JSZ Type Mechanical Drilling Jar
Specifications
mechanical drilling jar:1.It integrates the up jarring with the down jarring, with a shorter length at present.
2.Type:JSZ
mechanical drilling jar
1.Model JSZ mechanical drilling jar integrates the up jarring with the down jarring, with a shorter length at present.
2.It can reduce the harmfulness from the flexural stress in downhole operation.
3.So it is more safe and reliable and is superior in sea drilling and directional drilling.
Model |
O.D. mm |
I.D.mm |
Connection api |
Upward jarring stoke mm |
Working torque kn·m |
Max.tensile load MN |
Max.up jar load MN |
Max.down jar load MN |
JSZ46 |
124 |
51.4 |
NC38 |
227 |
13 |
1.4 |
490 |
270 |
JSZ62 |
162 |
57.2 |
NC46 |
230 |
15 |
2.2 |
600 |
360 |
JSZ64 |
168 |
57.2 |
NC46 |
230 |
15 |
2.2 |
600 |
360 |
JSZ80 |
203 |
71.4 |
6 5/8REG |
232 |
20 |
2.5 |
820 |
460 |
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