What Is an NTW Core Drilling Rig? What Kind of Projects Is It Suitable For?
NTW is an internationally recognized drilling tool standard, typically corresponding to a final hole diameter of 75.7 mm and a core diameter of approximately 56 mm. This size strikes a good balance between “clear structural visibility” and “drilling deep enough.”
Typical drilling depth: Surface drilling rigs typically operate between 300–800 m, depending on the geological formation and equipment capabilities.
Common applications:
- Detailed exploration of metal deposits such as gold, copper, and iron.
- Deep sampling in engineering geology.
- Preliminary coring for geothermal and hydrological drilling.
- Control boreholes for mine slopes.
If you are dealing with complex fractured strata, hard rock, or projects with strict core recovery rates (e.g., >95%), the NTW series drilling rigs are often the primary recommendation from the project manager.
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YG Full Hydraulic Core Drilling Rig Technical Parameters
| Model | YGX-400 | YGX-600 | YGX-800 | YGX-1000 |
| Drilling Depth(M) | 180-400-500 | 200-600-650 | 400-800-1000 | 500-1000-1100 |
| Rated pressure(MPA) | 21 | 21 | 25 | 28 |
| Rated Flow(L/min) | 168 | 192 | 260 | 300 |
| Heat Dissipation Mode | Air cooling+water cooling | |||
| Engine Brand | Yuchai | Yuchai | Yuchai | Cummins |
| Rated power/speed | 78kW/ 2400r/min | 92kW/ 2400r/min | 92kW/ 2400r/min | 154kW/2400r/min |
| Drilling Angle(°) | 0-90 | 45-90 | 45-90 | 45-90 |
| Lifting Force(T) | 12 | 16 | 24 | 30 |
| Feed Force(T) | 6 | 8 | 12 | 15 |
| Hydraulic Mud pump flow | 30-90（L/min） | 30-90（L/min） | 90-180（L/min） | 90-180（L/min） |
| Hydraulic Mud pump power | 4-7(MPA) | 4-7(MPA) | 4-7(MPA) | 4-7(MPA) |
| Dimension | 4000*1900*1800mm | 4000*2000*1800mm | 5500*2100*2000mm | 6000*2200*2400mm |
| Weight | 4.3T | 4.5/5.5T | 6.5T | 7.5T |
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What Are the Benefits of Using the NTW Core Drilling Rig?
- Significantly Improved Drilling Efficiency
- Traditional mechanical drilling rigs: Drill 20-30 meters per day.
- YG fully hydraulic drilling rigs: Drill 60-80 meters per day.
- Efficiency increased by 2-3 times.
- Projects that used to take 3 months can now be completed in 1 month.
- Shorter project timelines lead to significant reductions in labor costs, equipment rental costs, and management costs.
- Significantly Improved Core Recovery Rate
- Traditional drilling rigs have unstable parameters, resulting in easily broken cores and a recovery rate of only 60-70%.
- YG fully hydraulic drilling rigs have stable parameters and smooth drilling, maintaining a core recovery rate consistently above 95%.
- High-quality core samples mean more accurate geological data.
- Providing a reliable basis for subsequent mineral development decisions.
- Significantly Improved Equipment Relocation and Assembly Efficiency
- Traditional large drilling rigs are simply inaccessible in mountainous areas, requiring manual labor and taking over ten days just for transport.
- YG modular drilling rigs, with each module weighing only 2-3 tons, can be transported by small trucks or even by horse-drawn carriages.
- On-site assembly can be completed in half a day.
- Relocation and assembly time alone can be reduced by over 80%.
- Significantly Reduced Labor Costs
- Traditional drilling rigs require 4-5 workers per shift.
- YG automated drilling rigs only require 2-3 workers per shift.
- Workers’ labor intensity is greatly reduced; they no longer need to perform heavy physical labor, mainly monitoring equipment and operating buttons.
- Based on current labor costs, this alone can save hundreds of thousands of yuan in wages annually.
- High Equipment Reliability and Low Maintenance Costs
- The hydraulic system has a simple structure, few vulnerable parts, and is easy to maintain.
- Key hydraulic components are all imported brands, resulting in a very low failure rate.
