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DJ Type Surface Jar

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product description

The surface jar is an effective tool for resolving the problem of stuck drill tool in down hole.It is connected with the surface section of drill string, the device to adjust the tonnage shall protrude from the rotary disc face,the violent down jarring to the stuck catch can be clearly seen when the surface jar makes jarring operation. The jarring strength for the tool can be easily adjusted and it is a easy operated ,unique designed tool which can make continuous down jarring .The surface jar ,which not only can bear heavy load and strong torque but also owns a good sealing property and can withstand the mud circulation with high pump pressure,has proven to be an safe,successfully effective releasing tool through many years’application.

Make-up torque Unit:KN.m

Model

connections for
external bowl.

Between top sub and
central pipe

Between Central pipe
and slip mandrel

Between tailpipe and
lower sub

DJ46

8

5

5

2.5+(-)0.25

DJ170

39

12.7

6.4+(-)0.49

3.9+(-)0.39

Thechnical specifications and parameters

Model

DJ46(4 3/4")

DJ70(7")

O.D.mm(in)

121(4 3/4)

178 (7)

Max.Jarring force MN(tf)

0.6(61+(-)5)

0.8 (80+(-)5)

Max.Tension Load MN(tf)

1.2(122.00)

1.5 (153.00)

Sealing Pressure Mpa (kgf/cm2)

15(153.00)

15 (153.00)

Stroke mm (in)

1000 (~39)

1220 (~48)

I.D.mm(in)

32(1 1/4)

61 or 51(2 3/16 or 2)

Thread Connection

NC38(3 1/2"IF)

NC50 (4 1/2" IF)

Closed Length mm (in)

2500 (94.43)

3000 (94.43)

Total Weight (kgs)

200

525

Corresponding parameter set not found, please add it in property template of background
暂未实现,敬请期待
暂未实现,敬请期待
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