Drilling jar connected with drill tool and worked with drill stem is used for freeing stuck in driling operation .Ait is a first selected tool for directional well, complicated well and deep well. The jar is consisting of ZSJ (hydro) and zxj (down jaring tool , mechanical). The jarring force can be adjusted according to up elevating load but can not exceed the max.load for tool load rated .
|
Type Type
Parameters
Item |
ZSJ 80B
ZXJ 80B |
ZSJ 76B
ZXJ76B |
ZSJ70B
ZXJ70B |
ZSJ 62B
ZXJ62B |
ZSJ 56B
ZXJ56B |
ZSJ46B
ZXJ46B | |
|
O.D.(mm) |
203 |
197 |
178 |
160 |
146 |
121 | |
|
I.D.(mm) |
71.4 |
71.4 |
70 |
57 |
57 |
51 | |
|
Pull down overall length (mm) |
Up |
5515 |
5515 |
5424 |
5360 |
5730 |
5270 |
|
Down |
5250 |
5250 |
5215 |
5208 |
5000 |
305 | |
|
Pull down stroke (mm) |
Up |
368 |
368 |
344 |
344 |
332 |
305 |
|
down |
178 |
178 |
178 |
178 |
180 |
178 | |
|
Thread conn. API |
65/8REG |
65/8REG |
NC50 |
NC46 |
NC46 |
NC38 | |
|
MAX.tensile load (kn) |
2500 |
2500 |
2300 |
2200 |
2000 |
1400 | |
|
Rated release force for up jar (KN) |
400~600 |
400~600 |
350~550 |
300~450 |
200~350 |
150~250 | |
|
MAX.UP JARRING RELEASED FORCE |
750 |
750 |
550 |
550 |
450 |
270 | |
|
MAX. down jarring release force |
600 |
600 |
550 |
500 |
400 |
250 | |