Hydraulic Jar Accelerator
Hydraulic Jar Accelerator
The Wenzel Downhole Tools Hydraulic Jar Accelerator is a hydraulic spring that stores energy when tension is applied to the drilling string. During the jarring stroke, the energy is released upwards to accelerate the drill collars and the upper portion of the jar, intensifying the jarring impact.
- Featuring a sealed and lubricated spline drive, the Accelerator will provide long service life under high torque and stroking applications.
- Full torque can be transmitted through the Accelerator.
- Standard seals are effective up to 120°C. Can be configured with high temperature seals up to 200°C. External sealing surfaces are tungsten carbide for improved wear and corrosion resistance.
- The Accelerator is useful in shallow holes where little pipe stretch is available.
- Recommended for use in extended reach or highly deviated wells where jar performance could suffer due to hole drag.
- Standard seals in the tool are effective to 250°F (120°C). The sub can be dressed with seals effective to 400°F (200°C) for hot hole environments. External sealing surfaces are tungsten carbide- coated to enhance wear and corrosion resistance.
- The Hydraulic Jar Accelerator is traditionally used in fishing operations, but because it has a sealed spline and robust design it may also be used with drilling jars.
- Appling tension to the drill string will transfer energy to the hydraulic chamber. Follow normal recommended practices for operating the drilling jar.
