Double Acting Hydraulic/Mechanical Drilling Jar

The Wenzel Downhole Tools Hydraulic – Mechanical Double Acting Drilling Jar (HMDA) is a double acting jar, designed to deliver hydraulic delay when jarring up or down, complete with a mechanical lock in each direction. The HMDA incorporates a latch mechanism to keep the jar locked in the neutral position and eliminate unexpected jarring while tripping or racking back on the derrick.

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