Products > APR Drill Stem Testing Tools
Hydraulic Jar
Product Number: KW-DST-11 Hydraulic Jar is also called Big John Jar, is included as part of a tool string to help remove stuck tools
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KINGWELL Hydraulic Jar Features & Benefits:
KINGWELL Hydraulic Jar Technical Data:
KINGWELL Hydraulic Jar Drawing:
Hydraulic Jar is also called Big John Jar, is included as part of a tool string to help remove stuck tools.
The jar helps free a stuck tool or tool string by resisting a pull on the work string. When the work string is stretched by the pull, tension in the jar is released and an upward impact is delivered to the stuck tool.
KINGWELL Hydraulic Jar Technical Data:
| Specifications | 3 7/8″ | 5″ |
| Outside Diameter | 99 | 127.5 |
| Drift Diameter | 38 | 57 |
| Total Length | 1574 | 1708 |
| Amount of Stretching | 255 | 255 |
| Pulling Power | 177.9KN | 222.2KN |
| Working Pressure | 70MPa | 70MPa |
| Working Temperature | 29℃~177℃ | 29℃~177℃ |
| Resistance to Tension | 1197 | 1406 |
| Internal Pressure Strength | 135MPa | 118MPa |
| Outer Pressure Resistance | 159MPa | 77MPa |
| Torque Strength | 32KN.m | 22KN.m |
| Binding Screw Thread | 2 7/8″ CAS&2 7/8″EU | 3 7/8″ CAS& 3 1/2″IF |
KINGWELL Hydraulic Jar Drawing:
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