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Home > Product Center>Drilling jars >QYSZ type double-acting hydraulic drilling jar
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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.

In order to timely and accurately provide the products you need, please confirm the following when choosing jar products:
1. When ordering, please indicate the product model completely. (Please refer to the brochure for the specific product model.) If the product you ordered has been modified, we will supply the latest model without notice.
2. Unless otherwise directed, we will supply the product with our company's standard thread.
3. When ordering accessories and removal tools, please specify the model of jar, the name and the quantity of accessories and removal tools, and the past contract number. 
4. If you have any questions when choosing a product model, please contact us.
In order to timely and accurately provide the products you need, please confirm the following when choosing jar products:
1. When ordering, please indicate the product model completely. (Please refer to the brochure for the specific product model.) If the product you ordered has been modified, we will supply the latest model without notice.
2. Unless otherwise directed, we will supply the product with our company's standard thread.
3. When ordering accessories and removal tools, please specify the model of jar, the name and the quantity of accessories and removal tools, and the past contract number. 
4. If you have any questions when choosing a product model, please contact us.
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Tianhe Oil Group Huifeng Petroleum Equipment CO. ltd.