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QYSZ type double-acting hydraulic drilling jar, both of upward jarring act and downward jarring act are hydraulic principle. Itcan realize the stepless adjustment of the upward jarring tonnage and the downward jarring tonnage. It can effectively protect the drill string and extend the service life.The hydraulic energy storage mechanism is designed with patent and has good stability.The delay time range is 30s ~ 240s, and the temperature range is -20 to 150 ℃.The tool is made of new special materials to ensure higher performance and reliability. It is widely used for drilling, coring, well repairing and fishing operation.

 QYSZ type double-acting hydraulic drilling jar, both of upward jarring act and downward jarring act are hydraulic principle. Itcan realize the stepless adjustment of the upward jarring tonnage and the downward jarring tonnage. It can effectively protect the drill string and extend the service life.The hydraulic energy storage mechanism is designed with patent and has good stability.The delay time range is 30s ~ 240s, and the temperature range is -20 to 150 ℃.The tool is made of new special materials to ensure higher performance and reliability. It is widely used for drilling, coring, well repairing and fishing operation.
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Tianhe Oil Group Huifeng Petroleum Equipment CO. ltd.