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  • Hydraulic Drilling Jar
Name:Hydraulic Drilling Jar
Name:Hydraulic Drilling Jar
Standard:API
Size:customed
Type:ZSJ, ZXJ
Material:Alloy Steel
Color:Blue
Application:Well Drilling

Product Description

The drilling jar connecting with drill tool and working with drill strings is a downhole stuck freeing tool in drilling operation. When drill tool is happened to be stuck in downhole, the stuck drill tool can be released by in time starting the drilling jar to provide continuous up jarring or down jarring . It is a desire tool for directional well, complicated well and deep well.

The drilling jar is consisting of ZSJ type drilling up jar and ZXJ type drilling down jar , both can be used mutually or operated separately . The up jarring section takes use of hydraulic mechanism; the jarring force can be adjusted according to up elevating load but can not exceed the max. load for tool load rated. The down jarring section takes use of mechanical friction mechanism; the jarring force is well pre-adjusted by adjusting device before put into down-hole. No re-adjustment can be allowed after jar is put into down-hole.

Parameters/Model

              

ZSJ80B        

ZSJ76B          

ZSJ70B    

ZSJ64B       

ZSJ62B     

ZSJ56B     

ZSJ46B     



ZXJ80B

ZXJ76B

ZXJ70B

ZXJ64B

ZXJ62B

ZXJ56B

ZXJ46B

O.D. (mm)


203

197

178

165

160

146

121

I.D. (mm)


71.4

71.4

70

57

57

57

47

Pull down overall length

Up

5515

5515

5424

5360

5360

5730

5300

(mm)

Down

5250

5250

5215

5215

5215

5000

4760

Pull down stroke (mm)

Up

368

368

344

344

344

332

305


Down

178

178

178

178

178

180

178

API Connection


6 5/8 REG

6 5/8 REG

NC50

NC46

NC46

4 1/2 FH

NC38

Max.tensile load (KN)


2500

2500

2300

2200

2200

2000

1400

Max.working Torque (N.m)


20×103

18×103

15×103

15×103

15×103

15×103

13×103

Rated release force for up jar (KN)


400~600

400~600

350~550

300~450

300~450

200~350

150~250

Max.up jarring released force (KN)


750

750

550

550

550

450

270

Max.down jarring release force (KN)


600

600

550

500

500

400

250

Weight


2124kg

1950kg

1350kg

1200

1090kg

870kg

650kg


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