Drilling Jars
Downhole ToolsHydraulic and mechanical jars for freeing stuck pipe
Downhole Tools
Drilling Jars
Drilling jars are critical well intervention tools that store energy while the drill string is under tension or compression and then release it suddenly, creating a powerful impact force to free stuck pipe, casing or other downhole equipment.
We have partnered with OilFields Supply Centre Limited (OSC), Dubai, to supply HydraQuaker™ double-acting hydraulic jars — ex SLB/Smith IP — approved with ONGC / Oil India, available for both sale and rental. The jar's proprietary metering mechanism enables drillstring activation, its long free stroke delivers maximum impact, flex subs enable conveyance through high dogleg-severity intervals, and it can be run in tension or compression.
Applications
Benefits
- Large piston area prevents automatic cocking/firing under normal pump operation
- Proprietary detent system ensures consistent impact at 300°F, with optional HT seals rated to 450°F
- Standard (300°F) and high-temperature (500°F) seal kits available
Key Features
- 1High impact force generation for effective pipe release
- 2Robust design suitable for extreme temperature and pressure
- 3Reliable performance in deep drilling operations
- 4Available in hydraulic, mechanical and hydraulic-mechanical types
- 5Easy integration with drilling assemblies
HydraQuaker™ specifications by tool OD
| Tool OD, in [mm] | Tool ID, in [mm] | Connection | Max Detent Load, lbf | Tensile Yield, lbf | Weight, lbm |
|---|---|---|---|---|---|
| 4.75 [121] | 2.25 [57] | 3½ IF | 90,000 | 452,737 | 1,800 |
| 6.25 [159] | 2.75 [70] | 4½ IF | 185,000 | 761,980 | 2,400 |
| 6.5 [165] | 2.75 [70] | 4½ IF | 185,000 | 916,152 | 2,600 |
| 7 [178] | 2.75 [70] | XT-57 | 185,000 | 916,152 | 2,800 |
| 8 [203] | 3 [76] | 6⅝ Reg | 300,000 | 1,302,363 | 3,800 |
| 9.5 [241] | 3 [76] | 7⅝ Reg | 500,000 | 1,682,000 | 5,230 |
| 10 [254] | 3 [76] | 7⅝ H90 | 500,000 | 1,682,000 | 5,810 |
Enquire
Interested in Drilling Jars?
Talk to our team about availability, specifications and lead times for this product.