Dual Action Spring Jar
The DTI Dual Action CT Spring Jar enables repeatable upward or downward jarring blows to the work string.
The amount of tension or compression placed on the coiled tubing in order to fire the jar is dependent on the amount of preload placed into the jar springs, which is adjustable at surface.
The release loads are relatively light, typically 1500LBS – 5000LBS, depending on Jar O.D. size. Because there is no hydraulic chamber inside the Jar, it is not susceptible to high temperature, has increased impact ratio and requires very little force to re-cock.
The DTI Dual Action CT Spring Jar is simple to operate and to redress. A calibration tool is available in order to surface test the Jar release load.
- High impact ratio
- Very low re-cocking force
- Field re-dressable
- Suitable for very high temperature wells
DTI offer alternate sizes, materials and thread connections. Please contact us for more information.
Part Number | Outside Diameter | Inside Diameter | Stroke | Firing Load (LBS) |
---|---|---|---|---|
DAS212**THREAD | 2.125" | 0.25" | 4.0" | 1,000 - 2,000 |
DAS225**THREAD | 2.25" | 0.25" | 4.0" | 1,000 - 2,000 |
DAS250**THREAD | 2.50" | 0.50" | 4.5" | 1,000 - 3,500 |
DAS288**THREAD | 2.875" | 0.88" | 6.0" | 1,500 - 5,000 |
DAS312**THREAD | 3.125" | 1.06" | 6.0" | 1,500 - 5,000 |
DAS350**THREAD | 3.50" | 1.25" | 6.0" | 1,500 - 5,000 |
Dual Action Spring Jar
The DTI Dual Action CT Spring Jar enables repeatable upward or downward jarring blows to the work string.
The amount of tension or compression placed on the coiled tubing in order to fire the jar is dependent on the amount of preload placed into the jar springs, which is adjustable at surface.
The release loads are relatively light, typically 1500LBS – 5000LBS, depending on Jar O.D. size. Because there is no hydraulic chamber inside the Jar, it is not susceptible to high temperature, has increased impact ratio and requires very little force to re-cock.
The DTI Dual Action CT Spring Jar is simple to operate and to redress. A calibration tool is available in order to surface test the Jar release load.
Features and Benefits
- High impact ratio
- Very low re-cocking force
- Field re-dressable
- Suitable for very high temperature wells
Data Table
Part Number | Outside Diameter | Inside Diameter | Stroke | Firing Load (LBS) |
---|---|---|---|---|
DAS212**THREAD | 2.125" | 0.25" | 4.0" | 1,000 - 2,000 |
DAS225**THREAD | 2.25" | 0.25" | 4.0" | 1,000 - 2,000 |
DAS250**THREAD | 2.50" | 0.50" | 4.5" | 1,000 - 3,500 |
DAS288**THREAD | 2.875" | 0.88" | 6.0" | 1,500 - 5,000 |
DAS312**THREAD | 3.125" | 1.06" | 6.0" | 1,500 - 5,000 |
DAS350**THREAD | 3.50" | 1.25" | 6.0" | 1,500 - 5,000 |
Product Customisation
DTI offer alternate sizes, materials and thread connections. Please contact us for more information.