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ZSJ/ZXJ Drilling jar

Mudanjiang Dongxu Machinery Co., Ltd.

ZSJ/ZXJ Drilling jar

Place of Origin : China

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Drilling jar which is connected with drill tool and worked with drill string is a downhole unfreezing tool in drilling operation. The drilling jar is consisting of ZSJ type drilling up jar and ZXJ type drilling down jar, both they can be used mutually or operated separately. The up jarring section makes use of hydraulic mechanism, the jarring force can be adjusted according to up elevating load but can not exceed the max. load for tool load rated. The down jarring section makes use of mechanical friction mechanism, the jarring force is well preadjusted by adjusting device before put into downhole. No re-adjustment can be allowed after jar is put into downhole.It is a first selected tool for directional will, complicated will and deep well.


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