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Mechanical drilling jar is a full mechanical type drilling jar and releasing stuck tool. It integrates upward jarring with downward jarring releases the tight pull or the sticking or other drilling tr
Mechanical drilling jar is a full mechanical type drilling jar and releasing stuck tool. It integrates upward jarring with downward jarring releases the tight pull or the sticking or other drilling troubles during drilling. It is a part of drill stem when it needn't jarring and it can work at anytime when need jarring. Thus increasing the work efficiency.
It has wide load ( jarring force) scope of the upward jarring and the downward jarring, so it can be adjusted at the maintenance stations or on the well sites according to the requirements. The special flexible joint can reduce the flexural stress of the drilling jar body efficiently. So it is the first selected drilling jar for vertical well, deep well, directional well and complicated well operations.
We also produce H2S resistance jars, which adopt high quality imported sulfur-resistance material.
OD mm (inch) | 121 (4 3/4) | 165 (6 1/2)/159 (6 1/4) | 203 (8)/197 (7 3/4) |
ID mm (inch) | 50.8 (2) | 57.2 (2 1/4) | 71.4 (2 13/16) |
OAL mm (inch) (Locking place) | 6370 (251) | 7015 (276) | 7310 (288) |
Upper stroke mm (inch) | 210 (8 1/4) | 142 (5 9/16) | 145 (5 1/16) |
Lower stroke mm (inch) | 197 (7 3/4) | 172 (6 3/4) | 178 (7) |
Connection API | NC38 | NC50 | 6 5/8REG |
Max. tensile load (MN) | 1.4 | 2.2 | 2.5 |
Max. working torque (KN.m) | 13 | 15 | 20 |
Upward jarring force (KN) | 450 | 630 | 820 |
Downward jarring force (KN) | 230 | 360 | 460 |
Pumping area (cm2) | 62 | 100 | 174 |
