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Spiral Drill Collar With Elevator Groove And Slip Groove
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Spiral Drill Collar With Elevator Groove And Slip Groove
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Elevator groove and slip groove made on box thread face of slick drill collar or spiral drill collar can be used as lifting sub and safety slip when trip out. The technical parameters for elevator groove and slip groove is as per API spec7-1. Hard banding is optional at customers requests.
Technical specifications and parameters
| Drill Collar ranges O.D. (mm) |
Elevator groove depth(mm) |
Elevator groove length(mm) |
Slip groove depth(mm) |
Slip groove length(mm) |
| 101.6~117.5 |
5.6 |
406 |
4.8 |
457 |
| 120.6~142.9 |
6.4 |
406 |
4.8 |
457 |
| 146.0~168.3 |
7.9 |
406 |
6.4 |
457 |
| 171.4~219.1 |
9.5 |
406 |
6.4 |
457 |
| >=222.2 |
11.1 |
406 |
6.4 |
457 |
All technical specifications and parameters only provides for reference. |
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