3 7/8″ x 10000 psi Full Bore Hydraulic Jar slim hole

Product Description

Payment & Shipping Terms Supply Capacity
Unit Price: 500.0 USD Production Capacity: 30 pcs/month
Trade Term: FOB,CFR Packing: polywood case
Payment Terms: L/C, D/A, T/T Delivery Date: 7 days
Min. Order: 1 Piece/Pieces
Means of Transport: Ocean, Air, Land

3 7/8″ x 10000 psi Full Bore Hydraulic Jar slim hole

Hydraulic Jar / Big John jar for the drill stem testing 

Brief of Hydraulic jar

Hydraulic Jar is a kind of safety tool. When testing tool get stuck, you can use bumper to unfreeze the tool and carry on

shocking pipe string. When using this bumper, you should exert a pulling power to the pipe string first, and then

releasing the pulling power on the bumper so that the drill stem contracts after the drill stem is stretched. At this time,

an impact will act to a jammed tool. If you need multiple shocks, you can operate the bumper repeatedly and repeat

the above procedures to obtain.

Features of Big John Jar
• Design of the hydraulic system ensures long life with little maintenance.

• Rig time is reduced.

• Jar can be recocked rapidly.

• Jar time delay is adjustable.

• Amount of pull to trip the jar can be varied within the limits of the time-delay system.

The Full bore hydraulic jar is designed for easy control of the jarring action by the operator. The time delay impact control is allowed for by use of Flow Restrictors between the upper and lower oil chambers. Fluid flow is restricted only in the upward pull direction so the jar is easily reset for subsequent jars.

Specifications 3 7/8″ 5″
Outside Diameter 99 127.5
Drift Diameter 38 57
Total Length 1574 1708
 Amount of Stretching 255 255
 Pulling Power 177.9KN 222.2KN
Working Pressure 70MPa 70MPa
Working Temperature 29℃~177℃ 29℃~177℃
Resistance to Tension 1197 1406
Internal Pressure Strength 135MPa 118MPa
Outer Pressure Resistance 159MPa 77MPa
Torque Strength 32KN.m 22KN.m
Binding Screw Thread 2 7/8″ CAS&2 7/8″EU 3 7/8″ CAS& 3 1/2″IF