ST-300 crawler borehole pneumatic deep borewell drilling rigs
1.Overview of ST-300 Pneumatic Drilling Rig
ST300 series deep(water) well-drilling rig uses full hydraulic control, and the Top drive to drive the rotation of drilling tools with very high drilling efficiency.
Reasonable overall layout uses the tractor-mounted or full ground chassis for transportation with good maneuverability.Very flexible in difficult roads and can be widely used in many fields such as resource exploration of hydrology wells, coalbed methane, the shallow layer of shale gas, terrestrial heat, etc, and can also be used for coal-mine gas exploitation salvage work.
The top-mounted driving head principal shaft has a great drift diameter, suitable for many kinds of construction work such as slurry drilling, air drilling, and air foam drilling, meeting the demands for well-drilling at different terrain strata.
2.ST-350S Pneumatic Drilling Rig Parameter:
| ST300 trailer mounted water well drilling rig |
| The weight | 8T |
| Drilling diameter | 105-300mm |
| Drilling depth | 300m |
| One-time advance length | 4m |
| Walking speed | 2.5km/h |
| Climbing angles | Max.30° |
| Equipped capacitor | 65-70KW |
| Using air pressure | 1.7-3.0Mpa |
| Air consumption | 17-30m³/min |
| Drill pipe diameter | φ50mmΦ76 mm φ89mm |
| Drill pipe length | 1.5m 2.0m 3.0m |
| Rig lifting force | 12T |
| Swing speed | 45-70rpm |
| Swing torque | 3500-5900N.m |
| Dimension | 4m×1.9m×2.3m |
3. Advantages of ST-300 pneumatic water well drilling rig:
Large Hole Diameter
Deep Drilling
High Penetration Rate, especially under pure rock condition
Flexible Movement
Wide Application Area
4.Application:
1. Civil engineering drilling
2. Geothermal drilling
3. Water well drilling