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Both of the upward jarring tonnage and the downward jarring tonnage of QJZ type mechanical drilling jar are adjustable, and the adjustment range is wide. For full mechanical structure, the internal cavity does not produce high pressure to make the seal more reliable and, make the shock effect not affected by changes in oil quality of hydraulic oil. The service life has been significantly improved; The jar with a special flexible joint can effectively reduce the jar itself bending stress. The tool is made of new special materials to ensure higher performance and reliability. The product is widely used for vertical wells, deep wells, complex wells and directional wells. 


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.