Hydraulic jar

Details Hydraulic jar Hydraulic jar

E - Fixed Constructions

21

B

E21B 17/02 (2006.01) E21B 31/113 (2006.01)

Patent

CA 2072851

There are disclosed alternate embodiments of a double acting hydraulic jar having a single detent chamber having a restriction on the inner diameter of its outer tubular member through which detent means carried about the outer diameter of the inner tubular member may be moved in order to impart either an up or down jar.

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