[info]The Woltman 90DR rotary drilling rig has an operating weight of approx. 102 t.[/info]
It is ideally suited for:
- Drilling cased boreholes ( installation of casing by rotary drive or optionally by hydraulic oscillator – both are powered by the drilling rig )
- Drilling uncased deep boreholes that are stabilised by drilling fluid
- Drilling boreholes with long hollow stem augers (CFA system), with or without kelly extensions
- Special drilling systems, such as FOW piles, double rotary head drilling (“cased CFA system”), displacement piles, soil mixing system (CSM and SMW)
Drilling processes with standard equipment
- Sheet piling up to 36m
- CFA drilling (pre-equipped with hydraulic and electric installations) up to 34m FDP Full-Displacement-Piling (pre-equipped with hydraulic and electric installations) up to 45 m
- Double rotary head drilling up to 30m