Drilling Jars

The ADT Hammer Jars are dual-acting, fully-hydraulic drilling jars that can provide up and down jarring blows of variable intensity to free stuck drill strings. They are available with high temperature seals for geothermal applications. Please refer to our DRILLING JAR MANUAL for a full description, specifications, and operating instructions.

Shock Subs

The ADT Shock Sub is a dual-acting, pressure-balanced shock sub with variable spring rates as required by the drilling environment. The jars shocks are available in 4¾", 6½", 8", and 9" outside diameter. They are available with high temperature seals for geothermal applications. Please refer to our ADT SHOCK SUB MANUAL for a full description, specifications, and operating considerations.

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