The Wenzel HJ is a single acting, upward firing jar designed primarily to free your assets from tight jams. The HJ is smaller and lighter than our line of drilling
jars, and can be positioned in conjunction with accelerators to provide optimal jarring action. Additionally, the HJ can be configured in our ULTIMATE set up,
giving you the highest overpull on the market.

Learn more about our ULTIMATE drilling jars »

The HJ is hydraulically activated in the up direction with impact force controlled by the operator. The Visco Jet metering device ensures consistent delay times
over a full range of operating temperatures.

Built to last

Though our HJ is designed to be rugged enough for drilling applications, it is intended for fishing, coring and milling applications. A long, splined mandrel
ensures the HJ is not affected by torsional forces and splines are sealed and lubricated to minimize friction and reduce wear.

Features

• Hydraulically controlled and jars in the up direction
• Impact force is controlled by a metering device that ensures consistent delay times over the full range of operating temperatures
• A long, splined mandrel ensures the jar is not affected by torsional forces
  • Spline is sealed and lubricated to minimize friction and extend tool life
• Free stroke of 4″ to 6″ (depending on tool size) provides an impact force to the stuck point several times higher than the overpull force applied to the jar
• Standard seals are effective to 250ºF (120ºC), and the HJ can be dressed with seals effective to 400ºF (200ºC) for hot hole environments
• All external sealing surfaces are coated with wear and corrosion resistant tungsten carbide

Ideal use cases

• Intended for fishing, coring and milling applications but tough enough for drilling applications