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DRILLING JAR  

 

Hydraulic Drilling Jar

Hydraulic Drilling Jar is an integral hydraulic jar with up jarring and down jarring. When downhole drilling tools are stuck, the jar can provide a huge impact to unfreeze with up jarring or down jarring, thus normal drilling operation can be recovered quickly.

When the jar is used, operators can adjust to picking up it or slacking off it on surface to create up jarring impact or down jarring impact(without addition to the torque or adjustment to the outside part)and adjust impact from very small range to the biggest range needed. The jar can be operated easily and conveniently with high reliability and applied to many downhole activities of drilling, coring, fishing, workover etc. 

OD ID Connection Max.working load (Lbf) Tensile Yield Strength (Lbf) Torsion yield strength (Lbf-ft) Up Stroke Down Stroke

4 3/4''

2 1/4'' NC38

80,000

440,000

20,000

8'' 7''
6 1/4'' 2 3/4'' NC50

150,000

650,000

50,000

8'' 7''
6 1/2'' 2 3/4'' NC50

175,000

850,000

60,000

8'' 7''
7'' 2 3/4'' NC50

200,000

1,050,000

65,000

8'' 7''
8'' 3''

6 5/8REG

300,000

1,500,000

118,000

8'' 7''
9 1/2'' 3'' 7 5/8REG

500,000

1,900,000

180,000

8'' 8''

 * Other sizes available under customer needs.

 

Double Acting Hydraulic-Mechanical Drilling Jar

This is a jarring and stuck releasing tool. It integrates the up jar and down jar impact and can release the stuck accident occurring during drilling operation. According to the requirement, the tool can automatically control the impact strength and times of jarring. Moreover, it is an ideal tool for vertical well and deflecting well.

OD ID Connection Max. working load (Lbf) Tensile Yield Strength (Lbf) Torsion Yield Strength (Lbf-ft) Up Stroke Down Stroke
4 7/8'' 2 1/32'' NC38

110,160

440,000

20,000

9'' 6''
6 3/8'' 2 1/4'' NC46

139,380

610,000

50,000

9'' 6''
6 3/4'' 2 1/4'' NC46

139,380

850,000

75,000

9'' 6''
7'' 2 1/4'' NC50

139,380

1,050,000

100,000

9'' 6''
8'' 2 13/16'' 6 5/8REG

183,000

1,500,000

150,000

9'' 6''

  * Other sizes available under customer needs.

 

 
 

Other drilling string products:

PDC Drill bits Stabilizer Rotary Reamer
Mud Motor Drill Collar Heavy Weight Drill Pipe
Hole Opener Drilling jar Jar Intensifier
Shock Absorber Slide Reamer Variable Gauge Stabilizer


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