseas transportation,so as to receive them under proper conditions at the final destination.
Tianhe Oil Group Huifeng Petroleum Equipment Co., Ltd is a modernized medium-scale enterprise specialized in production of oil and gas tools.
As an API-Certified established manufacturer and supplier of a comprehensive range of downhole equipment with related accessories, we are committed to providing the highest Quality products for the Petroleum and natural gas industry since 1973.
Tianhe Oil Group strongly believes and promotes Total Quality Management, implement the ISO quality management system and HSE management system and API Standard, which has been deeply implanted into every person's thought and carried out into every aspect of work.
So far, Tianhe Oil Group has established strong business relationships with over 200 international oil & gas companies in supporting the top 50 oil producing countries.
We take pride in delivering superior performances and reliability. Our objective is to exceed your expectations, improve your economics and be an integral part of your strategies.
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