If you are looking for drilling equipment with high efficiency, superior sample quality, and low operating costs, a reverse circulation drilling machine is undoubtedly the optimal choice. Compared with traditional core drilling, its penetration rate can be increased by 70% to 90%, with a daily drilling footage up to 110 meters. Meanwhile, cuttings samples are delivered in a fully closed pipeline without cross-contamination, delivering highly representative samples. More importantly, the RC drill rig uses compressed air as the main circulation medium, so it can work efficiently in arid regions without a water supply. Equipped with a dust collector and cyclone separator, it also enables eco-friendly construction. Thanks to these prominent advantages, it has been widely adopted in global mineral exploration, water well drilling, geothermal development, and engineering geological investigation.
Hot-Selling RC Drill Rig Parameters from YG
| YGRC-500 | |||
| Max drilling depth | 500 m | Drilling diameter | 115-305 mm |
| Air pressure | 1.05-3 Mpa | Air consumption | 16-42 m³/min |
| Drill pipe length | 3 m | Drill pipe diameter | 89/108/127 mm |
| Axial pressure | 7T | Lifting force | 15T |
| Fast lifting speed | 14.5 m/min | Fast feeding speed | 21 m/min |
| Max rotary torque | 5000-800 Nm | Max rotary speed | 0-120/0-150 r/min |
| auxiliary winch lifting force | 20T | Drilling efficiency | 10-25 m/h |
| Driving speed | 2.5 Km/h | Uphill angle | 21° |
| Weight | 11 T | Dimension | 6.8×2.1×2.8 m |
| Working condition | Loose layers and bedrock | Drilling methods | Top drive hydraulic rotation and feed, DTH hammer or mud drilling |
| power | Cummins 154 kW | Optional accessories | Reverse circulation device, mud pump, generator, foam pump |
8 Major Advantages of Reverse Circulation Drilling Machine in Mineral Exploration
- Pure and contamination-free samples: Cuttings are transported back to the ground directly through the inner tube of drill pipes without contacting the borehole wall, which effectively prevents cross-contamination of samples from different strata.
- Extremely high drilling efficiency: When driven by air medium, the daily drilling footage can reach 110 meters, 70% to 90% higher than traditional core drilling.
- Real-time continuous sampling: Operators can collect samples continuously without stopping the machine during drilling to grasp stratum conditions at any time.
- Water-free operation: The reverse circulation drilling machine adopts compressed air as the circulation medium, making it ideal for drought and water-scarce areas.
- Highly representative samples: Cuttings are marked with accurate position and depth, allowing precise location of mineralized zones.
- Significantly reduced costs: Drilling efficiency is improved 3 to 10 times, cutting overall costs by 1 to 3 times.
- Compatible with complex strata: It can reliably retrieve geological samples from loose, broken, and hard-to-sample formations.
- Eco-friendly and dust-free operation: The matched dust collector fully traps dust and avoids environmental pollution.
Function and Working Process of Cyclone Separator
The cyclone separator is a core component of reverse circulation drilling equipment. After cuttings are carried to the ground by airflow, they flow into the cyclone separator via connecting hoses. Inside the separator, high-speed rotating airflow generates centrifugal force to separate solid cuttings particles from the air stream. Separated samples fall into sample bags through the bottom outlet. These bags are labeled with collection position and depth, ready for direct delivery to laboratories for analysis. The cyclone separator not only guarantees sample purity but also eliminates environmental pollution caused by dust leakage.
How to Extend the Service Life of Drill Pipes for Reverse Circulation Drilling Rig?
RC drill pipes are core parts for reverse circulation drilling, and their maintenance directly determines drilling efficiency and operational costs. The key maintenance points are listed below:
- Regular cleaning and inspection: Thoroughly clean the inner and outer walls of drill pipes after each use, with focused inspection on thread wear.
- Proper storage: Store drill pipes on dry and flat ground to prevent moisture damage and deformation from collision.
- Thread protection: The YG reverse circulation drilling machine is fitted with compensated slide plates to automatically protect drill pipe threads and greatly prolong their service life.
- Standardized operation: Avoid overloaded drilling and strictly follow recommended operating parameters.
- Hydraulic system maintenance: Inspect hydraulic oil, pipelines, and sealing components regularly to prevent pressure loss and system breakdowns.
Other Application Fields of Reverse Circulation Drilling Machine
1. Hydrological Water Well Drilling
- Deep water supply wells for rural remote mountainous areas
- Emergency backup water source wells for cities
- Renovation and upgrading of agricultural irrigation wells
2. Geothermal Well Development
- Medium and deep geothermal heating wells
- Production wells for hot spring resorts
- Exploration and evaluation boreholes for geothermal resources
3. Engineering Geological Investigation
- Site investigation for pier foundations of river-crossing bridges
- Advance geological prediction boreholes for tunnels
- Bearing capacity inspection of foundation soil for large factory buildings
4. Pile and Foundation Construction
- Ultra-deep large-diameter piles for sea-crossing bridges
- Cast-in-place piles for urban super high-rise buildings
- Soil sampling inside steel pipe piles for offshore wind power foundations
5. Environmental Geological Survey and Geological Disaster Control
- Soil and groundwater investigation for contaminated sites
- Deep displacement monitoring boreholes for landslide masses
- Observation wells for saturation lines of tailings dam reservoirs
6. Mine Rescue and Gas Drainage Wells
- Rescue passages for mine water inrush accidents
- Surface gas drainage wells for coal mines
- Grouting boreholes for goaf filling
7. Offshore and Coastal Engineering
- Detailed geological survey before piling construction for offshore wind power projects
- Obstacle detection for subsea pipeline crossing routes
- Rock stratum detection before dredging of harbor basins and docks
FAQ about Reverse Circulation Drilling Rig
Q: What is the difference between a reverse circulation drilling machine and a wireline core drilling rig?
A: This device collects cuttings instead of intact core samples. It features faster drilling speed and more representative sampling results.
Q: What types of formations can an RC drill rig work on?
A: It fits various strata, including loose layers and bedrock. Users can adapt to different geological conditions by replacing drill bits and adjusting drilling parameters.
Q: Does the RC drill rig require large volumes of water?
A: No. It mainly runs on compressed air circulation and can operate without a water supply.
Q: What is the drilling depth range of the YG reverse circulation drilling rig?
A: YG series models cover drilling depths from 200 meters to 1200 meters to meet diverse exploration demands.
Contact YG
YG fully understands that every RC drill rig carries customers’ expectations for high efficiency and stable quality. Covering models from YGRC-400 to YGRC-1200, YG reverse circulation drilling machines support drilling depths ranging from 200 meters to 1200 meters, catering to operations in mineral exploration, water well drilling, geothermal development, engineering investigation, and other sectors. The YG RC drill rig is standard-equipped with a patented air pre-filter, which removes over 90% of dust from intake air and discharges dust automatically. The built-in compensated slide plates offer automatic protection for drill pipe threads to extend RC drill pipe service life, and wear-resistant roller slides effectively extend the overall machine lifespan. YG provides full-lifecycle services including equipment selection guidance, operational training, and after-sales maintenance. We maintain sufficient spare parts inventory and rapid response to keep your projects running continuously and efficiently. Whether you need a quotation, technical solutions, or construction suggestions, feel free to reach out to the YG team. We will deliver professional, efficient, and reliable technical support for you.
