What Exactly is an HQ Core Drilling Rig?
The HQ core drilling rig is a specialized wireline coring system designed for medium-depth exploration drilling. Industry professionals often refer to it as an “HQ wireline drill rig” or “diameter-H core barrel system.” This equipment extracts cylindrical rock samples (cores) from boreholes for geological analysis, making it indispensable for mining development, geotechnical investigations, and environmental assessments.
Physical Structure and Components:
A typical hydraulic feed mechanism-equipped HQ rig consists of several critical assemblies working in harmony:
- Mast Structure: Heavy-duty steel frame supporting drill string, typically 9-13.5 meters tall with 0-90° angle adjustment capability.
- Rotary Head: High-torque powerhead delivering 400-4200 Nm torque at variable speeds (0-1400 rpm).
- Hydraulic Feed System: Cylinder-based mechanism providing controlled thrust and lift forces (24-150 kN).
- Wireline Core Barrel: Inner tube assembly for rapid core sample retrieval without pipe removal.
- Drilling Fluid System: The mud pump circulates fluid to cool bits and transport cuttings.
- Control Panel: Centralized hydraulic controls for all drilling operations.
- Undercarriage: Crawler tracks or skid base for site mobility.
Materials and Manufacturing:
YG manufactures these rigs using high-strength alloy steels and precision-machined components. Key features include:
- Heat-treated drill rods with premium thread connections.
- Imported hydraulic seals ensure leak-free operation.
- Reinforced core barrel assembly with wear-resistant inner tubes.
- Diamond-impregnated drill bits are rated for various rock hardness levels.
YG Tip: For optimal performance in abrasive formations, pair your HQ wireline drill rods with thin-walled diamond bits featuring reinforced rib structures—these deliver 20-50% deeper drilling compared to standard designs.
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YG Fully Hydraulic Core Drilling Rig Technical Specifications – Supports HQ, NQ, PQ, NTW, SPT, etc.
| 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 Technical Features Set HQ Core Drilling Rig Apart?
Core Technical Specifications:
| Parameter | Specification | Notes |
| Core Diameter | 89-96mm (Standard 95mm) | Largest in BQ/NQ/HQ series |
| Maximum Depth | 300-800 meters | Varies by model configuration |
| Maximum Torque | 400-4200 Nm | High-torque for hard rock |
| Rotary Speed | 0-1400 rpm (variable) | Stepless adjustment |
| Lifting Force | 85-150 kN | Strong pullback capacity |
| Drilling Angle | 0-90° | Full range capability |
| Engine Power | 78-179 kW | Diesel or electric options |
Advanced Feature Highlights:
- Wireline Coring Technology: Enables core sample retrieval in seconds rather than hours by lowering the inner tube assembly through the drill pipe.
- Full Hydraulic Drive: All operations—rotation, thrust, lift, chuck, clamping—controlled via precision hydraulic system.
- Constant Pressure Drilling: Automated feed system maintains optimal bit pressure for maximum core recovery.
- Diamond Bit Compatibility: Works with various diamond drill bits for soft to ultra-hard formations.
- Multi-Gear Transmission: Provides optimal speed-torque combinations for different drilling conditions.
- Modular Design: Facilitates transport to remote sites and simplifies maintenance procedures.
- Deep Hole Capability: Specialized configurations support subsurface investigation beyond 600 meters.
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Chilean Copper Mine Detailed Exploration Project Utilizes YG Fully Hydraulic Core Drilling Rig
Client Background:
A multinational mining giant in northern Chile operates a large porphyry copper mine. They are conducting deep extension exploration to assess the ore body’s deep potential, with a designed drilling depth of 1200-1500 meters.
Pain Points and Challenges:
- High altitude operation (3800 meters), resulting in significant equipment power attenuation.
- High formation abrasiveness, with standard drill bit life limited to only 80-120 meters.
- Tight project budget, requiring control of per-meter drilling cost.
Solution:
Configure a customized YG heavy-duty HQ core drilling rig, equipped with a high-power engine and a high-altitude-specific air intake system. Utilize YG’s high-end impregnated diamond drill bits, along with specialized drilling parameter optimization services.
Implementation Results:
- Average drill bit life extended to 280 meters, a 2.3-fold improvement.
- Drilling cost per meter reduced by 28%.
- The deepest borehole reached 1,487 meters, setting a new mining record.
- Proven additional deep copper resources of 450,000 tons.
Customer Testimonials:
“YG provides not just equipment, but a complete drilling solution. From drill bit selection to parameter optimization, the deep involvement of our professional team has enabled us to achieve industry-leading deep-hole drilling efficiency.” — Dr. Carlos Rodriguez, Exploration Director
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What Benefits Does the YG HQ Core Drilling Rig Deliver to Your Business?
- Superior Core Sample Quality: The larger 95mm core diameter provides significantly more geological information per sample than NQ or BQ alternatives. This means better ore grade analysis, improved mineral resource estimation, and more accurate deposit characterization—all critical factors for mining investment decisions.
- Exceptional Hard Rock Performance: YG’s diamond core drilling rig with high-torque rotary head paired with premium wear-resistant drill bits increases exploration drilling equipment efficiency by up to 30% in challenging formations like granite and quartzite. Your crews spend less time per meter and more time making discoveries.
- Cost-Effective Operations: While the initial investment compares favorably with competitors, the real savings come from operational efficiency. The wireline coring system eliminates the need to pull entire drill strings for core sample retrieval, reducing trip time by 50-70% and significantly reducing drilling fluid consumption.
- Versatility Across Applications: The adjustable drilling angle (0-90°) and compatible drill rod sizes (BQ, NQ, HQ, PQ) mean one rig handles diverse projects—from vertical mineral exploration drilling to inclined tunnel investigation. This flexibility maximizes your equipment utilization rate.
- Reduced Maintenance Downtime: Modular construction enables rapid component replacement. The hydraulic feed mechanism uses standardized parts, and YG’s global parts network ensures minimal equipment downtime even in remote locations.
ROI Insight: Clients report average cost-per-meter reductions of 25-35% after switching to YG’s HQ wireline drill rods system, primarily due to faster drilling cycles and reduced non-productive time.
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What Does the YG HQ Core Drilling Rig Cost and Where to Buy?
Price Range Overview:
HQ core drilling rig prices typically range from $25000 to $120,000 USD per unit, influenced by:
- Depth Capacity: Standard 200/300m models start lower; heavy-duty 800m versions command premium pricing
- Power System: Diesel engine options vary by brand (Yuchai vs. Cummins) and horsepower rating
- Accessories Package: Included items like HQ wireline drill rods, core barrels, and mud pump specifications
- Undercarriage Type: Crawler tracks vs. skid mount affects base price
- Customization Level: Specialized configurations for extreme environments add cost
Why Buy Direct from YG Machinery?
As a direct manufacturer, YG offers significant advantages:
- Factory-Direct Pricing: No middleman markups, competitive rates for equivalent specifications.
- Customization Flexibility: Modify configurations to match your exact project requirements.
- Warranty Coverage: Comprehensive protection on all major components.
- Global Parts Network: Rapid replacement parts supply to 80+ countries.
- Technical Support: Remote assistance and field service options available.
Contact YG’s sales team for personalized quotes tailored to your specific drilling needs and budget constraints.
