Drilling Jars
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    Drilling Jars

    Jar Placement ApplicationNational Oilwell Varco Downhole manufactures Griffith™ and Bowen™ drilling jars suited for all drilling operations. Product offerings include Double-Acting Hydraulic/Mechanical jars, Hydraulic/Mechanical jars, and PowerStroke Hydraulic Up/Down jars. NOV’s Drilling Jar Placement Program can be downloaded from the link on this page, allowing the determination of the optimum jar placement in the drillstring to maximize the energy of the jarring impact and impulse.



    4 Total Products
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    Powerstroke Hydraulic Drilling Jar
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    Drilling Jar
    shock tool - thumb2
    Hydraulic Mechanical Drilling Jar
    Drilling Tools
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