Drilling jars
 Model No: | API certificate |
 Name: | Drilling jars |
 Application: | land and offshore wells |
- Description
- Specifications
- Contact Us Now
During drilling operations, due to complex geological structures, such as well wall collapse, plastic flow and squeezing of the formation in the open hole, and improper technical measures, such as long pump stop time, bit mud packs, etc., drilling tools often get stuck. Shock sub is one of the effective tools to eliminate stuck accidents.
Our company can provide while-drilling jar (composed of a hydraulic top jar and a mechanical dumper jar), mechanical while-drilling jar, hydraulic while-drilling jar, mechanical and hydraulic integrated while-drilling jar, super drilling jars, hydraulic top jar, and surface jar, etc.
| Model | ZSJ94B | ZSJ90B | ZSJ80B | ZSJ76B | ZSJ70B | ZSJ66B | ZSJ64B | ZSJ62B | ZSJ56B | ZSJ46B |
| O.D.(mm) | 9-1/2 | 9 | 8 | 7-3/4 | 7 | 6-3/4 | 6-1/2 | 6-1/4 | 5-3/4 | 4-3/4 |
| 241 | 229 | 203 | 197 | 178 | 172 | 165 | 160 | 146 | 121 | |
| I.D.(mm) | 3， | 3 | 2-13/16 | 2-13/16 | 2-3/4 | 2-1/2 | 2-1/4 | 2-1/4 | 2-1/4 | 1-27/32 |
| 76 | 76 | 71.4 | 71.4 | 70 | 63.5 | 57 | 57 | 57 | 47 | |
| (mm) Upward stroke | 13-1/2 | 13-1/2 | 14-1/2 | 14-1/2 | 13-1/2 | 13-1/2 | 13-1/2 | 13-1/2 | 13 | 13-1/2 |
| 343 | 343 | 368 | 368 | 344 | 344 | 344 | 344 | 332 | 305 | |
| (mm) Downward stroke | 10 | 10 | 7-1/8 | 7-1/8 | 7 | 7 | 7 | 7 | 7-1/8 | 7 |
| 254 | 254 | 181 | 181 | 178 | 178 | 178 | 178 | 180 | 178 | |
| Connection | 7-5/8REG | 7 | 6 | 6 | NC50 | NC50 | NC50 | NC46 | 4-1/2FH | NC38 |
| (KN) Max. pull force | 2800 | 2800 | 2500 | 2500 | 2300 | 2200 | 2200 | 2200 | 2000 | 1400 |
| Allowed working torque | 22 | 22 | 20 | 18 | 15 | 15 | 15 | 15 | 15 | 13 |
| Norminal upward releasing force | 500~700 | 500~700 | 400~600 | 400~600 | 350~550 | 350~550 | 300~450 | 300~450 | 200~350 | 150~250 |
| Max. upward releasing force | 1000 | 1000 | 750 | 750 | 700 | 700 | 550 | 550 | 450 | 270 |
| Max. downward releasing force | 650 | 650 | 600 | 600 | 550 | 550 | 500 | 500 | 400 | 250 |
Full Installation Support
Local Team Support on Drilling jars
