Telescopic tubing sub
The telescopic tubing sub is used to compensate axial telescope caused by oil well treatment, water injection or temperature change. It uses spline latch in full stroke to make the torque transmitted at any location.
The telescopic tubing sub is used to compensate axial telescope caused by oil well treatment, water injection or temperature change. It uses spline latch in full stroke to make the torque transmitted at any location.
Technical information
1. Adjust the shear value by increasing and reducing the qty of shear pin.
2. By shearing the pin the tools can be locked at full extend, full telescopic or middle stroke location.
3. The lock key with enough length can supply the torque transmission in full stroke
Tubing nom | Max OD | Min ID | Extend length | Full telescopic length | Rated torque | |||||
in. | in. | mm | in. | mm | ft | m | in. | mm | ft -lbs | kg-m |
2-3/8 | 3.75 | 92.5 | 1.968 | 50.0 | 9 | 2.74 | 167.5 | 4255 | 2000 | 277 |
2-7/8 | 4.5 | 114.3 | 3.69 | 93.7 | 9 | 2.74 | 167.5 | 4255 | 2500 | 346 |
3-1/2 | 5 | 127 | 3.88 | 98.6 | 9 | 2.74 | 150.7 | 3828 | 3500 | 484 |
4-1/2 | 5.5 | 139.7 | 4.88 | 124 | 12 | 3.66 | 208.0 | 5283 | 5000 | 91 |
Telescope tubing sub
