SYSBOHR Duplex Overburden Drilling System D 88.9–323.9 mm with Rotary Head
Cased duplex drilling with a single rotary drive for casing and inner drill string. The inner string uses a rotary bit or DTH hammer to suit the formation. With an internal auger for spoil removal, casing and auger are advanced alternately.
| Technical data | |
|---|---|
| System diameter | 88.9–323.9 mm |
| Drive | Rotary head |
| Pipe/rod lengths | 500–6000 mm |
| Cuttings return | Annulus between outer casing and inner drill string |
| Threads | Right-/left-hand, tapered or parallel |
Detailed technical information can be found on the manufacturer’s product page.
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