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Addr: Head Office: 538#,North 2nd Road,Dongying District,Dongying Shandong,china Branch Office:West Zhuhai Road, Guanghan Sichuan, China
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Your Current Location:Home > Products > Drilling Jar > QJ Drilling Jar
Product Name:QJ Drilling Jar
Product Detailed:

      The QJ Drilling Jar is dual-action mechanical drilling jar that capable of jarring both upward and downward. The QJ Drilling Jar can deliver an extra-hard jolt when the bottom hole assembly or another component becomes stuck. This jar is a simplified tool compared to other jars on the market, making it a worry-free option.

Features & Benefits: 

●A heavy duty splined mandrel for maximum torque
●A high overpull capacity
●A large thru hole bore
●Delivered with a safety damp



QJ Drilling Jar Specification (English Units)


Model

O.D.

(in)

I.D.

(in)

Connection

(API)

Max. Pull

(lbs)

Max. Torque 

(ft-lbs)

Pump Open Area

(in2)

Free Stroke Up

(in)

Free Stroke Down

(in)

Overall Length

(in)

4-3/4”

4-3/4

1-3/4

NC38

220,000

8,856

9.3

6.3

7

249.7

6-1/4”

6-1/4

2

NC46

330,000

10,332

15.5

5.8

6.4

250.2

6-1/2”

6-1/2

2-1/8

NC50

352,000

10,332

15.5

5.8

6.4

250.2

7”

7

2-1/4

NC50

396,000

11,070

15.5

5.8

6.4

250.2

8”

8

2-7/8

6 5/8REG

485,000

13,284

27.3

5.7

6.7

276.9

9”

9

3

7 5/8REG

551,000

16,237

28

7

8

297.4


QJ Drilling Jar Specification (SI Units)

Model

O.D.

(mm)

I.D.

(mm)

Connection

(API)

Max. Pull

(Ton)

Max. Torque

(KN-m )

Pump Open Area

(cm2)

Free Stroke Up

(mm)

Free 

Stroke own

(mm)

Overall Length

(mm)

QJ121

121

45

NC38

100

12

60

160

180

6343

QJ159

159

50

NC46

150

14

100

148

163

6355

QJ165

165

54

NC50

160

14

100

148

163

6355

QJ178

178

57

NC50

180

15

100

148

163

6355

QJ203

203

71.4

6 5/8REG

220

18

176

144

170

7034

QJ229

229

75

7 5/8REG

250

22

181

180

203

7553





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Addr:Head Office: 538#,North 2nd Road,Dongying District,Dongying Shandong,china Branch Office:West Zhuhai Road, Guanghan Sichuan, China  Tel:0546-8521135 0838-5195629    
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