- Traditional mechanical drilling rigs suffer from wear and tear on components such as gearboxes and drive shafts, leading to high maintenance costs and significant downtime losses.
- Under normal use, YG drilling rigs require no more than 5 days of downtime per year, achieving an equipment utilization rate of over 95%.
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Where Are NTW Core Drilling Rigs Suitable for Use?
- Mineral Exploration
- Metallic mineral exploration: Gold, copper, iron, lead-zinc, etc.
- Non-metallic mineral exploration: Coal, phosphate, graphite, etc.
- NTW drilling rigs’ drilling depth of 1000-1500 meters fully meets the needs of most mineral exploration projects.
- Engineering Geological Survey
- Geological surveys are required in the early stages of large-scale engineering projects.
- Including hydropower stations, dams, highways, railways, bridges, tunnels, ports, etc.
- NTW drilling rigs can obtain accurate geological data, providing a basis for engineering design.
- Hydrogeological Survey and Water Well Drilling
- Groundwater resource investigation
- Water source well drilling
- Monitoring well construction
- A drilling depth of 1000 meters can meet the needs of most water well projects.
- Early-stage Oil and Gas Exploration
- In the early stages of oil field development, parameter wells and exploratory wells are required.
- To obtain information on underground geological structures and oil and gas shows.
- Geothermal Resource Exploration and Development
- Geothermal well construction requires core drilling to understand the distribution of underground thermal reservoirs
- NTW drilling rigs can undertake geothermal well exploration and development work.
- Geological Disaster Control Engineering
- Construction of anchor bolt holes, anchor cable holes, grouting holes, etc.
- High power and high torque characteristics provide significant advantages in complex strata.
- Scientific Drilling Projects
- Geological scientific research.
- Geophysical exploration.
- Paleoclimate research and other scientific research projects.
- NTW drilling rigs’ stable drilling performance and high core recovery rate fully meet the high standards required for scientific research projects.
- Advanced Geological Prediction for Tunnels and Underground Engineering
- During tunnel construction, advanced drilling is used to understand the geological conditions ahead.
- Providing a guarantee for construction safety.
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5 Techniques to Improve Core Recovery Rate
- Selecting the Right Drill String
- Different types of drill bits and retaining rings are used for different formations.
- Single-tube drill strings are sufficient for soft formations.
- Double-tube or even triple-tube drill strings are required for hard, fractured formations.
- Controlling Drilling Parameters
- Use low rotation speed and high drilling pressure for hard formations.
- Use high rotation speed and low drilling pressure for soft formations.
- Parameters should be stable, avoiding sudden fluctuations.
- Adjust parameters promptly when encountering fractured zones, reducing rotation speed and drilling pressure to control the advance rate.
- Flushing Fluid Performance
- Mud viscosity, specific gravity, and sand content must be controlled within appropriate ranges.
- Use anti-collapse mud for fractured formations to protect the borehole wall stability.
- Good mud performance prevents borehole wall collapse, resulting in a more intact core.
- Operating Techniques
- Do not advance too far per pass, generally controlling it to 1.5-2 meters.
- Do not immediately pull up the drill after the advance is complete; flush the hole first and then retrieve the core.
- The drill lifting process should be smooth, avoiding sudden braking and release to prevent core loss.
- Equipment Status
- Stable drilling rig performance and smooth drilling result in a high core recovery rate.
- Older equipment suffers from excessive vibration and unstable parameters, making it difficult to guarantee a high recovery rate.
- YG’s fully hydraulic drilling rig offers smooth drilling and stable parameters, providing a fundamental guarantee for a high core recovery rate.
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NTW Fully Hydraulic Core Drilling Rig Manufacturer — YG Machinery
Contact YG’s professional engineers now to receive:
- Equipment selection advice.
- Project cost analysis report.
- One-on-one technical consultation.
- Detailed ROI analysis and cost calculation.
- Real customer case studies and usage data for reference.
- Customized configuration solutions tailored to your project needs.
- Flexible payment methods and after-sales support.
- Welcome to visit our factory for on-site equipment demonstrations.
Don’t let inefficient drilling rigs impact your project schedule and profits. Choose YG’s NTW fully hydraulic core drilling rig and make your drilling operations efficient, economical, and reliable. Contact us now to begin your efficient drilling journey.
