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

Categories Drill Stem Testing Tools
Brand Name: ZZ TOP OIL TOOLS
Model Number: Hydraulic Jar / Big John Jar
Certification: ISO, API
Place of Origin: China
MOQ: 1 set
Price: USD 1-10000/set
Payment Terms: L/C, T/T, D/P
Supply Ability: 10 set/month
Delivery Time: 30-50 days
Packaging Details: Pollywood
Product: Hydraulic Jar / Big John Jar
Type: APR Tools
Size: 5 inch & 3 7/8inch
Working Pressure: 15000psi
Application: Oil Well Downhole Testing Service
Connection: IF, EUE , CAS
Working Condition: Oil & Gas & H2S service
Working Temperature: Up to 425oF
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5 Inch Big John Jar Hydraulic Jar Drilling For DST Service Service

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


Size127.5mm(5”)
ID57mm
Length1695mm(IF BxP)
Working Pressure105Mpa
Tensile Strength1406KN
Internal Pressure Strength149Mpa
External Pressure Strength138Mpa
Torque Strength22KN.m
ServiceNACE MR0175,Above 175F
Working Temperature-29oC~204oC
Connection Thread3 1/2” IF BXP 3 7/8” CAS BXP



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