AT-73PP and AT-102PP vercal tubing shock-absorbers are used to protect borehole equipment and tubing from axial loads appearing at work with TCP equipment: Scorpion and KPO guns, “Plast-S” combined effect devices, “Plast-T” borehole pressure generators. Can be used during perforaon for installaon of a submersible centrifugal pump. The vercal shock-absorber is connected with the tubing from one side and with the conveyed equipment from the other side.
The design of the shock absorbers is protected by patent No2704697 of the Russian Federation.
| Parameter | AT-73PP | AT-102PP |
|---|---|---|
| Outside diameter, mm | 73 | 112 |
| Top connecon threads | Tubing 60 | Tubing 89 or Tubing 73 |
| Inside diameter, mm | 25 | 48 |
| Total length, mm | 1226 | 1385 |
| Max stroke, mm | 200 | |
| Shearing force per one shear pin, N | 3632 | |
| Number of shear pins, pcs | 8 | |
| Max pressure difference, MPa | 60 | |
| Safety disc rupture pressure, MPa | 100 | |
| Weight, kg | 25 | 58 |
The scheme of operation of AT-PP shock absorbers
