Project Description
NOTHING PERFORMS VERTICALLY LIKE A FALCON
The Wenzel Downhole Tools Falcon Vertical Double-Acting Hydraulic Drilling Jar (VHJDA) is a bi-directional drilling jar developed to perform in the extreme conditions of deep vertical gas wells.
NOTHING PERFORMS VERTICALLY LIKE A FALCON
The Wenzel Downhole Tools Falcon Vertical Double-Acting Hydraulic Drilling Jar (VHJDA) is a bi-directional drilling jar developed to perform in the extreme conditions of deep vertical gas wells.
- Optimized connections with increased thread engagement throughout tool.
- Robust star spline torque transmission design.
- Integrated flex collars provide easy flexibility on matching BHA connections.
- Increased internal radial support lengths.
- Jar sized to drill collars, balancing bend strengths.
- Hydraulic jarring in both directions; impact force controlled by the operator during metering delay.
- Metering device ensures consistent delay times over a full range of operating temperatures.
- Standard seals in the tool are effective to 250°F (120°C). The jar can be dressed with seals effective to 400°F (200°C) for hot hole environments, and 450°F (230°C) for extreme temperature environments. External sealing surfaces are tungsten carbide-coated to enhance wear and corrosion resistance.
Jarring Up
- With the jar in the neutral position, apply the desired overpull in excess of the free string weight, starting the hydraulic delay sequence. At the end of the hydraulic delay, the jar will release causing an upward impact force.
- If necessary, lower the drill string sufficiently to close the jar to the neutral position, ready to jar up again.
Jarring Down
- With the jar in the neutral position, lower the drill string to apply the desired down force, starting the hydraulic delay sequence. At the end of the hydraulic delay, the jar will release causing a downward impact force.
- If necessary, raise the drill string sufficiently to open the jar to the neutral position, ready to jar down again.
- To prevent unintentional tripping during handling, the Falcon is fitted with a safety clamp to keep the jar in the fully extended position. The safety clamp must remain installed until the jar is ready to run into the hole.
- When preparing to run into the hole, connect the jar to the drill string and apply tension before removing the safety clamp.
- When coming out of the hole, install the safety clamp while the jar is still under tension and fully extended.
| Nominal OD (inch) | Length (ft) | Thru Bore (inch) | Tensile Yield (lbs) | Torsional Limit (ft lbs) |
Max Push/Pull During Delay (lbs) | Free Stroke Up/Down (inch) | Total Stroke (inch) |
|---|---|---|---|---|---|---|---|
| 9.12 | 30.7 | 3.00 | 1,600,000 | 150,000 | 300,000 | 8.0 | 25.0 |
Specifications are based on as new condition and are subject to change without notice.
| Nominal OD (mm) | Length (m) | Thru Bore (mm) | Tensile Yield (daN) | Torsional Limit (Nm) | Max Push/Pull During Delay (daN) | Free Stroke Up/Down (mm) | Total Stroke (mm) |
|---|---|---|---|---|---|---|---|
| 232 | 9.3 | 76 | 711,700 | 203,400 | 133,400 | 200 | 640 |
Specifications are based on as new condition and are subject to change without notice.
