Geothermal drilling rig
The most powerful drilling rig from KLEMM for near-surface and medium-depth geothermal energy. With 250 kW engine power, 9 separate hydraulic circuits, 220 kN pullback force, on-board mud pump and on-board loading crane it is optimally designed for cased and uncased drilling using either the deep-hole hammer or flushing drilling method.
Heat-loop bores for shallow shallow and medium-deep geothermal energy
Power, efficiently distributed
With an engine output of 250 kW, the KR 717-3GW drilling rig is specially designed for geothermal projects with greater drilling depths. The newly developed hydraulic system includes nine separate hydraulic circuits. Digitally controlled pumps are used as the main pumps (Bosch eOC technology). The proven EEP technology (EEP=Energy-Efficient Power) is also provided as standard in this rig type. The pump output automatically adapts to the respective operating or load situation (power sharing) and the engine rpm is automatically reduced to the minimum possible value. This benefits fuel consumption and noise emission.
Stronger and bigger
The newly developed drill mast has a pulling force of 220 kN. The feed system comprises a sensitive hydraulic weight-on-bit control. It is possible to drill with rod lengths of up to 6 m (e.g. 2x 3m). Additionally, the drilling rig comes with a newly developed triple clamping and breaking device (Type 10), for diameters of up to 254 mm. This includes a recovery function (400 mm stroke and max. 175 kN pulling force).
New double-head drive
The double-head design is new. It includes the new KH 47 and KH 17 rotary heads, which can be equipped with a variety of motor types. It also has a newly designed preventer, which is mounted in front of the double head unit and has a hydraulic lateral sliding sled (600 mm). A patent application has been filed for the innovative tandem slide.
Equipment for mud drilling
The drill rig can be equipped with a powerful flushing pump, which can be lowered hydraulically to the ground. To counteract the buoyancy in the borehole created through the ground water, and to facilitate the installation of the geothermal loop, there is the option to install a hoisting winch, (300 m cable capacity), and a cat head when working with weighting rods.
Safe operation
The radio remote control, used for all drilling, driving and setup functions, is designed in accordance with EN 16228, which enables ergonomic operation of the drilling rig and the best view of the drilling point. The KR 717-3GW complies with EN 16228, whereby the modes “SPM” (Special Protective Mode) used for working without a protective guard under special circumstances, and “ROM” (Restricted Operation Mode) used when manually changing the drill rods, are available.
The HBR 182 handling system has been enhanced. The new tilt function simplifies the levelling of slopes and the rig transport. The HBR 182 supports the handling of the rods whilst the hydraulic loading crane ensures the safe handling of the geothermal probe reel. Four hydraulic jacks ensure the stability of the drill rig.
Advantages
Can be adjusted to the task at hand
- Double-head drilling systems adjustable in their performance parameters and preventers
- Plastic or rubber-coated grouser plates
- Hydraulically powered water pump
- DTH-lubricator
- Multi-channel high-performance flushing equipment
- Three-part, clamping and breaking device for double-head drilling systems, diameter 152 / 89 mm with rod recovery function
- high-power flushing pump, hydraulically lowerable
- on-board loading crane
- interlocking guard, according to EN 16228
- Datalink AIR telemetry
- …
KLEMM benefits
Technical data
1st circuit | 205 l/min (load-sensing) | ||
2nd circuit | 205 l/min (load-sensing) | ||
3rd circuit | 160 l/min (load sensing) | ||
4th circuit | 160 l/min (load sensing) | ||
5th circuit | 55 l/min (adjustable) | ||
6th circuit | 35 l/min | ||
7th circuit | 35 l/min | ||
8th circuit | 35 l/min | ||
9th circuit | 35 l/min | ||
System pressure max. | 350 bar | ||
Hydraulic tank capacity | 900 l |
Chassis type | Fixed crawler tracks | ||
Width | 2,460 mm | ||
Length | 3,900 mm | ||
Tractive force max. | 203 kN | ||
Crawler speed | 1.52 km/h | ||
Chain width | 500 mm (rubber pads) | ||
Ground clearance | 320 mm | ||
Ground pressure* | 92 kN/m2 | ||
Jack-up cylinders | 4 | ||
Stroke jack-up cylinders | 500 mm | ||
Weight drilling rig | 29.0 | ||
*) Ground pressure of the machine with even weight distribution, taking the total weight into account |
Loading crane | Palfinger PK12.501SLD5B | ||
Rod manipulator | HBR 182 | hydr. swivelling and tilting | |
Hoisting winch capacity | 300 m | ||
Hoisting winch lifting force | 8,4 kN | ||
Mud pump | Caprari MEC-MR 65-2/3A | hydraulically lowerable | |
Mud pump (alternative) | Amteq Mud Max 250 | hydraulically lowerable | |
Flushing supply line | 2x 2" | integrated in energy chain | |
Flushing discharge line | 1x 4 1/2" | ||
Muffler | 1 1/2" | hydraulically controlled | |
Control valve for water | 1x 1" | hydraulically controlled | |
Control valve for compressed air | 2x 2" | hydraulically controlled | |
Compressed air lubricator volume | 8.5 l | ||
Compressed air lubricator pressure | max. 30 bar | ||
Compressed air lubricator flow | max. 35 m3 / min | ||
Pressure washer | Dynaset HPW | with hose reel |
Do you need support?
Martin Bonzel
Regional Sales
Region: North America | Canada
