Hydraulic mechanical double acting jars

The SOKOL Drilling motors and tools Hydraulic Mechanical Double Acting Jar is the drilling tool applied for the release of stuck tools. In case of drill string stuck, the jar facilitates its release.

The Sokol Hydraulic Mechanical Double Acting Jars are specially designed to deliver hydraulic delay when jarring in the up direction and mechanical release when jarring in the down direction. A latch mechanism prevents the jar from releasing accidentally during drilling and tripping operations. Jarring intensity is controlled by the amount of the drill string tension during the hydraulic delay.

Technical specification

Nominal OD (inch) Length Space (ft) Thru Bore (inch) Tensile Yield (lbs) Torsional Limit (ft-lbs Nominal Up Latch Setting (lbs) (ft-lbs) Nominal Down Latch Setting (lbs) Max Pull During Delay (lbs) Free Stroke Down (inch) Free Stroke Up (inch)
4,13 18,9 2,00 280 000 15 000 45 000 25 000 110 000 5,0 6,0
4,75 19,6 2,25 391 000 20 000 55 000 30 000 132 000 5,0 6,0
5,25 19,6 2,25 391 000 31 500 55 000 30 000 132 000 5,0 6,0
6,50 20,5 2,25 777 000 52 400 90 000 40 000 250 000 5,0 6,0
6,75 20,5 2,75 907 500 48 800 95 000 42 000 270 000 5,0 6,0
8,00 20,7 2,81 949 000 98 000 100 000 45 000 400 000 5,0 6,0
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