5 Inch Big John Jar Hydraulic Jar Drilling For DST Service Service

Product Description

Hydraulic Jar / Big John Jar For DST service Fracturing Service

The Big John Jar is a kind of hydraulic jar used in drill stem testing service. The hydraulic jar is the part of tool string to help remove stuck tools.
The hydraulic jar helps free a stuck tool or tool string by resisting a pull on the workstring, when the workstring is stretched by the pull, tension in the jar is released and an upward impact is delivered to the stuck tool. The pulling strength of 5” Big John Jar is 222.2kN.

Features and Benefits of Hydraulic Jar

• Design of the hydraulic system ensures long life with little maintenance.
• Rig time is reduced.
• Jar can be re-cocked rapidly.
• Jar time delay is adjustable.
• Amount of pull to trip the jar can be varied within the limits of the time- delay system.

Technical parameter of Hydraulic Jar